MI Homesiding & Roofing
Knoxville, TN
LP SmartSide Siding Installation in Knoxville, TN
LP SmartSide siding installation for homeowners who want the look of wood with better durability, lower maintenance, and stronger moisture resistance in East Tennessee weather.
Free Estimate · Call Now (865) 243-1243
LP SmartSide is one of the fastest-growing siding options in Knoxville because it gives homeowners a wood-style appearance without the same level of upkeep as traditional cedar or standard wood siding. It is engineered with a treatment that runs through the product rather than sitting on the surface, which is the real difference from plain wood siding. For homeowners who want a balance between curb appeal and durability, it has become a very popular choice.
In East Tennessee, humidity and rain are constant factors, so the siding system matters just as much as the material itself. Even a strong product can fail if the wall is not prepared correctly or if flashing, spacing, and sealing are done poorly. At MI Homesiding & Roofing, we install LP SmartSide with a focus on moisture control, correct detailing, and long-term protection for the home.
Verified credentials
Who you are actually hiring, and who stands behind the work.
James Hardie™ ALLIANCE Affiliate
Fiber cement siding · Affiliate level
True Metal Supply
Metal roofing and siding supplier
BBB Accredited Business — A+ Rating
- TN #13334Licensed & Insured
Licensed Home Improvement Contractor
Tennessee license #13334 · General Liability and Workers’ Compensation insured
Knoxville Chamber Investor
Investor member of the Knoxville Chamber
LP SmartSide is an engineered wood siding made from treated wood strands and resins designed to resist moisture, impact, and pests. It is treated through its thickness to resist fungal decay and termites, while keeping a more natural wood appearance than many manufactured alternatives. For Knoxville homeowners, that makes it appealing when they want a wood look without taking on the same maintenance burden as cedar. If you want to compare it to broader engineered systems, our page on engineered wood siding gives the larger picture.
Why Homeowners Choose LP SmartSide
LP SmartSide has become popular in Knoxville because it offers stronger moisture resistance, better durability than traditional wood, and a more natural appearance than standard vinyl. It is also a good fit for homeowners who want a siding product that feels more substantial while still keeping maintenance lower than cedar. That balance between performance and appearance is what makes it stand out. If you are comparing wood-style exteriors more directly, our wood siding installation page helps show where natural wood and LP SmartSide differ.
The LP SmartSide Systems We Install
MI Homesiding & Roofing installs LP SmartSide Lap, Board & Batten/Vertical, Panel, Shake, Nickel Gap, Trim & Fascia, Soffit, Primed and ExpertFinish systems, subject to current product availability and the approved project scope.
LP makes more than one thing, and the names matter when you are reading an estimate. Here is what each one is for, in plain terms.
01
Lap
The standard horizontal board, in 6 in. and 8 in. widths and 16-foot lengths, in cedar or brushed smooth texture. The most common choice on Knoxville homes
02
Board & Batten / Vertical
The vertical look, available in 16-foot lengths. A style and a profile rather than a material: the same look exists in vinyl, steel and fiber cement
03
Panel
Sheet-style panel siding in 4-foot widths, generally cedar texture and primed for paint. Common on gables, outbuildings and accent walls
04
Shake
The shingle-style look for gables, dormers and accent areas, without the refinishing cycle of natural cedar shake
05
Nickel Gap
An 8 in. profile that LP describes as having a true 7-inch reveal. Boards stack and tap into place leaving a deliberate gap about the width of a nickel, and locking flanges hide the fasteners
06
Trim & Fascia
Corner boards, window and door trim and fascia, in 16-foot lengths, which means fewer seams on a long run
07
Soffit
Panels for the underside of the eave, available as 4x8 or 4x9 sheets or cut to 12, 16 or 24-inch widths. How the eave feeds attic intake air is on our soffit and fascia page
08
Primed or ExpertFinish
Not a profile but a finish choice, and it changes who paints the siding and what the warranty covers. Explained in its own section below
Two practical notes. The 16-foot length is a real advantage on lap, vertical, trim and fascia, but it does not apply to every LP product, so do not assume it. And LP states plainly that not all products are available in all colors, which is worth settling early if a specific color is driving the decision. What goes on your house is whatever is in the written scope, and we will tell you the product and the finish before anything is ordered.
The SmartGuard Process
This is the part that makes engineered wood behave differently from ordinary wood, and LP describes it as four things working together. We are using LP's own wording here, because the wording is careful for a reason.
Zinc borate. LP calls it a "safe, naturally-derived additive" and says engineered wood products treated with it "have been proven to effectively resist damage from termites and fungal decay for decades." Note the verb: resist. LP does not say termite-proof or rot-proof, and neither will we. One real limitation worth knowing: borate treatment addresses insects that eat wood. Carpenter ants and carpenter bees excavate it rather than eat it, so they are a different problem.
Adhesive resins. LP says "LP SmartSide products have incredible resistance to impacts from hail, thanks in part to industrial-grade adhesive resins." That is the manufacturer's adjective, not a test figure. The figure that is actually documented is the warranty hail threshold, which has its own section below.
Water-resistant waxes. LP: "Special water-resistant waxes coat each strand or fiber of wood for enhanced durability in rainy, humid environments." In East Tennessee that is the sentence that matters most, because humidity here is constant rather than seasonal.
A resin-saturated overlay. LP says it "resists excessive moisture intrusion while providing a durable base for quality paint adhesion." Again the precise wording: resists excessive moisture intrusion. That is not waterproof, and the siding is not what keeps water out of your wall — see the water-management section further down.
So the honest summary is that SmartGuard is a treatment through the product rather than a coating on it, aimed at fungal decay, termites and moisture. LP presents that resistance as product durability. It is a genuine engineering difference from plain wood, and it is not immunity.
Primed or ExpertFinish: Who Paints the Siding
This is the choice homeowners find most confusing, and it comes down to who applies the finish and what is covered afterward. Neither is universally better.
Primed. The product arrives primed and is painted in the field after installation. That means any color you want, including a custom match, and touch-ups later are ordinary painting. The responsibility shifts though: the field finish is part of the job, and LP's instructions require that every exposed cut edge be primed and painted, which is covered in the installation section below. A primed wall left unfinished is not a finished wall.
ExpertFinish. The product arrives factory-finished. LP offers 16 prefinished colors, and in 2025 added the Naturals Collection, six more colors designed to read like stained wood — Bonsai Black, Weathered Walnut, Aged Amber, Saffron Cedar, Smoky Slate and Washed White — available in cedar and brushed smooth textures. A factory finish is more consistent than field paint and removes the painting step from the project.
The warranty differs, and this is the part worth reading twice. LP documents the prefinished products as carrying a 5/15/50-year limited warranty — the 15 being coverage on the finish itself — while the primed trim and siding carry the 5/50 structure. So choosing ExpertFinish is not only a color decision; it adds a separate finish term. The warranty section below sets out what each one actually covers.
Trade-offs in one line: primed gives unlimited color and easy touch-up but puts the finish on the job; ExpertFinish gives a consistent factory coating and a finish warranty but limits you to the current palette, and LP notes that not all products come in all colors.
LP SmartSide vs Wood and Vinyl
LP SmartSide sits in the middle for many homeowners who are comparing durability, upkeep, and appearance. Cedar offers the most natural character, but it usually needs more maintenance and more careful moisture protection over time. Vinyl is often the lowest-maintenance and most affordable option, but it does not give the same wood-like look. If you are trying to compare maintenance and appearance side by side, our vinyl siding installation page is a helpful next step. For budgeting context, see our siding cost guide.
How LP SmartSide Compares With Hardie, Vinyl and Steel
No winner here. These are different materials with different trade-offs, and the right one depends on the house and on what you want from it.
Appearance. LP's cedar texture is the closest of these to real wood grain, which is usually why homeowners choose it. James Hardie fiber cement offers its own range of profiles, vinyl covers lap, board-and-batten and shake, and TruLog steel exists specifically for a log or woodgrain look in steel.
Weight and installation. LP is lighter than fiber cement and is cut with ordinary woodworking tools, which can matter on older framing and on labor. Fiber cement is heavier and generates dust that has to be controlled. Vinyl is the lightest. Each system has its own trim and transitions; the installer matters at least as much as the product.
Moisture sensitivity. This is the honest dividing line. LP is a wood-based product treated through its thickness, so it resists fungal decay and termites rather than being immune to water. Fiber cement is not a food source. Steel does not rot. Natural wood is the most sensitive of the four. For LP specifically, that is exactly why the cut-edge sealing and the flashing details below are not optional extras.
Finish and repairability. LP can be repainted like wood, which is a real advantage over a factory-coated steel panel if the color ever changes. Fiber cement can also be painted. Vinyl cannot usefully be. On repairs, a single LP plank can often be replaced, with the caveats in the repairs section.
Warranty structure. These are not comparable numbers, so treat them as structures rather than scores: LP uses a 5/50 limited warranty, and 5/15/50 on ExpertFinish. James Hardie covers its fiber cement with a 30-year limited, non-prorated warranty plus a separate 15-year ColorPlus finish warranty. TruLog's terms vary by product line and tier. Vinyl varies by manufacturer. A longer headline number is not automatically better coverage, because what is covered and how it prorates differ in every one of them.
If you are weighing engineered wood generally rather than LP specifically, our engineered wood siding page is the broader guide, and metal siding covers the steel side.
Professional LP SmartSide Installation
Even though LP SmartSide is engineered for durability, proper installation is still critical. Every project needs full wall preparation, house wrap, correct flashing at all transitions, proper spacing, clean fastening, and strong sealing around windows, doors, and trim. Without that full system, even a better material can still fail because moisture finds its way behind the siding through weak points. For homeowners considering other premium manufactured exteriors, our James Hardie fiber cement siding page shows another common alternative.
What LP's Application Instructions Require
LP's warranty is written against installation according to its Application Instructions, so these are not suggestions. We are publishing the two requirements we could verify across LP's own documents, and being explicit about what we are not publishing.
Every exposed cut edge gets sealed. LP's instructions are emphatic about this: prime and paint all exposed cut edges, seal all exposed cuts of siding and trim, and more generally all exposed wood substrate must be sealed in a manner that prevents moisture intrusion. This is the single most skipped step we find on other people's LP installations. Every board that gets cut on site — at a window, a corner, a gable rake, a butt joint — creates a raw edge, and a raw edge on a wood-based product is where the next failure starts. It is also why a repair done badly fails faster than the original wall.
Clearance at grade. LP's instructions call for a minimum of 6 in. of clearance between the siding and finished grade, and the same minimum between trim and finished grade. Mulch piled against a wall, a raised bed, or regrading after the siding went on can all quietly erase that clearance years later.
What we are not printing, and why. We could not independently verify the current figures for fastener type and placement, butt-joint gap dimensions, corner and opening details, or the clearance at the roof line. On that last one there is a specific trap: the figures that circulate differ between the United States and Canada, and publishing the Canadian number for a Knoxville house would be wrong. Those dimensions come from the current LP Application Instructions for the specific product going on your wall, and that is the document our crews work from. We are not going to borrow numbers from James Hardie's instructions or from a competitor's website to fill the gap.
LP SmartSide Is Cladding, Not the Water-Management System
This is the most useful thing on this page, and it is true of every cladding, not just LP.
Tennessee has adopted the 2018 International Residential Code, which requires not fewer than one layer of water-resistive barrier behind the exterior wall covering, integrated with flashing and continuous to the top of the wall, and requires the exterior wall envelope to prevent water from accumulating inside the assembly and to provide a means of draining water that does get in back to the exterior. The City of Knoxville enforces its own amended edition and unincorporated Knox County is a separate jurisdiction, so the detail that applies follows the code your property is under.
So what keeps the wall dry is the barrier behind the siding, the flashing at every opening and penetration, the corners and transitions, and a drainage path out. The siding sheds most of the water. It is not the system. On a wood-based product this matters more than on some others, because water that sits behind cladding has somewhere to go.
Kickout flashing deserves naming, because leaving it out is one of the most expensive mistakes on a Knoxville house. Where a roof edge runs into a sidewall, water comes down the roof-to-wall junction and needs to be diverted out into the gutter. Without a kickout, it runs behind the siding at exactly that point, and the damage shows up inside the wall long before it shows up on the surface. We look for it on every inspection.
The rest of the list is the same every time: a properly lapped and integrated barrier, flashing at heads and sills of windows and doors, flashing at penetrations, sound sheathing underneath, and details at horizontal and vertical transitions that move water outward rather than trapping it. When water has already been getting in, the project usually overlaps with siding flashing repair and water behind siding repair.
How We Handle the Transitions
MI field practice. This is how we build. It is our own practice, not a manufacturer requirement and not a code requirement.
We use caulk where a sealed finish is appropriate: at trim boards, at corners, around windows, at siding-to-soffit and siding-to-fascia transitions, and at similar trim and joint conditions. Where the detail has to manage water behind the cladding, we do not rely on caulk as the primary method. There we install flashing to direct water out of and away from the assembly.
Caulk is a finish at a joint. Flashing is how water gets handled. On a wood-based product the difference is not cosmetic, and treating the two as interchangeable is the most common reason we get called out to look at somebody else's work.
Common Problems with Poor Installation
We often repair LP SmartSide jobs that were installed incorrectly the first time. The most common problems include missing flashing, weak sealing, incorrect fastening, poor trim integration, and moisture getting behind the siding where the homeowner cannot see it right away. Those mistakes lead to water damage, shorten the life of the siding, and create bigger wall problems later. When the original install details were skipped, we often have to correct those failures through improper siding installation repair before the home can be protected correctly again.
📋 Hidden Damage Policy: If structural rot or hidden wall damage is discovered during the project, a Change Order (CO) will be issued so the home is repaired safely and correctly. Problems behind the wall are documented and addressed in writing before new siding goes on.
Built for East Tennessee Weather
Homes in Knoxville deal with high humidity, heavy rain, and seasonal expansion and contraction that put constant pressure on exterior systems. LP SmartSide can perform very well in those conditions, but only when the wall system is built with correct flashing, drainage, spacing, and clean installation details. Weak transitions around windows, trim, lower walls, and roof lines are often where moisture problems begin. If those areas are already compromised, some homes also need siding flashing repair before new siding should go on.
Hail, Impact and What LP Actually Covers
Competitors get loud here, so here is the careful version with the product performance and the warranty coverage kept apart.
What LP says about performance. LP attributes impact resistance to the industrial-grade adhesive resins in the SmartGuard process, describing "incredible resistance to impacts from hail." That is a manufacturer description, not a measured rating, and we are not going to present an adjective as a specification.
What is actually documented. LP's warranty covers damage from hail up to 1.75 inches in diameter, when the siding is properly installed and maintained. That is a warranty term with real edges to it: it is a coverage threshold, not a guarantee that a 1.75-inch stone will leave no mark, and the conditions on it — properly installed, properly maintained — are part of the term, not fine print we can skip.
Wind. We are not publishing a wind figure. LP's warranty material does not state one, and we are not going to carry a number across from another product's literature.
And the words we will not use: hail-proof, storm-proof, wind-proof. No siding is any of those. What we can tell you is what LP covers and under what conditions, which is more useful on an insurance claim than a slogan is.
Maintenance and Repainting
LP SmartSide asks less of you than cedar does. It does not ask for nothing, and we are not going to call it maintenance-free.
The useful habits are ordinary. Keep the wall clean so dirt, pollen and organic growth do not sit on it; mildew on shaded or north-facing elevations is normal in East Tennessee humidity rather than a sign of failure. Keep mulch, soil and plantings off the siding, which also protects the grade clearance LP's instructions require. Look at the finish and the sealant where it was used, at the trim and the transitions, and at anywhere a board has been cut or damaged, because on a wood-based product an unsealed edge is the thing that matters.
Repainting. A primed-and-field-painted wall will eventually need repainting like any painted exterior, and sun exposure drives that more than anything else. We are not publishing a repainting interval, because LP does not specify one and the honest answer depends on your exposure, your color and the paint that was used. When the time comes, the finish manufacturer's guidance for the paint on your wall is what governs.
Damage and touch-up. A scratch or a gouge that reaches the substrate is worth attending to rather than leaving, for the same reason cut edges get sealed. For cleaning methods, pressure-washing limits and touch-up products, we follow LP's current guidance for the specific product rather than a general rule, and we will tell you what it says for what is on your house.
Warranty: LP's and Ours, Kept Separate
Two different warranties cover two different things. Mixing them up is how homeowners end up expecting coverage nobody actually promised.
LP's product warranty. LP SmartSide Trim & Siding carries a Pro-rated 50-Year Limited Warranty and Arbitration Agreement, and it applies when the product is installed according to LP's Application Instructions. LP describes the structure as the 5/50: a five-year, 100% labor and material replacement feature, followed by a 50-year prorated material replacement feature that covers a portion of the material cost on a replacement after the first five years. LP also states that incorrect installation does not void the entire warranty, only the damage that results from the incorrect installation.
ExpertFinish adds a finish term. LP documents the prefinished products as carrying a 5/15/50-year limited warranty, the 15 being coverage on the factory finish. If you choose ExpertFinish, that is a materially different warranty from the primed 5/50, and it is worth reading the one for the product you are actually buying.
Hail. LP's warranty covers damage from hail up to 1.75 inches in diameter, when the siding is properly installed and maintained.
What we are not telling you, because LP does not publish it. The proration schedule after year five, whether the coverage transfers to a subsequent owner, the registration or notice requirements, the claim procedure, and the full exclusions list are not stated in the material we could verify. We will not assert any of them. Transferability in particular is worth settling in writing if resale matters to you, and we will request the current written warranty for your product before you commit.
A warranty term is not a lifespan. A 50-year prorated warranty does not mean the siding lasts fifty years, and it does not mean it fails at fifty-one. It is a commercial promise about materials under stated conditions. How long a wall actually lasts depends on the installation, the water management and the exposure.
Our workmanship, which is separate. General repair work carries a One (1) Year Limited Workmanship Warranty unless something different is stated in writing. Full replacement and installation work carries a Five (5) Year Limited Workmanship Warranty where the signed agreement is the full replacement or installation agreement. In both cases the term follows the signed agreement and the scope it defines. They cover our installation, not the material.
Is LP SmartSide Right for Your Home?
Before installation, we evaluate moisture exposure, roof and gutter performance, existing wall condition, ventilation, and drainage. Not every exterior is ready for new siding without preparation, especially when water has already been getting behind the wall or trim details are already failing. That evaluation helps prevent future problems and gives the homeowner a more honest recommendation before the work starts. On some homes, that also overlaps with water behind siding repair if hidden moisture is already part of the issue.
Repairs and Matching
One of LP's genuine advantages is that it behaves like wood when something needs fixing. That still comes with conditions.
Localized replacement is often possible. A damaged plank or panel can frequently be taken out and replaced without redoing a wall, which is not true of every cladding. How practical it is depends on where it sits, because lap courses overlap and reaching a board low on a wall can mean working above it.
Every cut gets resealed. This is the part that separates a repair that lasts from one that fails faster than the original. A replacement board creates new cut edges, and those edges have to be primed and painted the way LP's instructions require. A patch left raw at the cut is simply a slower leak.
Matching gets harder with age. A field-painted wall has weathered, so even the original color can read as a patch next to it. On ExpertFinish, colors and product lines get revised, and a discontinued color cannot be ordered at any price. We do not promise invisible repairs. We tell you what is actually available for your product and finish before anything is ordered, and sometimes the honest recommendation is to run new material to a natural break rather than patch a visible elevation.
For repairs across other materials see our siding repair page, and for a full re-side our siding replacement page.
Hidden Damage and Change Orders
Taking old siding off is when concealed conditions turn up: damaged sheathing, framing rot, trapped moisture, insect damage or other structural deterioration that nobody could see from the ground.
When that happens, the process is the same every time. We document it with photos. We explain what we found and why it matters, in plain language. We price the additional work. We issue a written Change Order. And we get your approval before any of that additional work proceeds.
Hidden damage is not included in the original price, and we are not going to discover it and quietly absorb it or quietly cover it. Damage we find is documented and priced in a written Change Order before new siding closes over it. On a wood-based product that matters twice over, because new LP installed over wet sheathing is a new wall with the old problem still inside it.
Why Homeowners Choose MI Homesiding
- Homeowners choose MI Homesiding because we focus on correct installation, honest planning, and long-term performance instead of shortcuts. We inspect carefully, explain what the wall system actually needs, and build the project around moisture control and clean installation details. We do not treat siding like a cosmetic cover. We treat it like part of the home’s protection system. For a broader view of the full exterior work we handle, our siding services in Knoxville page ties the whole system together.
With 500+ Siding Projects Completed and more than 20 years of hands-on exterior remodeling experience, we are a Licensed Home Improvement Contractor in Tennessee and a City of Knoxville Building Contractor, BBB Accredited with an A+ rating, carrying General Liability and Workers’ Compensation coverage. Family owned and operated, with bilingual English and Spanish service.
Get a Free LP SmartSide Estimate in Knoxville, TN
Every home is different, and proper installation is the key to getting long-term value from LP SmartSide. We inspect the home, explain what the wall system needs, and provide a clear estimate based on the actual condition of the project. Our goal is not just to improve appearance. It is to install a siding system that performs better in Knoxville’s humidity, rain, and seasonal weather. If you are also comparing budgets across replacement options, our siding replacement cost guidecan help with planning.
Call now for a free LP SmartSide estimate: (865) 243-1243
Serving Knoxville and East Tennessee
We install LP SmartSide lap, board & batten, panel, shake, Nickel Gap, trim and soffit across Knoxville and the surrounding East Tennessee communities, subject to current product availability and the approved project scope.
KnoxvilleFarragutPowellHalls CrossroadsMaryvilleAlcoaOak RidgeSeymourSeviervillePigeon ForgeGatlinburgLenoir CityLoudonRockfordClintonNewportMorristownDandridgeCorryton
Engineered wood asks for correct cut-edge treatment, clearances and fastening, and that is the same standard on every job regardless of which town it is in.
If your community is not listed, it is worth asking — we work across East Tennessee around Knoxville.
Talk with MI Homesiding & Roofing about your LP SmartSide project.
Call Now 865-243-1243Warranty, Schedule and Estimate on LP SmartSide
What LP itself warrants. LP publishes a 5/50 limited warranty on SmartSide: five years at full labor and material, then prorated substrate coverage running to fifty years. That is a warranty term, not a statement of service life, and the two are routinely confused when a product is sold as “50-year siding”.
Our workmanship warranty, in plain terms. We carry a one-year limited workmanship warranty on siding work, and five years on a full James Hardie replacement. We publish both figures rather than one blanket number, because a single figure quoted across every job is almost always the shorter one applied to the bigger job.
How long it takes. A typical full siding replacement may take about one to two weeks of working time, depending on home size, material, weather, access, hidden damage and project scope. That is an expectation rather than a guarantee, and we do not promise a fixed completion date. The schedule goes in the written proposal.
What the written estimate itemizes. Square footage by elevation, the product line and profile by name, the weather-resistive barrier, flashing at every opening and transition, trim, fasteners, caulking and finish, an allowance for sheathing repair, and removal and disposal of the existing cladding. Where two siding quotes differ sharply, the gap is nearly always in the barrier, the flashing and the sheathing allowance — the parts nobody sees once the wall is closed.
Paying for the work. Financing options may be available through a third-party financing partner, subject to approval and the provider’s terms. MI Homesiding & Roofing is not the lender, and the terms come from the provider rather than from us.
Licensed Home Improvement Contractor (TN #13334) · BBB Accredited with an A+ rating · Workers’ Compensation and General Liability carried · family owned and operated, bilingual English and Spanish · 20+ years of hands-on construction and exterior remodeling experience · Google Reviews.
FAQs
What is LP SmartSide siding?
LP SmartSide is engineered wood siding made from wood strands and fibers bound with resins and waxes and treated with zinc borate through the product, in what LP calls the SmartGuard process. LP says that treatment helps the products resist termites and fungal decay. It gives a wood-style appearance, including a cedar-grain texture, and comes in lap, vertical, panel, shake, nickel gap, trim, fascia and soffit products, either primed for field painting or factory-finished as ExpertFinish.
Is LP SmartSide real wood?
It is a wood-based product, but it is not solid lumber. It is engineered from wood strands and fibers combined with resins and waxes, then treated with zinc borate and finished with a resin-saturated overlay. So it is real wood content, engineered and treated rather than sawn from a log. That is why it takes paint like wood and can be cut with ordinary woodworking tools, and also why cut edges have to be sealed.
Does LP SmartSide rot or attract termites?
LP treats the product with zinc borate, which it describes as a safe, naturally-derived additive, and states that engineered wood products treated with it have been proven to effectively resist damage from termites and fungal decay for decades. The important word is resist. We will not tell you it is rot-proof or termite-proof. Borate treatment also addresses insects that eat wood; carpenter ants and carpenter bees excavate wood rather than eat it, so they are a separate issue.
Does LP SmartSide need to be painted?
It depends which product you buy. Primed LP SmartSide arrives primed and is painted in the field after installation, so the finish is part of the job. ExpertFinish arrives factory-finished and does not need field painting. Either way, LP's instructions require that all exposed cut edges be primed and painted, so even a prefinished wall has sealing work at every cut.
What is ExpertFinish?
ExpertFinish is LP SmartSide supplied factory-finished rather than primed. LP offers 16 prefinished colors, and in 2025 added the six-color Naturals Collection, designed to read like stained wood, in cedar and brushed smooth textures. It also changes the warranty: LP documents the prefinished products as carrying a 5/15/50-year limited warranty, the 15 being coverage on the finish. LP notes that not all products are available in all colors.
Does LP SmartSide need house wrap?
A water-resistive barrier behind the cladding is a code requirement, not an optional upgrade. Tennessee has adopted the 2018 International Residential Code, which requires not fewer than one layer of water-resistive barrier behind the exterior wall covering, integrated with flashing, and requires the wall to drain water that gets in back to the exterior. No siding is the water-management system, and on a wood-based product the barrier, the flashing and the drainage path matter more rather than less.
Does LP SmartSide work well in Knoxville weather?
Yes, when the wall is detailed correctly. LP says its water-resistant waxes coat each strand or fiber of wood for enhanced durability in rainy, humid environments, which is the relevant claim for East Tennessee, where humidity is constant rather than seasonal. What decides the outcome is the assembly: the water-resistive barrier, flashing at openings and roof-to-wall junctions including kickout flashing, the grade clearance, and sealed cut edges.
Does LP SmartSide require maintenance?
Yes, less than cedar but not none, and we will not call it maintenance-free. Keep the wall clean, keep mulch and plantings off it so the grade clearance LP requires is not buried, and look at the finish, the sealant, the trim and any cut or damaged area. A primed-and-painted wall will eventually need repainting. We do not publish a repainting interval, because LP does not specify one and it depends on your exposure, color and paint.
What is the LP SmartSide warranty?
LP SmartSide Trim & Siding carries a Pro-rated 50-Year Limited Warranty and Arbitration Agreement, which applies when the product is installed according to LP's Application Instructions. LP describes the structure as the 5/50: a five-year, 100% labor and material replacement feature, then a 50-year prorated material replacement feature covering a portion of the material cost after the first five years. ExpertFinish products are documented as carrying a 5/15/50-year limited warranty. The proration schedule, transferability, registration and claim rules are not published in the material we could verify, so we get the current written warranty for your product rather than asserting them.
Does LP cover hail damage?
LP's warranty covers damage from hail up to 1.75 inches in diameter, when the siding is properly installed and maintained. That is a coverage threshold rather than a promise that a stone that size leaves no mark, and the conditions attached to it are part of the term. LP separately describes the product as having strong impact resistance thanks to its industrial-grade adhesive resins, but that is a description, not a measured rating. We do not use the words hail-proof or storm-proof.
Can damaged LP SmartSide be repaired?
Often yes, and more easily than some claddings, because a damaged plank or panel can frequently be replaced without redoing the wall. Two caveats. Every new cut has to be primed and painted the way LP requires, or the repair fails faster than the original. And matching gets harder with age: a weathered painted wall can make even the correct color read as a patch, and discontinued ExpertFinish colors cannot be ordered. We do not promise invisible repairs.
Do you install LP SmartSide siding?
Yes. MI Homesiding & Roofing installs LP SmartSide Lap, Board & Batten/Vertical, Panel, Shake, Nickel Gap, Trim & Fascia, Soffit, Primed and ExpertFinish systems, subject to current product availability and the approved project scope, across Knoxville and the surrounding East Tennessee communities.
Is LP SmartSide better than James Hardie?
Neither is universally better; they are different materials. LP is lighter, cut with ordinary woodworking tools, repaintable, and wood-based, so it resists fungal decay and termites through its treatment rather than being immune to moisture. Hardie fiber cement is heavier, is not a food source for insects or decay, and carries a 30-year limited non-prorated warranty with a separate 15-year ColorPlus finish warranty against LP's 5/50 and 5/15/50 structures. Which fits depends on the house, the look you want and the budget, and we will give you a straight recommendation after seeing the wall.
Ready to Get Started?
If you want the look of wood with better durability and lower upkeep, LP SmartSide may be the right fit for your home. MI Homesiding & Roofing helps Knoxville homeowners with clean installation, better moisture control, and siding systems built for East Tennessee weather.
Licensed Home Improvement Contractor · Insured · Family Owned & Operated
Bilingual Service · Google Reviews · Serving Knoxville & East Tennessee
(865) 243-1243
contact@mihomesidingllc.com
Knoxville, TN
