MI Homesiding & Roofing
⭐⭐⭐⭐⭐ 5-Star Rated on Google
Flat Roof Contractor in Knoxville TN
TPO, EPDM & Modified Bitumen Roof Repair and Replacement
Searching for specialized flat roofing companies? At MI Homesiding & Roofing, we are local experts in rubber roofing (EPDM) and TPO systems. Whether you need a full flat roof replacement or a complex repair, our team provides the precision a low-slope roof depends on to stay watertight.
A flat roof requires precision. One small mistake in the seams or drainage can lead to thousands of dollars in structural damage.
Our team personally analyzes every project plan to provide an exact material takeoff, ensuring your TPO, EPDM, or Modified Bitumen system is installed to the highest industry standards.
⭐⭐⭐⭐⭐ 5-Star Rated on Google
As a GAF Certified Residential Roofing Contractor, we can offer GAF’s System Plus Limited Warranty on qualifying roofing systems, subject to GAF eligibility, terms, and conditions.
Verified credentials
Who you are actually hiring, and who stands behind the work.
GAF Certified™ Residential Roofing Contractor
GAF ID 1158190 · Verify on GAF
Authorized to offer the GAF System Plus Limited Warranty on qualifying GAF roofing systems
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
Flat Roofing Options for Knoxville Property Owners
We install the most reliable systems available at ABC Supply and Lansing:
TPO (Thermoplastic Polyolefin): The #1 choice for energy efficiency. This white, reflective membrane keeps your building cool during Knoxville’s humid summers and is highly resistant to tears and punctures.
EPDM (Rubber Roofing): Extremely durable and flexible. A time-tested rubber material that handles extreme cold and heat without cracking.
Modified Bitumen: A multi-layered asphalt-based system. We often recommend this for residential flat porches and balconies because of its superior waterproofing and foot-traffic resistance.
Flat Roof Cost in Knoxville
Final pricing depends on square footage, drainage complexity, and current roof condition. Get a free estimate for your specific project.
| System | Typical Range |
|---|---|
| TPO Roofing | $7,000 – $14,000 |
| EPDM Rubber Roofing | $6,500 – $13,000 |
| Modified Bitumen | $8,000 – $15,000 |
| Technical Assessment | $350 (credited to project) |
The MI Homesiding & Roofing Approach: No More Standing Water
The biggest enemy of a flat roof is ponding water. Our process focuses on the long-term health of your structure.
Proper Slope & Drainage: Correct pitch moves water toward gutters and drains.
Heat-Welded Seams: For TPO systems, professional heat-welding creates one continuous waterproof sheet.
Owner-Led Inspection: We check every flashing point, curb, and scupper — where most flat roof leaks start.
If your flat roof has ponding water, it's usually a design flaw, not just wear. We fix the root cause so your investment lasts 20+ years.
Hidden Damage Policy
📋 If we discover rotted decking, damaged sheathing, or hidden structural issues during a flat roof project, we stop and document it with photos. We explain what we found and provide a written Change Order before continuing. A new flat roof system goes on after the damage underneath has been documented and addressed in writing.
$350 Technical Assessment for Complex Projects
For flat roofs with suspected structural damage, drainage issues, or multiple problem areas, we offer a $350 Technical Assessment. If you move forward with the project, that amount is credited back in full.
If active leaks have already caused interior damage, that may also overlap with water behind siding repair depending on how far moisture has spread.
Serving Both Residential & Commercial Needs
Whether you have a modern flat-roof home in Hardin Valley, a storefront in Downtown Knoxville, or an industrial space in Middlebrook, we are your local experts for flat roof repair and full replacement.
For steep-slope alternatives, see our asphalt shingle roofing and metal roofing pages.
Flat Roof Permits, Schedule and Warranty
Low-slope work is where the permit question actually bites, because the thresholds are written around building size rather than roof type.
Permits. The City of Knoxville requires a qualified registrant for reroofs of buildings of 5,000 square feet or more, or more than two stories — which catches a good share of the commercial low-slope work in the city. Its roofing exemption covers only laying a second layer of shingles over an intact first layer, which does not apply to a membrane system at all. Outside the city and Farragut, permits run through Knox County Codes Administration. We confirm the requirement for the specific building.
How long it takes. Most of our roofing projects run approximately one to two working days. That is the typical range, not a promise about your roof: size and pitch, how the property is accessed, how many tear-off layers come off, the roofing material, the condition of the decking once it is open, whether ventilation work is included, the weather window and anything hidden we find can all move it. The schedule goes in the written proposal, and we tell you the same day if something we find changes it.
Warranty. On a membrane roof the manufacturer’s coverage belongs to the membrane system and depends on it being installed to that manufacturer’s specification. Our workmanship warranty runs one year on a repair and five years on a replacement.
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 rates and terms come from the provider rather than from us.
Licensed Home Improvement Contractor (TN #13334) · BBB Accredited with an A+ rating · GAF Certified Residential Roofing Contractor · Workers’ Compensation and General Liability carried · Family owned and operated, bilingual English and Spanish · 20+ years of hands-on construction and exterior remodeling experience · rated 5.0 from 61 Google reviews.
Serving Knoxville and Surrounding East Tennessee
We install and repair flat and low-slope roof systems across Knoxville and the surrounding East Tennessee communities, including Farragut, Maryville, Alcoa, Oak Ridge, Powell, Halls, Clinton, Lenoir City, Seymour and Corryton.
Frequently Asked Questions about Flat Roofing
How much does a flat roof replacement cost in Knoxville?
Flat roof replacement typically ranges from $6,500 to $15,000 depending on the system (TPO, EPDM, or Modified Bitumen), square footage, and drainage complexity.
Is TPO better than EPDM for my property?
TPO offers better energy efficiency with its reflective white membrane, while EPDM offers strong flexibility and a long track record in extreme temperatures. The right choice depends on your building's exposure and goals.
Do you offer commercial flat roof repair near me?
Yes. We provide both residential and commercial flat roof repair and replacement across Knoxville and surrounding East Tennessee.
Why do most flat roofs leak?
Most flat roof leaks come from ponding water, failed seams, or poor flashing at curbs and penetrations — not simply age. Proper slope and drainage prevent most of these issues.
How do I know if my flat roof has "ponding water" issues?
Standing water that remains on the roof more than 48 hours after rain is a sign of ponding. This usually points to a slope or drainage design flaw, not just normal wear.
Do you provide estimates for commercial flat roofs?
Yes. We provide free on-site estimates for standard flat roof projects, and a $350 Technical Assessment for complex commercial inspections, credited back if you move forward.
RESIDENTIAL LOW-SLOPE
Low-Slope Roofing on a House, Not Just a Flat Building
Low-slope areas turn up on plenty of ordinary houses: a porch, a room addition, a terrace-style section over part of the living space, a carport, or another small section of roof that does not shed water the way a steep plane does.
What belongs on those sections depends on the section. Slope, roof geometry, how water leaves the area and the manufacturer’s requirements for the product all bear on the decision. Some shingle systems can be used at certain lower slopes when the manufacturer’s requirements are followed. Other sections are better served by a single-ply membrane.
TPO and EPDM are membrane systems we install where they are appropriate for the section in question.
Wherever a porch or an addition meets the main roof or a wall, that transition is where low-slope work tends to fail. The flashing at that junction and the drainage off the section are the details that decide whether it holds.
Ready to Get Started?
Stop the leaks before they spread. Get a professional, itemized estimate for your flat roof from a family-owned contractor you can trust.
Licensed Home Improvement Contractor · BBB Accredited · Insured · Family Owned & Operated · 5-Star Rated on Google · Serving Knoxville & East Tennessee
