Flat and Low-Slope Roofing in Lehi, Utah

A shingle roof uses slope and overlapping rows to move water downhill. A flat or low-slope roof in Lehi relies on a waterproof membrane and carefully built seams instead. That makes drainage, penetrations, edges, and substrate condition especially important.

Median year built from the US Census American Community Survey; elevation from USGS.

A flat roof in Lehi needs attention when water remains in the same low areas long after a storm, seams begin to open, the membrane develops blisters or soft spots, or interior staining appears below the roof. Ponding water is especially important because standing water keeps pressure on seams and penetrations for longer periods.

Moisture below a low-slope roof matters as much as the membrane above it. We look for signs of trapped moisture in insulation or the substrate because covering wet materials with a new membrane can leave the underlying problem in place.

Winter drainage is important on Lehi flat roofs. Snow can melt during warmer periods and refreeze near drains or edges. We pay attention to where water moves, where ice may restrict drainage, and whether low areas are likely to hold moisture for long periods.

Wind exposure still matters on a flat roof in Lehi. Membranes, edge metal, corners, parapets, and rooftop equipment all need secure attachment because uplift forces are often strongest around the roof perimeter and corners.

A Lehi low-slope roof can use several membrane systems. TPO uses thermoplastic sheets with heat-welded seams. EPDM uses a rubber membrane with compatible seam and flashing details. Modified bitumen uses reinforced asphalt-based sheets. Each system handles details and repairs differently, so the existing roof and drainage layout matter when choosing between them.

• TPO single-ply membrane: TPO is a thermoplastic roofing membrane. Seams are joined with heat-welding equipment so separate sheets become part of one continuous roof surface.
• EPDM rubber membrane: EPDM is a flexible synthetic rubber membrane. Seams and roof details use compatible adhesives, tapes, or flashing products designed for the system.
• Modified bitumen: Modified bitumen is an asphalt-based low-slope membrane reinforced for roofing use. It can be practical on smaller flat sections, porches, garages, and similar areas.
• Existing membrane repairs: We can inspect existing flat-roof membranes for open seams, damaged flashing, punctures, failed details, and drainage problems before recommending repair or replacement.

A low-slope roofing project in Lehi starts with understanding how the roof handles water. We inspect drainage, membrane condition, substrate, seams, edges, and penetrations before deciding what work is appropriate.

• Install the membrane: The membrane is laid out and attached according to the selected system. TPO seams are heat welded, while EPDM and modified-bitumen systems use their approved joining methods.
• Detail drains and penetrations: Drains, vents, pipes, skylight curbs, walls, and rooftop equipment receive membrane flashing designed for the selected roofing system.
• Prepare the roof surface: The membrane needs a clean, stable surface. Preparation depends on whether the project involves tear-off, recovery, insulation replacement, or work over an existing approved substrate.
• Assess drainage first: We identify where water currently flows, where it stands, and whether drains, scuppers, gutters, or roof edges are handling runoff correctly.
• Test and inspect seams: We inspect completed seams and details before the roof is considered finished. On applicable systems, seams can be probed or otherwise checked for continuity.
• Check the substrate and insulation: We look for soft areas, trapped moisture, damaged insulation, or substrate problems that should not be covered by a new membrane.

Which of those apply depends on what the inspection finds. We would rather tell you the roof needs a repair than sell you a replacement it does not need yet.

For the full picture of the service, see Flat Roofing.

Flat roofing in Lehi follows a different sequence from shingle work because drainage and membrane continuity have to be addressed before the roof is considered watertight.

1. Find the drainage problem firstBefore changing the membrane, we determine whether the roof is holding water because of clogged drainage, poor slope, settled insulation, or another condition.
2. Open up suspect areas when neededIf trapped moisture is suspected, the roof assembly may need targeted investigation before a new membrane is installed.
3. Build a sound substrateWet or damaged materials are addressed as part of the approved scope so the new roof is not installed over a failing base.
4. Install and join the membraneSeams are welded, taped, adhered, or otherwise completed according to the selected roofing system.
5. Finish every transitionEdges, walls, curbs, drains, vents, and other interruptions are completed before the roof is signed off.

Courtland Roofing handles both pitched and low-slope roofing in Lehi. Flat work requires different materials and detailing from shingles, so we evaluate the roof pitch and drainage before deciding which system belongs on the roof.

Certified installer for GAF, CertainTeed and Owens Corning, family-owned, licensed & insured.

Courtland Roofing has worked on flat roofs in every part of Lehi, Utah (84043 and 84003), including the streets around Thanksgiving Point. We give homeowners across the rest of Utah County the same service, including in Spanish Fork, Springville and American Fork.

If you do not see your ZIP code listed, call or text us. We can confirm whether we provide flat and low-slope roofing at your address in Lehi.