Flat and low-slope roofs manage water differently from steep asphalt shingle roofs and require compatible materials at seams, edges, walls, drains, and penetrations. CBS Roofing installs and repairs TPO roofing for eligible small-commercial, multifamily, and mixed-slope properties in Raleigh and across the Triangle, North Carolina. Our team applies more than 35 years of roofing experience to diagnosis, repair planning, and complete low-slope roof replacement.

TPO roof installation
TPO is a single-ply membrane used on suitable flat and low-slope roof areas. A complete installation includes more than the field membrane. The roof deck or substrate, insulation where included, attachment method, seams, perimeter edges, wall transitions, drains, scuppers, curbs, and penetrations all affect performance. CBS Roofing evaluates the existing assembly and prepares a project-specific proposal for compatible materials and details.
Low-slope membrane work may be part of a small commercial building, multifamily property, porch, addition, or home with multiple roof slopes. We confirm whether the building and roof section fit our service scope before recommending a system.
TPO roof repair
Leaks can develop around seams, punctures, perimeter details, wall flashing, drains, rooftop equipment, or other penetrations. Water may also travel beneath the membrane before it appears inside. Repair begins with accessible inspection and an understanding of the existing material. Compatible preparation and repair products are important. A generic patch or sealant may not provide a lasting connection to the TPO system.
- Open or questionable seams
- Punctures, cuts, or damaged membrane areas
- Leaks around vents, curbs, drains, or wall transitions
- Loose perimeter materials or storm damage
- Recurring water entry after earlier patchwork

Drainage and ponding concerns
Flat roofs are built with enough slope to direct water toward drains, scuppers, or edges, but clogged drainage, settlement, insulation conditions, or deck geometry can contribute to standing water. The presence of ponding does not identify the cause by itself. CBS Roofing evaluates visible roofing and drainage conditions and explains which corrections fall within the proposed roofing scope. Structural or plumbing concerns may require another qualified professional.
Repair or replace a flat roof?
A focused repair may be practical when damage is isolated and the existing membrane remains compatible and serviceable. Replacement may be the better long-term approach when seams and details are failing throughout the roof, moisture is widespread, the substrate has deteriorated, or earlier repairs have become frequent. We explain the known conditions, limits of access, and proposed work so the owner or association can make an informed decision.
Inspection and preventive maintenance
Periodic observation can help identify membrane damage, loose perimeter details, drainage restrictions, or vulnerable penetrations before interior leakage becomes severe. Maintenance needs depend on the roof system, building use, rooftop traffic, nearby trees, equipment, and repair history. CBS Roofing can document accessible conditions and recommend repairs that fit our roofing scope. Maintenance does not eliminate storm damage or guarantee that a concealed defect will never occur.
CBS Roofing provides flat and TPO roofing evaluations in Raleigh, Durham, Cary, Apex, Chapel Hill, Fuquay Varina, Holly Springs, Pittsboro, Sanford, Garner and surrounding Triangle communities. Contact us with the property type, roof concern, approximate age, and any available repair history.
