Industrial and light-manufacturing facilities with chemical or oil exposure
Buildings near the Houston Ship Channel petrochemical belt with airborne contaminants Any roof where heat-welded seams and chemical resistance both matter
Re-cover and tear-off projects on aging built-up or modified bitumen...
Schedule a roof reviewSure-Seal EPDM for Long-Run Durability


EPDM is a synthetic rubber membrane, and Carlisle's Sure-Seal line has one of the longest field histories of any single-ply product. It handles ozone, UV, and temperature swings well, and the sheets come in large widths that mean fewer seams across a big roof. On Houston buildings, we tend to reach for EPDM where the building owner wants a proven, lower-maintenance membrane and the cooling penalty of a dark roof can be managed through insulation or a reflective coating later.
EPDM is also forgiving on roofs with a lot of penetrations and irregular layouts. The flashing details adapt well around the pipes, curbs, and equipment stands that crowd a typical commercial roof, and the cured membrane stays flexible across the temperature range we see between a January cold snap and an August afternoon. We install it in fully adhered, mechanically attached, and ballasted configurations depending on the deck and the wind exposure.

Some Houston buildings put a roof in contact with things that destroy ordinary membranes. Restaurant exhaust dumps grease onto the roof around the kitchen. Industrial and processing facilities along and near the Ship Channel vent chemical fumes and oils. For those buildings we install Carlisle Sure-Flex PVC, which resists grease, animal fats, and many chemicals that would degrade TPO or EPDM over time.
PVC shares the heat-welded seam strength of TPO and comes in reflective white as well, so it carries the same summer cooling benefit while standing up to harsher rooftop conditions. We use it on food-service buildings, on facilities with greasy or chemical exhaust, and on roofs where the owner wants the longest-lasting hot-air-welded option available.
Where PVC Fits
Roof planning notes
Buildings near the Houston Ship Channel petrochemical belt with airborne contaminants Any roof where heat-welded seams and chemical resistance both matter
The membrane is the part people talk about, but on the Gulf Coast the attachment and the edge are what decide whether a roof survives a storm. Wind gets under a roof at the perimeter and corners first, and a failed edge can peel a field that was otherwise sound. We build Carlisle assemblies with the manufacturer's edge metal, termination details, and enhanced fastening patterns at the perimeter and corner zones, because that is where uplift forces concentrate when a coastal storm system moves through Harris County. Talk with a Houston commercial roofing team