Every roof system is a bet on how a particular building class will age, and in San Marcos, TX the weather gives that bet two hard inputs: hail that can bruise a membrane in minutes, and a long summer that cooks the surface for months. A wide, low-slope distribution roof, a ribbed metal canopy and a flat roof over a retail suite do not reward the same choice, so the useful starting point is the building and its remaining service, not a favorite material.
Large warehouse and retail roofs are most often single-ply territory. TPO and PVC are heat-welded sheets that reflect sun and can be repaired by welding new material to old; PVC earns its keep where grease, chemicals or food exhaust are present. EPDM is a cured rubber sheet with a long record on simple roofs, and KEE blends a plasticizer-resistant polymer into a PVC-style sheet for harsher exposures.
Where foot traffic, rooftop equipment or a thicker hail buffer matters, layered assemblies make sense. Modified bitumen and built-up roofing put several plies and a surfacing over the deck, which gives mechanical rooms and older campus buildings extra body at the cost of heavier tear-off when the day comes.
TPO roofing in San Marcos, TX: heat-welded white membranes for warehouses, retail and campus buildings, with seam, hail and heat checks by budget year.
PVC roofing in San Marcos, TX: welded membranes for restaurants, outlet retail and food-handling buildings, with grease, seam and hail checks by budget year.
EPDM rubber roofing in San Marcos, TX: adhered and ballasted membranes for older commercial and campus buildings, with lap, hail and heat checks by budget year.
KEE membrane roofing in San Marcos, TX: PVC-alloy sheets for harsh exposures, with weld, flexibility and hail checks that fit your budget year.
Modified bitumen roofing in San Marcos, TX: SBS and APP cap sheets for schools, hospitals and downtown buildings, with lap, granule and hail checks.
Built-up roofing in San Marcos, TX: multi-ply BUR on campus, downtown and older commercial buildings, with gravel, blister and flashing checks by budget year.
Standing seam metal roofing in San Marcos, TX: concealed-clip panels for Hill Country commercial, event and institutional buildings, with hail and wind checks.
Metal roof retrofit and restoration in San Marcos, TX: re-fastening, sealing, coating or recovering exposed-fastener panels on warehouses and plants.
Spray polyurethane foam roofing in San Marcos, TX: sprayed insulation and coating for irregular, cold-storage and retrofit roofs, with hail and recoat planning.
Silicone roof coatings in San Marcos, TX: liquid-applied restoration for sound, dry roofs that hold water, with adhesion and recoat planning by budget year.
Acrylic roof coatings in San Marcos, TX: reflective, water-based restoration for well-drained commercial roofs, with cure and recoat planning by budget year.
Steep or long-span buildings often suit standing seam metal, with concealed fasteners and panels that move with temperature. An aging corrugated or exposed-fastener roof can sometimes take a metal retrofit over the existing deck, which keeps tenants working while the new surface goes on.
When the deck and insulation are dry, spray foam adds insulation and a continuous surface, and silicone or acrylic coatings can renew a weathered membrane and cut surface heat. Austin's Camp Mabry station, the nearest long-running NWS record, shows August normal highs near 98 F, which is why reflectivity matters to a facility director budgeting for cooling.
Hail as large as six inches fell at Johnson City on May 9, 2024, with the storm bound for San Marcos. Thicker membranes, cover boards and firmer substrates resist impact better, and an assessment of hail damage on an existing roof often shapes which new system a facility director chooses. Fulfillment buildings near Fortuna Road and Yarrington Road face the same sky as courthouse-square buildings, but their field size changes the cost of every option.
Impact resistance comes from the whole assembly, not the top sheet alone. A thicker membrane over a cover board and firm insulation tolerates strikes better than a thin sheet over soft board, and we compare those builds against what the building can carry.
Often yes, if the existing layers are dry and fastened. Moisture readings come first, since wet insulation trapped under a new sheet shortens its life.
With summers like the ones recorded at Camp Mabry, a reflective surface lowers roof temperature and reduces thermal stress on seams and flashings. Cooling-load savings vary by building, so we weigh them against the rest of the scope.
Group the roofs by slope, age and exposure, then pick a short list of systems so repairs stay simple for the maintenance crew. Texas State alone has roughly 250 buildings, which shows how quickly mixed systems pile up without a plan.
Send the building list with roof ages and any hail history, and we will recommend a system for each roof along with a replacement order.