Durable TPO single-ply membranes, EPDM rubber roofing, and modified bitumen systems engineered to eliminate ponding water, withstand snow loads, and lower energy overhead.
Flat roofing (or low-slope roofing) is designed for commercial buildings, industrial facilities, and modern residential additions where roof pitch is minimal. Unlike pitched shingle roofs that shed water rapidly by gravity, flat roof membranes must create a seamless 100% waterproof vessel that resists standing water, heavy snow packs, thermal expansion, and intense solar UV radiation.
At Vargas & Sons Construction, we specialize in heat-welded TPO (Thermoplastic Polyolefin), EPDM rubber, and multi-ply Modified Bitumen systems. We ensure proper slope-to-drain insulation tapered board layouts to prevent water ponding across your roof deck.
Flat roof reliability relies on precise seam welding and perimeter flashing detail. Here is our 4-phase commercial installation process:
We core test existing roof insulation, remove wet substrate materials, and clean the steel, concrete, or wood deck.
High-R polyisocyanurate insulation boards are mechanically fastened or adhered with 1/4" per foot slope directed toward roof drains.
60-mil TPO membrane rolls are laid out and seams fused at 1,000°F using automatic hot-air welders for permanent structural seams.
Unreinforced TPO flashing detail is heat-welded around HVAC curb units, pipe boots, and scuppers before flood-testing drains.
Energy Star white reflective surface, heat-welded seams, chemical resistance, and 20 to 30-year manufacturer warranties.
Ultra-flexible vulcanized rubber sheet with outstanding cold-weather elasticity down to -45°F. Highly puncture resistant.
Multi-ply asphalt-based membrane reinforced with fiberglass or polyester matting. Excellent foot traffic tolerance.
Liquid-applied high-solids silicone restore existing flat roofs, sealing leaks without requiring full tear-offs.
TPO (Thermoplastic Polyolefin) seams are hot-air welded together at 1,000°F to fuse the sheets into one continuous monolithic surface. Unlike glued seams that degrade over time, welded TPO seams are stronger than the membrane itself and reflect 80%+ of solar heat.
Ponding water (water remaining 48 hours after rain) degrades roof membranes. We fix this by installing tapered polyisocyanurate insulation boards that create a subtle 1/4" per foot slope guiding water toward primary roof drains and overflow scuppers.
If building codes permit and existing insulation core testing proves moisture-free, a single recover layer (overlay with coverboard) can be installed. If moisture is trapped inside the deck, a full tear-off is mandatory to protect structural steel/wood.
We recommend bi-annual inspections (spring and autumn) to clear debris from roof drains and scuppers, inspect HVAC pipe flashings, and check perimeter metal termination bars before winter snow accumulation.
A 60-mil TPO or EPDM flat roof system professionally installed by Vargas & Sons Construction lasts 22 to 30+ years, backed by NDL (No Dollar Limit) manufacturer warranties.
Contact Vargas & Sons Construction at (531) 272-5165 for a free commercial roof inspection.
