Steel is our tradeMetal building roofing · San Antonio, TX
Repairs, insulation upgrades, coatings and retrofits for pre-engineered metal buildings: shops, warehouses, churches, gyms and storage across the region.
The short answer
CRSA is a San Antonio commercial roofing contractor for pre-engineered metal buildings. We replace fasteners and sealants, fix condensation and insulation, coat aging steel and install metal-over-metal retrofits on shops, warehouses, churches, gyms and storage buildings across Bexar and surrounding counties, with a live 24/7 leak line.
Metal buildings we roof (building types)
Most metal roofs do not wear out. Their screws, washers, laps and insulation do. These habits fix the real problem.
Most leaks are worn washers and backed-out screws. We replace them on the right pattern before anything else.
We tell leaks from condensation, then fix the vapor barrier and insulation that cause the drip.
Fastener and clip patterns sized to the building’s wind exposure, not guessed.
Reflective coatings and added insulation lower heat inside uninsulated steel buildings.
Repair, coat or retrofit priced side by side, with photos of every problem.
Metal shavings swept daily so they cannot rust-stain new panels.
From one leaking skylight panel to a full metal-over-metal retrofit.
Fasteners, washers, laps, ridge caps, gutters and skylight panels fixed for good.
Every exposed screw replaced with oversized long-life fasteners on the right pattern.
Liner systems, faced blanket and vapor barriers that stop drips inside.
Rust treated, seams sealed and the whole roof coated in silicone or acrylic.
New panels on sub-framing over the old roof, with insulation in the gap.
Polycarbonate skylight panels, box gutters and downspouts replaced.
Pick a system to see how it is built and what it fixes on a steel building.
Our usual fix for sound steel roofs
Commercial metal roofing details
Why it fits: New long-life fasteners and sealants on the existing panels stop most leaks for a fraction of replacement.
Watch out: Does not fix condensation or rust-through; pair with insulation or coating where needed.
Seals every screw and lap at once
Why it fits: One seamless coating over seams and fasteners, plus a cooler, reflective surface.
Watch out: Needs rust treatment and a sound panel; rust-through areas get patched or replaced first.
For rusted or leaking-everywhere roofs
Metal retrofit roofing details
Why it fits: A new roof without tear-off, with room for real insulation that ends condensation.
Watch out: Needs a structural check and planning around skylights and vents.
Insulates and seals in one pass
Why it fits: Spray foam covers every fastener and adds R-value, which cuts both leaks and condensation.
Watch out: Needs low wind and good overspray control; recoat every 10 to 15 years.
For new buildings and long holds
Standing-seam metal roofing details
Why it fits: Concealed fasteners and clips that let long panels move with the heat.
Watch out: Higher upfront cost; on old buildings usually installed as a retrofit.
Every metal building project follows the same six steps.
We walk every panel run, check washers, laps, ridge caps, gutters and skylights.
We check the vapor barrier and insulation from inside and tell you which problem you have.
Fastener restoration, coating, foam or retrofit priced side by side.
Rust treated, panels cleaned, interiors protected from drips and debris.
Fasteners, clips or sub-framing set to the building’s wind exposure.
Every shaving swept, every lap checked, photos and warranty delivered.
A typical day on a metal roof
Planned aroundthe heat
Six spots cause most metal building leaks and complaints. Each gets checked and photographed.
Check 01
Backed-out screws, cracked washers and rust at the head.
Photographed in your reportCheck 02
Open laps, failed sealant and capillary leaks.
Photographed in your reportCheck 03
Loose ridge caps, rake trim and closures.
Photographed in your reportCheck 04
Cracked or brittle polycarbonate and loose fasteners.
Photographed in your reportCheck 05
Rusted box gutters and overflow into walls.
Photographed in your reportCheck 06
Torn facing and condensation drips inside.
Photographed in your reportSample 2026 ranges for the San Antonio area. Most metal buildings never need a full replacement; the options below are why.
Metal building line items we show separately
Fastener restoration fixes most leaks for a fraction of any other option.
If it drips on cool mornings, the fix is insulation and a vapor barrier, not sealant.
On rusted roofs, a retrofit keeps the building closed and adds insulation.
If it only drips on cool mornings, it is not a leak. It is condensation, and caulk will never fix it.
Drive times are from downtown San Antonio. Shops and steel buildings across the metro and Hill Country are on our routes.
Pick an areaDrive times from downtown San Antonio.
Owners of steel buildings ask us these most. Something else? Call a project manager.
Usually worn washers, backed-out screws, open laps or failed ridge and gutter details. The panels themselves rarely fail first.
If it drips on cool, humid mornings without rain, it is usually condensation. Insulation and a proper vapor barrier fix it.
Most repair visits cost $450 to $3,500. Replacing every fastener runs about $1.50 to $3 per square foot, and a coating about $3 to $6.
Yes. Liner systems, faced blanket, spray foam or a retrofit with insulation in the new cavity.
New panels installed on sub-framing over the old roof. No tear-off, the building stays closed and you gain space for insulation.
The steel lasts 40 years or more; fasteners and sealants need attention every 10 to 15 years.
Yes, on sound panels. Rust is treated, fasteners and laps sealed, then the roof is coated.
Yes. We replace brittle polycarbonate panels and fasten them to the right pattern.
Tell us about the building. A project manager calls back within 2 business hours, or right away for an active leak.
Something went wrong. Please call (210) 384-6843 or try again.
A project manager will call you within 2 business hours. Need us sooner? (210) 384-6843
Written by the crews who do this work. All articles
