Commercial Roofing in San Rafael, California

The offices and the retail buildings across San Rafael need roofs built for the North Bay climate. The TPO and the EPDM membranes handle the fog and the rain. Commercial roofing in San Rafael serves the Marin County business community.

Signs Your San Rafael Commercial Roof Needs Service

• The ponding water on the flat roof — the water is pooling and the membrane is degrading
• The bubbles or the blisters in the membrane — the trapped moisture is damaging the roof
• The algae or the moss on the membrane — the damp is feeding the growth
• The leaks in the office or the retail space — the water is finding the gaps in the seams
• The energy bill is high in the summer — the dark roof is absorbing the heat

Why San Rafael Commercial Roofs Need the Right System

The North Bay climate is the main factor. The fog and the rain keep the roof wet and the membrane degrades. The TPO and the white EPDM reflect the sun and handle the moisture.

The flat roof is the standard for the commercial buildings. The low slope needs the membrane system that handles the ponding water and the damp.

How We Install Commercial Roofs in San Rafael

1. Inspect the roof deck — check the condition and the slope of the deck
2. Prepare the surface — clean and prime the deck for the membrane adhesion
3. Install the insulation — the polyiso insulation board improves the energy efficiency
4. Install the membrane — the TPO or the EPDM membrane is heat-welded or adhered
5. Install the flashing — the corrosion-resistant edge metal, pipe boots, and wall flashing
6. Test the system — the flood test or the leak test confirms the integrity

Commercial Roofing Costs in San Rafael

Service	Typical range	What’s included	Warranty
TPO roof installation	$5,500 – $16,500	60-mil membrane, insulation, flashing	20 years
EPDM roof installation	$5,500 – $13,000	60-mil membrane, insulation, flashing	20 years
Commercial roof repair	$1,100 – $5,500	Patch the leak, seal the seam	5 years
Commercial roof coating	$3,300 – $8,800	Clean and coat the existing roof	10 years

Preventing Roof Problems in San Rafael

• Inspect the roof after the winter rain — the leaks show up during the wet season
• Check for the ponding water — the standing water degrades the membrane
• Check the flashing and the seals — the edge metal and the pipe boots are the common leak points
• Use the corrosion-resistant flashing — the salt air eats the standard metal

Expert tip: in San Rafael, the commercial roof should use the corrosion-resistant flashing. The salt air eats the standard metal edge, and the coated flashing lasts years longer. The white TPO keeps the building cool.

Serving San Rafael and Nearby Areas

We install commercial roofs across Marin County — San Rafael, Novato, Larkspur, San Anselmo, Mill Valley, and the surrounding communities.

FAQ

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Start with a free commercial roof inspection and estimate. Call us today for local crews.