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Eichler roof replacement in the South Bay: foam, TPO or built-up?

Short answerThe usual choices for a South Bay Eichler are spray polyurethane foam with a coating, a single-ply membrane such as TPO, or modified bitumen. Each needs proper drainage and edge details, and adding insulation above the deck is common. Costs vary with size and repairs; get a free written estimate.

Every roofer we work with is licensed, insured and highly reviewed by Bay Area homeowners.

Updated · Sources reviewed November 12, 2026 · By South Bay Roof Replacement

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Why are Eichler roofs different?

The mid-century Eichler tracts in Palo Alto, Sunnyvale, Mountain View, Cupertino and San Jose's Willow Glen area were built with nearly flat roofs, open beams and big glass walls. That rules out shingles, which need real slope (CRC R905), and puts the focus on drainage and membranes.

What are the roofing options?

Most Eichler owners choose between spray foam, which insulates and needs a coating renewed periodically, and a TPO membrane (InterNACHI: 7 to 20 years). EPDM (15 to 25), modified bitumen (about 20) and traditional built-up roofing (about 30) are the other options (InterNACHI).

What about the ceiling and insulation?

The underside of an Eichler roof is the ceiling you see: exposed beams and tongue-and-groove decking. That makes leaks visible and repairs a finish job. Rigid insulation or foam on top is the only way to add R-value.

What's specific to the South Bay?

Because Santa Clara County is climate zone 4, an Eichler reroof here falls under the strict low-slope cool-roof standard: aged solar reflectance of 0.63 and emittance of 0.75, or SRI 75, when more than half the roof is replaced. White or light foam coatings and single-ply membranes usually meet it. Palo Alto homes may also face design review in some neighborhoods.

How do I get the right roofer?

Look for experience with low-slope systems and Eichlers, and get the drains, edge metal and skylight details in writing. For your actual price, request a free written estimate: a licensed roofer measures the roof and prices your exact scope. See flat roof replacement, cool roof rules and dry rot and decking.

Every roofer we work with is licensed, insured and highly reviewed by Bay Area homeowners.

Get a free replacement quote

Frequently asked questions

Can you put shingles on an Eichler?

Not on the flat or low-slope sections; shingles need a steeper slope.

Do Eichler roofs need a cool roof?

Only in climate zones 4 and 6 to 15 for low-slope reroofs, when more than half is replaced.

Related questions

Sources

Sources reviewed November 12, 2026. Figures are published estimates and official fees, not quotes. Confirm prices, permits and requirements with your contractor and building department. This page is general information, not legal or insurance advice.