Roofer and solar installer under one roof Over 1,000 jobs · Roofing in Contra Costa since 1989 CSLB #948715 · Licensed in-house
GoSimple — Roofing | Solar | Energy
(925) 386-1175
Roofer and solar installer under one roof Over 1,000 jobs · Roofing in Contra Costa since 1989 CSLB #948715 · Licensed in-house
GoSimple — Roofing | Solar | Energy
Roofing · by Affordable Roofing Systems

A roof is complicated. Buying one should be simple.

Our roofing is done by Affordable Roofing Systems, our family-owned sister company, roofing in Contra Costa for 37 years. Get a real number from your address in minutes, then meet the crew at your house to check what the satellite can't.

Affordable Roofing Systems · CSLB #1145218 (C-39) · Licensed · Bonded · Insured

Aerial view of a finished Owens Corning Duration COOL roof in Mountainside on a home in Moraga, CA
Affordable Roofing Systems People Love Us on Yelp 2025
The five parts of a roof

What your roof needs to last

Shingles are the part you see. The deck, underlayment, metal and ventilation decide whether they last, and they're the first places a low bid saves money. All five are in the base bid.

1 · Deck

The wood your roof is nailed to. Every sheet is checked once the old roof is off, and only what's gone soft is replaced.

2 · Underlayment

A waterproof sheet under the shingles that catches the rain wind pushes underneath, chosen for how steep your roof is.

3 · Metal

Seals the edges, walls, chimneys and pipes, where most leaks start. All new, painted to match, never reused.

4 · Ventilation

Lets heat and moisture out of the attic so they don't bake the shingles or rot the wood. In every base bid.

5 · Shingles

The part you see and choose. Owens Corning or CertainTeed in four lines, and color never changes the price.

How homeowners are protected

Three things that decide the final price

01

Everything your roof needs is in the price

New metal at every edge, wall, chimney and pipe. Attic vents. A waterproof layer chosen for your roof's steepness. The permit is pulled for you and billed at exactly what the city charges.

02

What's under the shingles has a printed rate

Dry rot, a hidden second layer or spaced boards only show once the old roof is off. Each has a rate printed in your proposal, and you see photos before anything is fixed.

03

Solar on the roof? One plan

The array comes off, the new roof goes on with new flashing at every mount, and the panels go back up, on one schedule and in one proposal.

If you don't need a new roof, we'll be the first to tell you.

Affordable Roofing Systems on Yelp

What homeowners say, word for word

“Van was the only company that pointed out that we still had multiple years of life on our existing roof…”
Liz W. · Walnut Creek
“The pricing was totally transparent. I knew exactly what would be fixed cost and what would be 'time and materials.'”
Boris E. · San Francisco
“They never tried to sell anything that I do not need. The work is clean and they cleaned up the site each day.”
Wai P. · San Francisco

See what your roof would cost, from your address.