Owens Corning Preferred Contractor
CertainTeed Master Craftsman
A roof is complicated.
Replacing one should be simple.
Enter your address and get a real estimate in minutes, built from satellite measurements of your roof. Then we meet at your house, check what the satellite can't see, and tell you if your roof needs a repair, a replacement or has more time.
Have we roofed in your neighborhood? See our work mapServing the Bay Area since 1989 · CSLB #1145218 (C-39)
Every roof starts with a different question
It's getting old, and I'm not sure it needs replacing
Call us for a free visit. We’ll walk your roof, show you photos of what we find, and tell you if you need a repair, a replacement or have some years left.
Book a visitSomething is leaking
Tell us where the water shows up and what’s been tried. At the visit we find the cause and tell you honestly whether a repair will hold or the roof is due.
Repair or replace? Read the guideAn insurer, a sale or a date I have to meet
Tell us who needs what, and by when. We write the report or plan around that date and say plainly what the roof shows. The insurer or buyer makes their own call.
Reports and deadlinesI'm ready to plan a new roof
Get a real price from your address in a few clicks, with no waiting on a site visit. You’ll see a price for each shingle line.
Get an instant estimateThe instant estimate
A real price for your roof in minutes. A satellite measures each side of your roof and how steep it is. You see a price for each shingle line, with no waiting on a site visit.
What it can't see — how many old roofs are stacked on yours, whether our trailers fit in your driveway, or how many good years your shingles have left.
The visit
We walk your roof, take photos, and ask what you’ve noticed, like where water shows up and what’s been fixed before. Then we tell you what we’d do: repair, replace or wait, and why. If you don’t need a new roof, we’ll be the first to tell you.
What it still can't see — the wood under your old roof. So your proposal lists our price for any fixes we find once the old roof is off.
Have we been in your neighborhood?
The pins on our map are jobs we've finished, with what went on each one and when. Pick your city to see city-level details, from recently completed projects to local rules and permit costs.
What homeowners say
“Van was the only company that pointed out that we still had multiple years of life on our existing roof…”
Read on Yelp “The pricing was totally transparent. I knew exactly what would be fixed cost and what would be 'time and materials.'”
Read on Yelp “Van was very easy to communicate with, and I appreciated the detailed scope of work that he prepared. Ivan did great work in removing and installing all our gutters, and I appreciated his suggestions on downspout locations to make everything look clean and tidy.”
Read on Yelp 
Talk to a homeowner we've worked for
Ask, and we'll connect you with a past homeowner, as close to you as we can, so you can hear how it went before you decide. You can also see the roofs we've done near you on our work map.
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 easy to leave out of a bid. All five are in our base bid, installed by our own crew.
1 · Deck
The wood your roof is nailed to. We check every sheet once the old roof is off, and replace only what’s gone soft.
2 · Underlayment
A waterproof sheet under the shingles that catches the rain wind pushes underneath. We choose it 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.
Shingle makers won’t back their best warranties unless the four parts underneath are done right: new metal, airflow through the attic, and the right waterproof layer for your roof’s steepness. A 30-year shingle can’t outlast worn metal or an attic that bakes it from below. So we treat those four as the investment and the shingle as the finish.
Three things that decide the final price
Here is how we take surprises off your side of the table.
What’s in the base bid
New metal at every edge, wall, chimney and pipe, painted to match. Attic vents so heat and moisture can get out. A waterproof layer chosen for how steep your roof is. We pull and schedule the permit and bill it at exactly what the city charges.
What’s under the shingles has a printed rate
Dry rot, a hidden extra layer or spaced boards can only be seen once the old roof is off. Each has a rate printed in your proposal, and we photograph what we find and share the photos with you. If the work would go past the amount you pre-approved, we stop and get your signature first.
One crew, one standard
The people behind our Yelp reviews are the people who do the work on your house. The standard you read about is the standard you get.
Six steps, and you know where you stand at each one
Instant estimate
Your whole roof is measured by satellite, its size and how steep it is, so your first price is built on your actual roof.
Free visit and findings
We check what the satellite can’t see, take photos, and tell you what we’d do: repair, replace or wait, and why.
A written proposal you can share
One plan with its full price, plus the rates for anything we find once the old roof is off. Delivered to your inbox.
Permit and preparation
We get the permit and book the city inspection. Tell us what you want protected, and it goes into the crew’s instructions.
Old roof off, wood checked
We take the old roof off and check the wood underneath. We photograph what we find and share the photos with you.
City inspection and cleanup
The city signs off, we sweep and run magnets all the way around your house to pick up nails, and you get the final invoice and your warranty papers. The permit is billed at what the city charged.
“They also did a very thorough clean up at the end of the job, using multiple magnets to find any metal debris. I haven't found one nail on the ground since the job was completed.”
Read on Yelp “Even the roof inspector commented on what great work Affordable Roofing had done!”
Read on Yelp “[The] team worked an extra day to get the roof waterproof as we recently had rain in Danville, and they made sure it was done before the rains.”
Words in brackets replace a name or fix a typo.
Read on Yelp Your home, as well as your roof
Choosing a roofer doesn't end the questions. Tell us what you're protective of at the visit, and we plan around it before the crew arrives.
“[The] team was fabulous. Really nice guys who are very hard-workers and take immense pride in their work. … We have dogs and they were very careful about not leaving gates open or debris on the ground”
Words in brackets replace a name or fix a typo.
Read on Yelp - What needs protecting — fresh paint, landscaping, pavers, a boat in the driveway. It goes into the crew's instructions.
- Who you can reach — the office, Van or the foreman on your roof, so questions reach the person who can answer them.
- What you need to do — a short list before day one: parking, access, pets, anything stored in the attic.
One ownership group for the roof and the panels on it
About one in three roofs we replace has solar on it. Affordable Roofing Systems and GoSimpleSolar share the same ownership, so 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. You don't have to get two companies to agree on who owns the leak.
Thinking about adding panels or a battery? If your roof won't outlast them, it makes sense to replace it first, and we can plan both together.
Questions homeowners ask us
We’ve compiled the most common questions homeowners ask us when they call.
How much does a new roof cost in the Bay Area?
It depends on the size and slope of your roof and the shingle line you choose. The instant estimate prices your roof from your address in a few minutes. The free visit confirms the conditions it assumes, and the written proposal names all five parts of the roof with a printed rate for anything found once it is open.
How accurate is the instant estimate?
Accurate enough that we stand behind it. It is built from a satellite measurement of every facet of your roof and our published rates, for a standard project: a single-layer tear-off on a solid plywood deck. The visit confirms those conditions. If we find something different, like another layer or spaced boards, we show you what changes and why.
How do I know if I actually need a new roof?
A free visit tells you how many years are left. If your roof still has life in it, we will say so, tell you what to watch for, and leave. A repair or waiting can be the right answer.
Can you help with an insurance, sale or purchase deadline?
Yes. Tell us who needs the information and by when, and we will write the report or plan to that date. We describe what the roof shows; the insurer, buyer or seller decides what they accept.
What is included in your base bid?
New metal everywhere the roof meets an edge, wall, chimney or pipe (painted to match), a waterproof underlayment chosen for how steep your roof is, California cut valleys, O’Hagin attic vents at about one per 300 square feet, satellite measurement, and daily cleanup. We pull the permit and bill it at exactly what your city charges.
What can change the price after I sign?
Conditions nobody can see until the old roof is off, like dry rot, a hidden extra layer or spaced boards, and any changes you ask for. The first have rates printed in your proposal; dry rot is $75 per person per hour, with lumber at cost. We photograph what we find and share the photos with you, and nothing goes past $3,500 without another signature from you.
Who handles my solar panels, skylights and gutters?
We remove and reinstall solar arrays during a reroof, with new flashing at every mount. We build gutters on site, we reflash skylights, and new skylights go in during a reroof.
What warranty comes with the roof?
A lifetime limited manufacturer material warranty, prorated after the first ten years, plus our 10-year workmanship warranty on the labor. An Owens Corning 50-year non-prorated extended warranty is available for a small added cost.
Do you take a deposit?
$1,000 at signing, 50% of the original estimate when your materials are delivered, and the balance plus any signed work orders and the permit at final. Gutters and repairs take no deposit.
Find out what your roof would cost — and whether you need one.
Start with a number from your address. Then we'll meet you at the house and tell you straight how much life your current roof has left.