The responsibilities of homeownership don’t get more basic than keeping a roof over your head. Fortunately, roofs are quite durable—most last well over 20 years. Unfortunately, when you do finally need a new one, the cost can be as steep as the slope on a 1940s Cape Cod. And if you hire the wrong contractor, you can spend thousands of dollars too much and still get terrible work. Even when things don’t go horribly wrong, many roofing businesses create too many minor annoyances for their customers, including months of waiting (with pots catching drips) for work to begin, uneven rows of shingles, poor cleanup, and damaged landscaping.

The key to avoiding roof goofs is to hire a reliable roofing contractor, get in writing exactly what will be done, and keep a close eye on the job as it progresses. Fortunately, we found many excellent Bay Area roofers—and also discovered you don’t have to pay more to get great work.

Our Ratings Tables include ratings of local roofing contractors. The tables show which areas they serve and which of the major types of roofs they work on. When selecting roofers to bid on your work, consider the following points.

Roofer Ratings

The customer survey ratings reported on our Ratings Tables come from our surveys of consumers—primarily Checkbook and Consumer Reports subscribers. Click here for more info on our survey and other research methods.

Our survey asked consumers to rate roofers they had used “inferior,” “adequate,” or “superior” on the following questions: “doing work properly on the first try,” “starting and completing work promptly,” “letting you know cost early,” “neatness,” “advice on service options and costs,” and “overall quality.” For companies that received 10 or more ratings, our Ratings Tables report the percent of each company’s surveyed customers who rated it “superior” (as opposed to “inferior” or “adequate”) on each of these questions. Our Ratings Tables also report the percent who rated each company “adequate” or “superior” (as opposed to “inferior”) for “overall quality.”

A number of the roofing outfits on our Ratings Tables were reviewed very favorably by a high percentage of their customers. Several companies were rated “adequate” or “superior” overall by 95 percent or more of their surveyed customers; some were actually rated “superior” overall by 90 percent or more of their surveyed customers. Unfortunately, however, substantial numbers of the customers of some of the outfits listed on our Ratings Tables regretted their choices: Several of the companies were rated “superior” overall by fewer than 60 percent of their surveyed customers.

Complaint Records

Our Ratings Tables also show counts of complaints we gathered from local Better Business Bureaus (BBB) for a recent three-year period and complaint rates relative to the volume of work companies do. Click here for more information on reported complaint counts and rates.

Payment Policies

To reduce the risk of dissatisfaction, pay for most or all of the work only after the job is completed. In California, a roofer cannot require a down payment of more than the lesser of 10 percent or $1,000, but home improvement contracts can require payment of larger portions of the contract once work begins. Withholding additional payments—or all payments—until work is completed gives you leverage to ensure that work is done properly and on time. Our Ratings Tables show the percentage of the contract price on a $5,000 roof installation job each company “ordinarily” allows the customer to pay at completion or later. About half of the companies allow you to withhold the entire amount until completion, but some require customers to pay at least half earlier.

Licenses and Bonds

Think ahead about obtaining additional leverage in case you’re dissatisfied with a contractor’s performance. A company may seem conscientious and cooperative early in the process, but prove harder to live with later.

By choosing a licensed contractor, the threat of license cancellation represents one form of leverage to resolve disputes. You also enhance the chances that licensing authorities will feel you deserve their help. Ask any contractor you are seriously considering to present proof of a currently valid license; then verify by calling the Contractors State License Board (CSLB) at 800-321-2752 or by checking CSLB website at In California, any roofing job that costs $500 or more must be performed by a licensed contractor.

An additional advantage: if a licensed contractor fails to perform under your contract, you can seek compensation through the CSLB complaint process. One condition for obtaining a license is that the contractor must maintain a bond of $12,500. If CSLB inspectors find that a customer is due money back from a roofing contractor, the contractor can be ordered to pay; if the contractor fails to pay, its license can be suspended or revoked and the customer can make a claim against the bonding company.

There is a statute of limitations on complaints to the CSLB: four years from the time of the work in the case of patent (easily discoverable) defects; 10 years for latent (not easily discoverable) defects. You generally must file your complaint within these time limits for the CSLB to act on your behalf. But if a contractor provides a workmanship warranty for a period longer than specified in the statute of limitations, you can press your claim through the CSLB for the full period of the warranty.

A $12,500 bond should cover the costs of most individual roofing jobs. But if a company has gone bankrupt, other customers are likely to have filed claims, and the bonding company’s total liability is limited to the amount of the bond. Wages of company workers will be paid first; then the bonding company will divide the remaining funds among all claimants, prorated according to the amount of their claims.

Proof of Insurance

Make sure the contractor carries liability and workers’ compensation insurance. A liability policy pays for damages to your home or your neighbor’s home if a ladder falls through a bay window; workers’ compensation pays for injuries to the worker who tumbled. Without these policies, you could be liable. Before signing a contract, require the contractor to show you current certificates of insurance for both types of policies.

Financial Soundness and Stability

Make sure your roofer will be around to finish the job and that you won’t be left fending off the roofer’s creditors—who could put a lien on your house.

A good way to assess financial soundness is to obtain—and check—references. Ask for the names of major materials suppliers; then ask them how much credit they commonly extend and about the contractor’s recent payment performance.

If your roof has been damaged during a storm, beware of contractors who appear out of nowhere to offer help. Lots of roofers chase storms, traveling from area to area in search of easy money. Some of these companies perform good work, but many do not; and if your newly repaired roof begins to leak a year or two later, it could be hard to track down the out-of-area contractor.


You’re likely to get two types of warranties: one on materials from the manufacturer, another on workmanship from the roofer. Many manufacturers also offer extended warranty protection.

The materials warranties offered by the major shingle manufacturers are very similar. Asphalt composite shingle manufacturers, for example, agree to pay for the cost—including labor—to repair or replace shingles proven to be “defective.” The duration of the warranty varies with the quality of shingles. A manufacturer’s warranty generally begins with a specified period of time (for example, five years) during which the warranty covers the entire cost of replacing defective shingles. After the initial period, the manufacturer’s exposure is reduced on a pro rata basis each year for the remainder of the warranty’s duration.

Roofers’ warranties of their labor often aren’t spelled out as clearly. Some simply say “labor guaranteed for X year(s).” Others say “guaranteed against defects in workmanship for X year(s).” Roofers’ warranties most often cover one to two years, but some are in effect for five years or more.

Because these statements can be unclear, be specific. Will you recover costs or have work redone for free only if you can prove things were done improperly or just if the roof leaks? And if workmanship is defective, does the contractor have to provide materials in addition to labor?

To nail it all down, ask roofers to supply the following warranty: “If roof leaks within X year(s), except as a result of accidental damage, contractor will bear the cost of labor and materials to eliminate all leaks.”

To supplement warranties—and to protect yourself if roofers go out of business and aren’t around to honor their warranties—most manufacturers now offer extended warranties covering workmanship. To buy one of these warranties, you must use a properly licensed, insured contractor approved by the writer of the warranty. Also, the warranty seller will require the roof to be installed according to proper specifications.

Extended warranties usually cost $4 to $10 per 100 square feet of the roof, depending on the length of the warranty. If your roof measures 2,500 square feet, and a typical 20-year extended warranty costs $10 per 100 square feet, you’d pay $250. As with most extended warranties, we here at Checkbook doubt that the value of these manufacturer-offered warranties justifies the cost, but they do represent additional protection.