DeHaven Construction Company"Specializing in Stucco, Stucco Repair, Interior Painting, Exterior Painting, Texture Coating (Texcote™) & Elastomeric Coatings"Roofing Estimates, Orange County, California -Roofing is a labor-intensive project, so plan on a lot of hard work. Set aside a block of time to do the entire job as quickly as possible. Don't attempt the job if you can only work on weekends. Bad weather is your only obstacle. If possible, wait for a high-pressure system to minimize the change of rain. Make sure to arrange refuse removal before starting the tear-off. Inspect your roof before starting any work. If you have an attic, start there. Look for signs of rot. Use a knife or awl to probe suspicious areas. If you find rot, note the location so you can avoid stepping there when you go up on the roof. It may not support your weight. Then go outside and use a pair of binoculars to scan the roof. A camera with a long telephoto lens will do the job, too. Look for curled shingles and worn spots where the shingles have lost the mineral granules that provide the protection. These are signs that it's time to re-roof. The older the roof, the more likelihood of problems. Estimating MaterialsShingles are sold by the square, a roofing term for 100 square feet. To determine the number of squares required, multiply the length by the width for each section of roof. Add these results and divide the sum by 100. If you can't conveniently measure your roof, you can measure your house dimensions on the ground instead. Determine the total square footage with basic multiplication, then multiply this result by the number shown for your roof pitch in the chart below. Slope (inches per foot)
A starter course is necessary at every eave and you must have enough material on hand for this. Some shingle manufacturers sell starter course shingles. Ask when you place your order. To determine the amount of starter shingles you need, measure the linear distance of each eave. An alternative is to reverse a regular 3-tab shingle so the tabs face up. You can also lay down a continuous length of roll roofing as a starter course. Drip edge is needed for all roofing. Buy enough for each run of eave and each run of rake. Metal flashing comes in rolls of varying width - 14 inches being the most common - and is cut at the job site. Aluminum is the flashing material of choice. However, valley flashing can be 90 lb. mineral surface roll roofing. 3 lb. roofing felt is usually sold in 3' x 72' rolls. Each roll equals 2.1 squares. A roll of 15 lb. felt equals about 4 squares. So if you need 13 squares of shingles for your roof, you must buy at least 7 rolls of 30 lb. felt or 4 rolls of 15 lb. felt to have enough underlayment. Also make sure to have 8-foot 2x4s on hand for safety cleats, or toe boards, and some 2x6s to use as planking with roof jacks.Buy 10-15% more material than you need to allow for waste and mistakes.
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Phone: (949) 645-2932 • (714) 647-2339 (310) 285-8590 • (562) 804-5777 • (800) 933-9737 California only |
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| Serving Orange & L.A. County California since 1987 |
What the Roofing Code
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