How Much Roof Tar Do I Need

If the slope is between 3 12 and 4 12 double the amount and put down 2 layers.

How much roof tar do i need. For roof pitches of 5 12 to 7 12 use a factor of 1 3. Use 1 4 for up to a 9 12 pitch. You can apply roofing tar to a slanted roof if you want but there typically is not much need. Use a ladder to reach the bottom level.

Most experts tend to say that if that if more than 25 of a tar and gravel roof is covered in patches then the roof needs to be entirely replaced. Roofing felt is a layer of tar paper installed beneath the shingles to provide a backup waterproof membrane in case of leakage. Multiply the total area determined in step one by a correction factor to account for the roof pitch. This correction factor will take into account the greater area of the roof due to the pitch.

Feel free to consult with a roofing specialist about your options. If you re using 15 underlayment and your roof slope is greater than 4 12 use 1 layer. 1square of roofing covers 100 square feet of roof a bundle is 1 3 of a square. The 15 type is most commonly used and one roll of 15 underlayment covers 4 squares.

Consider other underlayment options as needed such as rubber or tar products. Knowing how to tar a roof can go a long way to saving you a lot of time money and headaches. I would agree that there is no urgent need to fix it. The following article will help you understand the process for doing this yourself.

Determine the number of rolls of underlayment needed. Rolls of felt are 36 wide x 144 long for 15 and 72 long for 30. Gaf timberline hdz charcoal algae resistant laminated high definition shingles 33 33 sq. The average roll of 15 pound roofing felt covers about 400 ft 2 or 4 squares while the average roll of 30 pound roofing felt covers about 200 ft 2 or 2 squares.

Buy about 10 percent extra. The answer is the number of square feet of roofing tar paper you need to purchase. What s more if you are considering buying a property with this type of flat roofing walk on the roof yourself to see how it feels under your feet. You can usually return it if you don t need it.