How Much Roof Tar Do I Need

You can usually return it if you don t need it.

How much roof tar do i need.

The 15 type is most commonly used and one roll of 15 underlayment covers 4 squares. I would agree that there is no urgent need to fix it. Get the square footage of roof and divide it by 100 and it will give the number of squares you need and for every decimal number over 3 buy a bundle to achieve the amount of material. Buy about 10 percent extra.

1square of roofing covers 100 square feet of roof a bundle is 1 3 of a square. For roof pitches of 5 12 to 7 12 use a factor of 1 3. Use a ladder to reach the bottom level. Consider other underlayment options as needed such as rubber or tar products.

The following article will help you understand the process for doing this yourself. 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. If you re using 15 underlayment and your roof slope is greater than 4 12 use 1 layer. Roofing felt is a layer of tar paper installed beneath the shingles to provide a backup waterproof membrane in case of leakage.

You can apply roofing tar to a slanted roof if you want but there typically is not much need. Determine the number of rolls of underlayment needed. If your roof pitch is 3 12 or 4 12 multiply by 1 25. Gaf timberline hdz charcoal algae resistant laminated high definition shingles 33 33 sq.

Use 1 4 for up to a 9 12 pitch. If the slope is between 3 12 and 4 12 double the amount and put down 2 layers. If the asphalt calculator outputs you require 10 tons of asphalt you should instead purchase 10 5 or 11 tons to be on the safe side and avoid unnecessarily high transportation costs. Rolls of felt are 36 wide x 144 long for 15 and 72 long for 30.

Feel free to consult with a roofing specialist about your options. 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. Knowing how to tar a roof can go a long way to saving you a lot of time money and headaches. This correction factor will take into account the greater area of the roof due to the pitch.