Just 2 layers I recommend, because if you add an additional layer the roof will get damage and collapsed.
Usually not more than two.
Use wooden shingles.
As far as I know there is not. The type of roof, way that the shingles were installed, age of the shingles, number of layers of shingles, and many other factors all affect how a roof ages. I would suggest that if you are dealing with your insurance company you contact an engineering firm who specializes in this to conduct a study of your roof.
yes you can place new shingles over old shingles as long as the first layer of shingles are not curled....you will need 1 1/4 - 1 1/2 roofing nails..and 2 courses is the limit...follow same procedure as first roof installation
Shingles are used to prevent water from entering a home through a roof. They are placed in the upper section of the house overlapping eachother, when it rains, the water just floats out of the roof.
Most will have a layer of plastic-like fabric underneath but older shingles may just have plywood underneath.
The material used to make the shingles on a roof determines how often a roof needs to be replaced. For example, barring damage from extreme circumstances, slate shingles will probably last the entire lifetime of a house, where as asphalt shingles will probably need to be replaced every 15 to 30 years.
form_title= Asphalt Shingles form_header= Put a new roof on your home with asphalt shingles. What color shingles do you need? *= _ [50] What size shingles do you need?*= _ [50] Are you replacing a whole roof?*= () Yes () No How old is the roof?*= _ [50]
A 30x50 roof has 1,500 square feet which is 15 squares. 3 bundles of shingles equals 1 square so you will need about 45 bundles.
Hi, do you mean how many bundles of shingles would be required for a 40 x 20 roof?
Depends on weather, and brand. Generally shingles on a normal house will last 15 to 20 years in normal weather.
Well there is many places that offer you a variety of roof shingles. But the place that i would recommend that you buy the roof shingles would be at Home Depot or Lowes they offer different kinds of roof shingles. And they probably have the same kind your house had.