For estimating purposes we also assume that there is a chimney a couple of dormers and two layers of old shingles that need to be torn off and removed before a new roof can be installed.
Shingle roof work estimate.
Roof slope style.
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.
1square of roofing covers 100 square feet of roof a bundle is 1 3 of a square.
Since it takes 3 bundles of shingles to cover a square plan to purchase 3 bundles for each square.
To estimate roofing materials start by finding the total square footage of the roof and divide the number by 100 to determine the number of squares in the roof.
This gives us a 3d roof area of 1 625 sq ft.
Then add 10 to the number to account for waste.
Conventional slope roof range between 4 in 12 and 8 in 12.
Assuming this is a hip roof we multiply this by 1 1 which gives us roughly 18 squares or 1 800 square feet of the roof surface.
Shingle roofs typically have a life span of 15 30 years while membrane roofs usually last 5 15 years.
The average price for metal roofing shingles is 8 35 per square foot.
A low slope roof is anywhere from 2 in 12 to 4 in 12.
The run always remains constant at 12 inches.
Although ceramic tile roofs are expensive they can have a life span of over 100 years.
It is often compared to slope but is not exactly the same.
In general metal roofing has enjoyed a major spike in popularity over the last decade.
That is the roof s rise.
There are two main categories of roofing.