How to estimate roofing materials.
How many squares does my roof need.
To find the squares divide the overall roof area by 100 and then round up.
The first step in a free roofing estimate is measuring the roof dimensions.
3698 sq ft with predominant 10 12 pitch.
Multiply the number of roofing squares for a low pitch roof by 1 06 to 1 08 to get the square roof area.
While it is possible to estimate the amount of necessary materials using only the total roof area measurement as can be seen from the table depending how large the pitch of the roof the actual area of the roof can differ by up to 2 236 from the measured total area at a pitch of 24 12.
100 square feet 1 roofing square 9 290304 cubic meters si unit.
And this guideline you ll need a minimum of.
Using an international foot of exactly 0 3048 meters length.
1 ft x 1 ft.
Multiply the number of roofing squares for a medium pitch roof by 1 12 to 1 25 or by 1 3.
However shingles are packaged in a way that they are light enough for the average person to carry around.
Based on your 1100 sq.
Take 16 x 64 60 feet long plus 2 feet overhang each end which equals 1 024 square feet for the front roof area.
1 roofing square 9 290304 m 3.
To properly calculate how many bundles of shingles are needed to roof your home you need to calculate the total square footage of the roof and convert it to squares.
A square of shingles is the number of shingles needed to cover 100 sq feet of roof area.
As a rule of thumb there are 3 bundles to a square assuming that you are using three tab strip shingles.
You will need to express this size in terms of square feet.
Singles are often sold in bundles with three bundles equaling one roof square.
Multiply that by 2 to include the back roof area and you have 2 048 square feet.
According to your calculator my actual square feet of house is 4807 5 numbers of squares needed is 53.
Near ridge of the roof.
The numbers i used are based on the proposal from my roofer.
This is simply 100 square feet of roof.
10 feet by 10 feet 100 square feet.
Can you help me reconcile the difference.
For instance if the roof is 1550 square feet then it is 16 squares.
Keep in mind that the average size of a roof is 1 700 square feet so your total will likely be 10 higher or lower than this figure.
The problem is my roofer is saying only 41 squares are needed.