Use two tiles to determine the spacing required for the battens.
How to work out roof tile area.
The length l times the height h of a triangle is twice its area a2.
So if you divide your answer of a product of length times height by two you will get the area of a triangle.
If the roof has multiple pitches such as those found on dormer windows or porches you will need to draw these separately.
Roof pitch affects the actual area of the roof.
How many roof tiles do i need.
Then proceed to draw the surface area of the roof that has a different pitch.
The calculation of roofs a and b require a gable height or fall to be entered.
A minimum of a 3 inch overlap is required for the tiles.
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Roof a and b can be calculated separately or together.
Area of slope rafter length x roof length x 2 on both sides of the roof with the figures in this example the calculation would look like this.
There is a separate calculation at the right of the form for a simple shed roof.
It can also account for the gap or overlap between tiles.
Enter the dimensions below then click calculate to calculate the area.
Roof width m x roof slope height m half roof area m take this example of a perfectly square house with 76m floor space a 45 pitched roof and a 2 35m roof height.
Simply enter the square meterage or footage and pitch of your roof deck and we ll calculate how many tiles you ll need.
Given pitch and a horizontal area measurement multiply the horizontal area by a correction factor corresponding to pitch provided in the table below to determine the actual area of the roof to be used in the roofing material calculator.
After you have determined the distance between the first two battens measure the distance and set battens using that.
L 30 feet h 12 feet 30 12 2 180 square feet.
The roof slope height is 6 98m.
After drawing the perimeter of the roof add a new drawing layer with the plus symbol found in the bottom right corner.
Our roof tile calculators will also work out how many ridge hip verge and valley tiles and flashings you ll require.
Depending whether the roof area is measured horizontally possibly from a drawing or photograph a correction factor is necessary to determine the actual area of the roof.
How to use our roof tile calculators.
This free tile calculator estimates the total number of tiles needed to cover an area such as a floor wall or roof.