The method contains three easy steps. Firstly, you calculate the horizontal size between reverse partitions. Secondly, use a easy mathematical system to find out the size of the ridge board you will want and the variety of boards to purchase. Lastly, decide the elements which will have an effect on the outcomes of your calculation and think about them the place acceptable.
A very powerful reality to recollect is that you will want to sq. each A and B values, then add them collectively when utilizing the system above. As soon as that’s executed, you’ll be able to take the sq. root of the sum and that may equal the gap between the alternative corners of your roof. To find out the ridge board size, simply double this quantity. Lastly, take the brand new outcome and divide it by the size of the ridge board you resolve to go along with, rounding as much as the closest complete quantity, and that may let you know the variety of ridge boards you will have to finish your venture.
It is very important think about a few elements which will have an effect on your calculation, comparable to in case your roof has overhangs and when you plan on putting in a ridge vent. To account for overhangs, simply double the measurement you get from the A measurement. Moreover, when you plan to put in a vented ridge, you’ll be able to subtract 0.33 ft from the variety of ridge boards you want. It’s because vented ridge boards must overlap one another by 6 inches.
How To Calculate Ridge Board
To calculate the size of a ridge board, that you must know the size and pitch of the roof. The pitch is the angle of the roof, measured in levels. The commonest roof pitches are 4/12, 6/12, and eight/12.
As soon as you already know the size and pitch of the roof, you need to use the next system to calculate the size of the ridge board:
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Ridge board size = (size of roof x 2) / (12 / pitch)
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For instance, in case you have a 20-foot roof with a 6/12 pitch, the ridge board size can be:
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Ridge board size = (20 ft x 2) / (12 / 6) = 20 ft
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Folks Additionally Ask
What’s a ridge board?
A ridge board is a horizontal board that runs alongside the height of a roof. It connects the 2 sides of the roof and gives help for the roof tiles or shingles.
How do I set up a ridge board?
To put in a ridge board, that you must first measure and reduce the board to the proper size. Then, that you must nail the board in place alongside the height of the roof. You need to use galvanized nails and area them about 6 inches aside.
What if my roof has a unique pitch?
The system for calculating the ridge board size will change relying on the pitch of your roof. You need to use the next desk to search out the proper system to your roof pitch:
| Roof Pitch | Formulation |
|---|---|
| 4/12 | Ridge board size = (size of roof x 2) / 3 |
| 6/12 | Ridge board size = (size of roof x 2) / 2 |
| 8/12 | Ridge board size = (size of roof x 2) / 1.5 |
