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 that will have an effect on the outcomes of your calculation and take into account them the place applicable.
An important truth to recollect is that you’ll want to sq. each A and B values, then add them collectively when utilizing the system above. As soon as that’s performed, you may take the sq. root of the sum and that may equal the gap between the other corners of your roof. To find out the ridge board size, simply double this quantity. Lastly, take the brand new consequence and divide it by the size of the ridge board you determine to go together with, rounding as much as the closest entire quantity, and that may inform you the variety of ridge boards you’ll need to finish your challenge.
You will need to take into account a few elements that will have an effect on your calculation, similar to in case your roof has overhangs and for those who plan on putting in a ridge vent. To account for overhangs, simply double the measurement you get from the A measurement. Moreover, for those who plan to put in a vented ridge, you may subtract 0.33 ft from the variety of ridge boards you want. It’s because vented ridge boards have to overlap one another by 6 inches.
How To Calculate Ridge Board
To calculate the size of a ridge board, you should know the size and pitch of the roof. The pitch is the angle of the roof, measured in levels. The most typical roof pitches are 4/12, 6/12, and eight/12.
As soon as you understand the size and pitch of the roof, you should 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, when you’ve got 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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Individuals 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 assist for the roof tiles or shingles.
How do I set up a ridge board?
To put in a ridge board, you should first measure and lower the board to the proper size. Then, you should nail the board in place alongside the height of the roof. It’s best to use galvanized nails and house 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 should utilize the next desk to search out the proper system in 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 |
