Roofing Square Instructions

As a miter square for accurately marking 45 angles and.

Roofing square instructions.

Set the degree scale on the edge of the board at the required angle and mark a line along the top edge as shown in the figure. Look on the first line of the roofing square to determine the length of common rafters per foot run. Swanson was a carpenter in a small town outside of chicago. Under the number seven is the number 13 89 which means 35 28 cm 13 89 inches for each 30 cm 1 foot of the run.

Patent 1 007 539 issued october 31 1911. Make a sketch of your roof before you go out to measure it. If you are replacing your entire roof you will need to purchase shingles in 50 squares to sufficiently cover your 5 000 square foot roof. Each square is 100 square feet.

For rafters made in 2 x 6 s or larger lay the square body flush with the bottom edge of the rafter and mark along top edge of the square body. If your roof is 2 000 sq. Feet then you will have 20 squares. If your roof is 5 000 square feet you will have 50 squares.

See figure 16 place the pivot point on the mark where the cut is to be made on the board. This is pretty simple. How to use a framing square and its etched on tables to figure out roof slope rafter lengths. The speed square was invented in 1925 by albert swanson.

For example if the pitch of the roof is 7 12 look up the number 7 on the square. At boral we pride ourselves on safety being a great place to work for our employees and an industry leading manufacturer of premium building materials that will serve our customers and end users for years to come darren schulz boral industries acting president ceo. Roofing square conversion calculator. 2 000 100 20.

Locate the desired angle on the hypotenuse side of the square and pivot the tool until that angle s notch lines up with the top edge. As a protractor for easily finding and marking various common angles especially roof rafter pitches and angles for stair stringers the vertical supports on a stairway. Here we provide downloads of framing square instructions historical documents and more information about the framing square or carpenter s square or steel square including early framing square patents and framing square use guides. Then add the results together for the total square footage of your roof.

Now it s time to convert square feet into roofing squares. Rafters made by 2 x 4 s lay a carpenter square body flush with top edge of the rafter and marking the bottom edge of the square body. To build something great means much more than construction. Roofing pitch for square roof area.

The degree scale on the rafter square can be used to mark any angle cut across a board.