Roofing Square Instructions

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.

Roofing square instructions.

For example if the pitch of the roof is 7 12 look up the number 7 on the square. This is pretty simple. 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. 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. Feet then you will have 20 squares. The speed square was invented in 1925 by albert swanson. The degree scale on the rafter square can be used to mark any angle cut across a board.

Patent 1 007 539 issued october 31 1911. A carpenter s framing square includes some tables stamped right into the tool itself. If your roof is 5 000 square feet you will have 50 squares. This article explains how to make quick use of a framing square and its imprinted data to get some basic roof measurement data like roof pitch or slope rafter lengths and end cuts.

To build something great means much more than construction. Look on the first line of the roofing square to determine the length of common rafters per foot run. Here we provide downloads of framing square instructions historical documents and more information about the framing square or carpenter s square or steel square including early framing square patents and framing square use guides. Roofing square conversion calculator.

If your roof is 2 000 sq. See figure 16 place the pivot point on the mark where the cut is to be made on the board. Roofing pitch for square roof area. As a miter square for accurately marking 45 angles and.

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. Each square is 100 square feet. How to use a framing square and its etched on tables to figure out roof slope rafter lengths. Now it s time to convert square feet into roofing squares.

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. Swanson was a carpenter in a small town outside of chicago. Place the square with its fence on the top edge of the lumber. 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.