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Posted 20 hours ago

STANLEY Carpenters Steel Roofing Square 600 x 400 mm 1-45-530

£9.9£99Clearance
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ZTS2023
Joined in 2023
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About this deal

So a 20 foot wide building with a 40 degree pitch = 40 d ridge angle and 50 d seat angle (wall plate) just square off the 50 d to get the bird mouth ( 1/3 depth of rafter). START WITH 90 DEGREES SO A 40 D PITCH ROOF= 40d PLUMB/ TOP/ RIDGE CUT, THE SEAT CUT WILL BE 50 DEGREES ( 40D +50D=90DEGREES).

CUT ROOFING IS EASY IF YOU KNOW THE BASICS, FIRST THING NOT MENTIONED HERE IS ANGLES..IE COMMON 40 DEGREE ROOF PITCH...

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