In this example the section of roof is 20 feet wide and 14 feet from the fascia to the peak.
How far apart rafters for rib steel roofing.
Place the first screw about 7 inches from the bottom and each subsequent screw about 18 to 24 inches apart along the vertical run.
Truss spacing for metal roof just remember you can t use the same trusses for 24 48 or whatever centers.
We do recommend it however.
They give added support to the roof and also provide a nailing surface for the end panels and drip edge.
This is not a complete install only basic install on a bungalow i.
Metal roof purlins are installed horizontally under metal roofs.
The purpose of the purlins is to provide a solid foundation for the metal roofing panels and trim to be screwed to.
With traditional stick frame construction the trusses are usually spaced 2 feet apart.
In this video i m installing some metal roofing over an existing ash fault shingled roof.
Metal roofing is a unique trend in roofing and this guide will walk you through the steps including how to install metal roofing over shingles.
Pole barn construction spaces the trusses 8 feet apart or even up to 12 feet apart depending on the building design.
Wider panels allow for greater spacing between rafters.
To determine how far apart to set rafters measure the width of the metal panel and then the width of the first hill and valley of the panel.
You should use 2 4 rafters if you live in an area without heavy snow or wind loads.
Should i use 2 4 or 2 6 rafters for shed roof.
For instance the material is used in roofing might be slate and that will mean that the roof trusses are built with different spacing and different material than for instance the material and how far to space roof trusses if you had say an aluminum roof.
Purlins are 2 by 4 feet and are installed much like metal roofing.
Therefore if you want a 10 12 single sloped roof and you live in a heavy snow area then you can space your rafters 16 apart and use spf 2 6 lumber.
A metal roof must also allow for some overlap on each side of the panels which will reduce the effective width of the panel.
Purlins are non pressure treated 1 x 4 x 12 lumber that is installed on to the roof in a specific layout pattern and screw pattern.
Do all roofing projects require purlins.
They are installed on top of the roof rafters with a felt underlayment or vapor barrier installed on top.
