How To Install Metal Roof With Purlins

It is a horizontal bar that used to support building at the roof structurally.

How to install metal roof with purlins.

Next use 1 inch nails to secure some metal edging to the perimeter of the roof. Purlins are dimensional lumber that are fastened to the top chord of trusses connecting them together for bracing purposes. This installation guide provides general advice on how to install a single skin sheeted metal roof. There is an available purlin for every type of roofing material including purlin span for metal roof which is the most common material type to use this item.

Installing wood stripping under a tin roof. They give added support to the roof and also provide a nailing surface for the end panels and drip edge. Purlin is a well known material in the field of architecture structural building or structural engineering. I was planning to install directly over 2x4 purlins which are mostly already installed.

Then cover the entire roof with a layer of insulation and secure it with a staple gun. Before you install metal roofing repair any damage to the wood under the shingles. The purpose of the purlins is to provide a solid foundation for the metal roofing panels and trim to be screwed to. I am installing ribbed metal panels over a singlt slope roof on a new workshop.

Tin roofing also known as metal roofing is considered more durable than composition or wood shingles. The purlin are ultimately used to fasten the roof steel providing a diaphragm effect along with the siding when properly engineered and installed. They are installed on top of the roof rafters with a felt underlayment or vapor barrier installed on top. 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.

The structure of purlin helps to shift some of the loads that put on the metal sheeting to the main building construction by ensuring that the whole things stay in their place and adding structural integrity. During the roof installation or re roofing process after the roof sheets are prepared it is time to support their framework by installing purlins. The advice within this installation guide is of a limited nature and should only be used as a guide its not be relied upon as an exact instruction on how a roof should be safely installed which will vary with circumstances. Purlins are 2 by 4 feet and are installed much like metal roofing.

The topic we want to discuss today is the purlin installation.