Spacing On 1x4 For Metal Roof

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.

Spacing on 1x4 for metal roof.

Do all roofing projects require purlins. Refer to the rain carrying table in this booklet for the maximum allowable panel length per slope that will provide adequate drainage. The purpose of the purlins is to provide a solid foundation for the metal roofing panels and trim to be screwed to. Whether you are looking to install a metal roof on a shed or a house it s important to know the difference in the various types of metal roofs available.

If an open grid framed roof or widely spaced old solid roofing planks as the sheathing it is important to tightly stretch this so it does not sag down and hold water between the framing roof sheathing boards and the metal roofing obviously far better to put down a solid sheet sheathing first when doing a reroof in that sort of situation. An affordable option and easier to lay than shingles tin is the most commonly used type of metal roofing. Correctly measure the spacing of furring strips for a metal roof to further decrease condensation. The 1x4 s are usually applied right over the shingles once the sheeting and shingles overhangs are cut off.

Twenty four inches is a common spacing of furring strips for a metal roof. Roof pitch the metal roofing panels shown in this manual require a mini mum slope of 2 per foot to ensure proper drainage. For longer slopes and lower roof pitches contact fabral for other suitable profiles. Wider panels allow for greater spacing between rafters.

Metal roofing source grand rib 3 multi purpose classic rib grand rib 3 panels are a strong durable economic and attractive answer to the growing demand. A metal roof must also allow for some overlap on each side of the panels which will reduce the effective width of the panel. Trim the most common flashing for metal roofing is the ridge cap which is used at the peak of a roof. 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.

We do recommend it however. See page 6 for more information on screw spacing and ordering.