At a guess i would place the strapping no further apart than 16 oc.
Metal roof no strapping.
The roof has a 4 12 pitch and covers a 20 width and 48 length.
We are in the process of contacting contractors regarding the installation of a metal roof on our home and with each contractor that comes to the house we are getting more and more confused.
26 or 29 is a variable that must be considered as is the type of fastener and the pitch of the roof.
The top chords of some of the trusses seem to be slightly bowed because if i lay a straightedge from peak to eave along some of those lines one or more of the purlins is up to 1 2 higher than the others.
The gauge of the metal 24.
The width of metal panels will determine the rafter spacing.
Standing double locking seam does this tend to sweat on top of asphalt shingles.
The wider the roofing panels the greater spacing distance you should put.
A standing seam metal roof is usually more expensive than a metal shingle roof sometimes up to twice the price but this will depend on the types of metal sheets used corrugated or ribbed steel sheets are cheapest whether or not you purchase during a sale your roof style and amount of coverage required and whatever offers your roofing contractor has available.
Should it be installed over the existing asphalt or strapping 2.
Our ample selection of metal strapping restraint steel strapping will keep your timber work sturdy.
Osb and plywood are sponges in this situation and love to rot.
The metal roof purlins spacing must be done correctly within narrow tolerances.
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My simple gable roof is built with trusses covered by osb then underlayment then 2x4 strapping purlins.
Question from june in new hampshire.