However the screw placement diagrams commonly are.
Slats under metal roof.
For many applications a layer of plywood underneath your metal roofing is an unnecessary expense.
The first goal of roofing underlayment is to keep the roof deck dry before installation of the metal roofing material.
5 4 x 4 slats are acceptable decking still not if just 4 oc supported 24 oc if hitting nail penetrations full 1 nail penetration into 2 x structure stock on panel sides.
Traditionally metal roofs have used standard 30 pound felt paper underlayment.
When putting on a metal roof how far apart do you space the furring strips.
2x4 s on flat 24 oc is what scott s pdf said as a minimum even if overlay on existing decking and old roof covering.
Regardless 1x4 decking slats aren t acceptable.
Yes it will be slats or no slats 5 13 2016 within the installation discussion of the residential metal roofing forum.
Underlayment must also act as a secondary weather barrier in case the roof fails.
Get the hex head roofing screws with washers and silicone sealer made onto them they will hold a lot longer then nails.
You also could install a corrugated through fastened metal roofing product and probably not have issues.
Experienced do it yourselfers can use a nail gun with 8d nail clips instead of a hammer and nails.
If your home s existing shingles are pretty curled you could install a textured metal roof such as a metal shingle shake or tile directly over the curled shingles along with underlayment.
I prefer to use screws for metal roofing.
Thus you have a 1 1 2 clearance from the deck the the underside of the metal roofing which would be screwed into the the vertical slats.
Do you have the same question.
Allowable gap between firring strips relates to the ability of the roofing material to resist buckling or crumpling under snow wind or walking loads.
Follow this question.
If you have a good solid roof other than some shingles it would be ok to put down slats if you nail or screw them to the rafters screwing or nailing into plywood will not hold over time.
The spacing of the vertical slats would not necessarily have to be over the rafters if the decking is good but instead would be spaced according to the width of the panels.
Metal roofing panels rated for architectural use attached to purlins horizontal pieces of wood or metal fastened to roofing trusses are structurally sound when installed according to your roofing manufacturer s instructions and local building codes.
