#Corrugated metal roof attachment install#
#Corrugated metal roof attachment code#

And then you put down horizontal battens for the roof panel attachment.

This involves putting down vertical battens first, attaching them through the roof deck to the rafters. One effective way to use battens is to cross batten. Your attic ventilation and insulation will also help with summer energy efficiency. However, if you choose a metal roof that is either light in color, or has reflective pigment in the paint, that will be very helpful as well.

However, a true standing seam, especially one without any sort of striations or stiffening beads in the center of the panels, will probably show oil canning as the result of going over shingles like yours.Īs to the potential benefit of battens: they do create a thermal break to help minimize heat transfer from the metal to the roof deck.

#Corrugated metal roof attachment install#

You also could install a corrugated through‐fastened product and probably not have issues. You could install a textured metal roof such as a metal shingle, shake, or tile over these curled shingles (with underlayment). Now, your existing shingles are pretty curled. I normally suggest a layer of one of the higher quality synthetic underlayments, and an ice and watershield if required by code.

#Corrugated metal roof attachment code#

I interpret the International Building Code as requiring it and it’s just a good practice. Next, I highly advise the use of a layer of underlayment over the old shingles or decking, whether or not battens are used. So, whichever way you go, it’s important to choose the right product and install it per manufacturer specifications.

Thanks, Edward, for allowing me to share our correspondence on this frequently asked question.Ī: There are several things to consider when determining whether, or not, to have your new metal roof installed over battens.īy design, some metal roofs MUST be installed over battens, some MUST NEVER be installed over battens, and some can be installed over battens OR solid decking. This great question comes from Edward C., a homeowner who plans to have a new metal roof installed over the aging, existing shingles on his single story home. Q: Can a metal roof be installed over my existing shingles without the use of battens? Home | Roofing Information | Metal Roof: Battens or No Battens for Installation? Metal Roof: Battens or No Battens for Installation?Īp| Filed under: Articles, Battens or No Battens, Roofing Installation