How To Seal Aluminum Roof Panel Seams

Step 2 insert a tube of butyl caulking into a caulk gun and snip the end off using sharp scissors.

How to seal aluminum roof panel seams.

Peel back the. Designed to stay soft and flexible they ensure a positive seal when jointing roof or wall panels. Mcr uses 3m autobody sealant 08300 29 15. Lay 3 inch wide butyl tape.

The elastomeric at roofing panel seams may work for a few years if squeezed or brushed into the seams but the best way is to loosen the fasteners at the seams assuming overlapped seams and caulk tube it onto the lower sheet then replace the fasteners so it squeezes the sealant tight between them. Lay 6 inch wide butyl tape over all horizontally lapping end seams. Exposed fasteners typically have a neoprene washer that seals the fastener head to the surface of the metal roof panel. Have to recommend against epoxy or other attempts to glue down the roof.

Non skinning non drying butyl sealants are the primary sealant in standing seam roofs and the joints of insulated metal panels. Even attempting to seal the laps between panels with a sealant should be done only with materials specifically made for the purpose. The sheets are commonly overlapped at the joints and deterioration of the material at the location of the bolts holding the panels in place can cause leaks. Metal roof systems typically include a combination of exposed and concealed fasteners.

Metal roofs expand and contract a fair amount. Step 2 use a polyurethane sealant and apply it around the boltholes on the underside of the panels and allow to dry. Position the tape with the release backing on the top side. Because the sealer tends to shrink some as it cures seams like this one between the quarter and trunk filler panel typically require two applications.

This looks like a four seasons prefab modular aluminum roof over a sun room which uses 3 foam sandwiched between sheets of dimpled aluminum painted whit. Apply a 1 4 inch wide bead of caulk over the seam where the two panels overlap. Sweep the metal roofing sheets of all dirt and debris with a push broom. These fasteners can be nails or screws.

How to seal between metal roofing sheets. Walk to one end of the roof and locate the seam where the first row of panels overlap the second row.