How To Seal Aluminum Roof Panel Seams

Walk to one end of the roof and locate the seam where the first row of panels overlap the second row.

How to seal aluminum roof panel seams.

Lay 3 inch wide butyl tape. Designed to stay soft and flexible they ensure a positive seal when jointing roof or wall panels. Step 2 use a polyurethane sealant and apply it around the boltholes on the underside of the panels and allow to dry. Step 2 insert a tube of butyl caulking into a caulk gun and snip the end off using sharp scissors.

Check the joints of a corrugated metal or plastic roof. Not as bad as vinyl siding but enough to work the screws over time. These fasteners can be nails or screws. Apply a 1 4 inch wide bead of caulk over the seam where the two panels overlap.

Lay 6 inch wide butyl tape over all horizontally lapping end seams. Peel back the. 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. Sweep the metal roofing sheets of all dirt and debris with a push broom.

How to seal between metal roofing sheets. Position the tape with the release backing on the top side. Exposed fasteners typically have a neoprene washer that seals the fastener head to the surface of the metal roof panel. 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.

Non skinning non drying butyl sealants are the primary sealant in standing seam roofs and the joints of insulated metal panels. Metal roofs expand and contract a fair amount. 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. Metal roof systems typically include a combination of exposed and concealed fasteners.

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. Overtime fasteners have a tendency to back out of their seated position.