Overlap sidelaps of subsequent MidPly (or PlyBase) membrane lengths 2" and endlaps 6". Offset (stagger) endlaps minimum 3'. Cut endlaps at opposing diagonal corners at an angle approximately 2" from the corners to minimize “T”-seams. Apply a bead or small trowel dab (quarter size) of FlintBond™ SBS Modified Bitumen Adhesive, trowel or caulk grade, at the edge of the angled cut to avoid a capillary. Use of a hand-held hot air gun at the joint area prior to rolling the membrane will maximize adhesion. In areas prone to cold temperatures, snow and freeze-thaw cycles, it may be more effective to use the hot air gun to form joints, and to completely fill all mole holes with asphalt that has been slightly melted using the gun. It is recommended to apply a bead of FlintBond SBS Modified Bitumen Adhesive, caulk grade, at all MidPly (or PlyBase) side and endlaps to eliminate a capillary.
Don’t leave the installed Flintlastic SA MidPly (or PlyBase) exposed to the weather; cover with Flintlastic SA Cap the same day.
Before Installing Flintlastic SA Cap (or SA Cap FR)
If roof edge detail utilizes edge metal, proceed as follows. If MidPly or (PlyBase) has been applied, install minimum 26 gauge edge metal using appropriate fasteners, and set entirely in a uniform 1/8"-1/4" thick troweling of FlintBond SBS Modified Bitumen Adhesive, trowel grade. Remove any oil from the metal surface using a vinegar and water solution. Prime the horizontal surface of the metal with FlintPrime SA and allow primer to dry. Apply a bead of caulk grade FlintBond adhesive to the edge of the metal where it meets the MidPly (or PlyBase). Proceed with Flintlastic SA Cap (or SA Cap FR) installation.
If MidPly is not specified: Over the Flintlastic SA NailBase, install a 9" wide strip of MidPly onto the field of the roof and flush to the roof edge, self-adhered. Install minimum 26 gauge edge metal using appropriate fasteners, set entirely in a uniform 1/8"-1/4" thick troweling of FlintBond SBS