Overlap base sheet sidelaps 2" and endlaps 4". Offset endlaps a minimum of 3'. Turn base sheet over fascia. Do not leave installed base exposed. Cover in the same day with Flintlastic SA MidPly and/or Flintlastic SA Cap (or SA Cap FR).
Don’t leave the installed Flintlastic SA NailBase exposed to the weather; cover with Flintlastic SA Cap the same day.
Application of Flintlastic SA Mid Ply or PlyBase to insulate decks
SA MidPly or PlyBase may be adhered directly to mechanically fastened FlintBoard ISO or adhered to FlintBoard ISO Cold.
Before installing, sweep the surface of the insulation boards to remove any dust, dirt or sand particles that could interfere with adhesion.
Start application at the low point of the roof. Install flush to roof edge. Design layout so that no sidelaps are against the flow of water.
Application of Interply
Note: Proceed to “Before Installing Flintlastic SA Cap (or SA Cap FR)” if installing a 2-ply system.
Before installing Flintlastic SA MidPly (or PlyBase), sweep the underlying base sheet or primed surface to remove any dust, dirt or sand particles that could interfere with adhesion.
Apply MidPly (or PlyBase) over installed Flintlastic SA NailBase or, for non-nailable decks such as concrete, properly primed substrates. Surface must be dry and free from dust or dirt.
Start MidPly (or PlyBase) application at the low point of the roof with appropriate roll width to offset sidelaps 18" from sidelaps of base sheet. Install flush to roof edge if over base sheet, otherwise turn the MidPly (or PlyBase) over the fascia minimum 2" and secure. Design layout so that no sidelaps are against the flow of water.
Cut rolls into manageable lengths. Fold the membrane back halfway lengthwise to remove the split release film. Press membrane securely into place, and repeat with the opposite half of the membrane. Use a heavy, weighted roller over the entire surface of the Flintlastic SA MidPly (or PlyBase) membrane to secure the membrane. Work outwards to eliminate voids.