The insulation boards should be laid with the plywood face up.
Warm deck roof boards.
How to install insulation in a flat roof with timber deck insulated above the joists.
This video will demonstrate how to install a cure it grp waterproofing system in a warm roof build up.
Cold deck roof a cold deck roof is where the insulation is placed between the joists rafters or in between the ceiling joists in the case of a pitch roof.
Introduction warm cold roofs this guidance offers guidance on the difference benefits between warm and cold roofs.
Set the quinn therm qrfr ply insulation boards onto a wide 30mm bead of vapour resistant sealant applied to the upper surface of all the joists and cross noggins.
Warm deck insulation 1.
Ventilation is required for these roofs.
It is recommended where possible to use the warm deck method of insulation where the principal layer of roof insulation is positioned above the structural deck.
Insulating a timber deck flat roof can be done using warm deck construction method or cold roof construction method.