It is the most visible piece of the roofline.
Separation board in roofing.
Underneath the membrane there is usually a separation barrier and or some sort of insulation board.
It usually encases lights and internal gutter systems.
Roof membrane available in 40 50 and 60 mil thickness.
Trim the boards to fit as needed.
Tested in accordance with astm e84 its surface burning characteristics are flame spread 0 and smoke developed 0.
Separator polyiso roof recover board typical physical properties test astm values strength tensile strength c 209 500 psf 24 kpa min compressive resistance 10 consolidation d 1621 20 psi 138 kpa min dimensional stability change length width d 2126 2 max moisture moisture vapor permeance e 96 1 perm 57 5 ng pa s m2 water absorption c 209 1 0 max.
A cover board provides separation between a roof cover and insulation that may not be compatible or the attachment adhesive of the roof membrane is not compatible with the insulation.
Below the fascia is the soffit that face downward.
Position the fastening plates over the insulation board.
Cover boards have historically had two uses.
Properly installed energyguard perlite roof insulation is suitable for use under built up and modified bitumen roofing.
To prevent blistering with built up roof membranes bur and to provide a separation layer and flat surface in re cover situations.
Single ply membranes are installed either as fully adhered or mechanically attached systems depending on each roof s condition installer s preferences and other factors.
All loose and protruding gravel must also be removed.
The fascia is the board along the bottom of a roof that faces outward.
Jm 3 oz polyester slipsheet is intended for use as a separation layer between an existing roof system and a new single ply recover system.
In addition national roofing contractors association nrca has issued bulletins over the years recommending the use of cover boards to minimize damage to polyiso.
Numerous studies show the value of cover boards in enhancing a roof cover s ability to resist damage by hail.
It is also widely used as a separation board over existing roofs in re cover installations.
Insert a plate every 2.
In re cover applications all wet areas of the old roof must be removed.
Only product in the marketplace to offer prefabrication of the entire roofing system.
Most common insulation is iso or eps foam board.
Densdeck roof boards are fm tested and approved as the only 1 2 gypsum product to meet the calorimeter requirements for conventionally insulated decks.
This article explains the importance of fascia and soffit boards and how to maintain the joints where they meet.
