Any rotten or damaged boards must be replaced before applying new shingles.
Roofing recovery board definition.
Fully adhered cover boards should be applied in accordance with proper roofing procedures.
It is treated for surface retention of bitumen and available in 2 x 4 0 6m x 1 2m 4 x 4 1 2m x 1 2m and 4 x 8 1 2m x 2 4m with a nominal thickness of 1 2 13mm.
However the use of a cover board far exceeds that of a substrate it also serves as a critical component that helps to extend the life of a roof.
To prevent blistering with built up roof membranes bur and to provide a separation layer and flat surface in re cover situations.
In addition national roofing contractors association nrca has issued bulletins over the years recommending the use of cover boards to minimize damage to polyiso.
The cover board should be secured to the bottom layer of insulation in a full and even application of hot asphalt applied at a rate of 30 pounds per square or specially formulated adhesive.
The installation of a new roofing system over an existing roof is if viable an alternative approach to roof replacement.
Energyguard perlite recover board is a heavy duty 1 2 thick perlite roof insulation board composed of expanded perlite cellulose binders and waterproofing agents.
We all know how drawn out and expensive the traditional method can be.
The major advantage to this approach known as recovering is the cost savings associated with not having to remove and dispose of the existing roof membrane.
Specifically developed for use on flat roof refurbishment projects hardrock multifix recovery board is a non combustible board compatible with all commonly used flat roof membranes including single ply epdm bitumen and liquid applied systems.
These roofing systems depend on proper installation for successful performance.
Without a cover board the roof is missing added durability.
Insulation can be flammable so installing a cover board can help deter the spread of fire from outside the building to the insulation and into your building.
For best roof performance consider re decking board roof decks with a layer of apa the engineered wood association grade plywood before installing new shingles there are more than two layers of existing shingles on the roof.
Acfoam recover board is used in built up bur modified bitumen mechanically attached single ply and adhered single ply roofing systems.
Cover boards have historically had two uses.
The building is more susceptible to hail fi re and wind damage.
Recovery board is designed to save people time and money when it comes to redoing a roof.
Using recovery board foam provides a protective covering and insulation to help reinforce and strengthen any roof.
Manufactured and tested for use in recover applications.
