Roof Insulation Under The Roof Boards

Densdeck roof boards can replace any generic type x gypsum board in any roof assembly in the ul fire resistance directory under the prefix.

Roof insulation under the roof boards.

Acfoam crossvent is a thermally efficient cross ventilated non structural composite roof insulation. Exceptional dimensional stability and rated for extreme hail rockwool stone wool insulation roof boards have meet both the fm severe hail and the ul 2218a standard for impact resistance. Available in both foam and rigid form choose the board type. They keep your home at a comfortable temperature without the need to crank your heat.

It typically has 3 variations. Techni flo engineered ventilation system features a unique design. Composed of a closed cell polyisocyanurate foam core bonded in the foaming process to 1 2 thick duraboard an expanded perlite mineral aggregate board on one side and a fiber glass reinforced facer on the other. Consisting of acfoam ii or acfoam iii polyiso insulation board and osb or cdx plywood separated with and bonded to 5 individual expanded polystyrene vent spacer strips.

It s light weight provides ease of handling. Insulation board should be added between the old and new roof systems to ensure proper insulation and to reflect heat from the outside. Rigid foam board is just above the roof deck or an exterior insulation option. Size 1 4 dens deck roof board.

Bare foam board one sided sheathing board or double sided which is also reference as structural insulated panels. Rigid foam insulation also known as insulating boards provide high r values. Atlas offers accessories to promote airflow. With a warm roof the usual process is to split the insulation into two layers.

In this article we are going to explore both financial and technical aspects when it comes to looking for the best method to insulate the metal roofing. Depending on the specifics of the roof it may be possible to fully fill the rafter depth or in most cases leave a 25mm or 50mm air gap between the top face of the insulation and the. You can even place it under the foundation slab. The previous four options are all used beneath the roof.

Install it anywhere from the roof to the foundation. Rigid insulation is one of the best tools to reduce your energy costs. If 180mm is to be installed then 100mm board might be introduced between the rafters there has to be a minimum 25mm air gap between the insulation and the underside of the tiles or slates with an 80mm board running across the rafters. Not only do we withstand hail damage but our roof boards maintain their bond to the roof membrane lowering the likelihood of a catastrophic roof failure.