Fitting Roof Insulation Board

Stagger the horizontal joins.

Fitting roof insulation board. 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. Make sure that the insulation you are using is the same thickness so that the metal roof will fit better. Rigid roof insulation board. Use a chalk box to snap chalk lines on the roof deck.

Batts between rafters in would require adding ventilation between the insulation roof deck. It comes in standard size 4 8 sheets and smaller sizes in many different thicknesses from 1 4 inch to 2 inches. The bottom of the insulated plasterboard should meet the floor level of the roof space. You can even place it under the foundation slab.

Hack n stack sealed foam board between the rafters would be better since it s at least an air impermeable insulation but even that would require a vent gap below the roof deck to meet code and you d still be under r38 on that 2x6 rafters unless you fattened it out per holladay s recommendation. Butt the ends of the boards up together. Install it anywhere from the roof to the foundation. Align the insulation boards with the chalk lines and lay them onto the deck.

In this case simply lay the insulation between the purlins. Rigid insulation is one of the best tools to reduce your energy costs. Rigid foam insulation also known as insulating boards provide high r values. Here is how we cut and fit our pir insulation to insulate the walls and roof of the house.

They keep your home at a comfortable temperature without the need to crank your heat. Stagger the joints to. Foam board insulation is easy to use and is a great diy way to add some insulation. With a warm roof the usual process is to split the insulation into two layers.

It s light weight provides ease of handling. 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. After cutting the plasterboard to width so that it fits between horizontal centres of rafters screw the insulated plasterboard to the rafters. This technique is the same for all rigid insulation such as kingsp.