How To Fit Roof Insulation Boards

You need to nail them to the underside of the rafters to ensure they can be fixed.

How to fit roof insulation boards.

Flat roof insulation installation the rigid foam board insulation we used was 2 thick and came in 4 x 8 sheets. Foam board insulation is easy to use and is a great diy way to add some insulation. 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. Your rigid boards will need to be cut with some logic so that you can move from one side of the roof to the other.

It s light weight provides ease of handling. It comes in standard size 4 8 sheets and smaller sizes in many different thicknesses from 1 4 inch to 2 inches. 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. 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.

Some types of thicker foam board insulation are available but they may need to be special ordered. Insulation boards come in different sizes and as long as you figure out a plan as to how you will cover the rafter space then you should be fine. Talking about metal roof insulation this thing is one of the most challenging things people work in this field is facing it demands and requires excellent skill and expertise which you may only get from a reputable roofing contractor. Measure the roof with a tape measure.

Calculate the total square footage of the roof to determine the number of insulation boards you need to complete the installation. 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. Once the roof demo was complete and the flat roof was cleared of any remaining debris some rotted 2x material around the perimeter of the roof was replaced.