Roof Overlay Board

Asphalt and paraffin impregnated coated fibreboard roof insulation and insulation overlay board.

Roof overlay board.

A flat roof that had been over coated with a liquid based system which itself is breaking down a bonded overlay would not be suitable although with some preparatory works a mechanically fastened overlay system might be an option. 1 4 spans flute widths up to 2 5 8 flexural strengths parallel lbs. The additional price is mostly related to the extra labor that goes into a tear off roof. It s light weight provides ease of handling.

Insulation joint tape section of this manual. R values 28 tested in accordance with astm c518 spannings. It s for this reason that many people choose to go with an overlay roof rather than a full tear off. Tin roofing also known as metal roofing is considered more durable than composition or wood shingles.

Ideal for re roof applications or as a new substrate for a modified bitumen or bur roofing membrane asphaltic cover boards are dimensionally stable providing strength and durability. Less expensive since you re simply adding another layer of shingles on top of the old roof your labor costs will be considerably. This is because you get to skip the whole process of tearing up the existing roof. Rigid roof insulation board.

The roofing is manufactured in panels that. 1 4 dens deck roof 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. That process can be time consuming and messy so.

One major advantage of doing an overlay versus a tear off is the amount of labor involved. That is to say that laying down a new roof on top of the existing roof saves hours of labor. Installing wood stripping under a tin roof. Count on iko for the best in asphaltic cover boards.