Metal Roof Over Rigid Insulation

Cut each sheet to the desired size using a utility knife then fasten it in place using staples or adhesive.

Metal roof over rigid insulation.

Rigid foam insulation also known as insulating boards provide high r values. Adding the metal roof insulation can be done easily when you renovate your house. I like rock all because of its higher r value fire and moisture resistance and good cost per r value 6. They keep your home at a comfortable temperature without the need to crank your heat.

Rigid insulation is one of the best tools to reduce your energy costs. Or you may also consider metal roofing over rigid insulation details even though it might be a bit pricier. Rigid foam insulation installation prepare roof deck. The energy argument is argumentative.

Avoids nails or screws which could penetrate the metal roof and cause leaks. Place the sheets close together but don t let them overlap. Payback is not the way to do it at least not in my. The rigid insulation over roof would have controlled the temperature of the condensing surface the underside of the roof deck so that i would not have had to use the spray foam except at the perimeter to provide the air seal to the tops of the walls.

Use duct tape to seal the seams and further protect against moisture air leaks. You will need to hire some well trained roofing insulation experts to make a more energy efficient home. Make a grid frame work of 2 dimensional to make space for the insulation. Install it anywhere from the roof to the foundation.

Vincent i live in a 100 year old adobe in northern utah and i installed a system of exactly what you describe except i put the roofing felt over the poly iso insulation and the metal roof is a modified standing seam from metal sales that has small corrugations that let a small amount of air to flow under the panel. Jd i don t recall todd saying that he didn t like insulation just that metal directly over insulation i e. This could be metal or roof sheathing and shingles. Rigid board can easily be over torqued and mess with panel alignment.

You can even place it under the foundation slab. According to the manufacturer s instructions install the metal roofing panels over the insulation. The first step with roof installation is to prepare the roof deck by getting rid of all dirt dust and contaminants. I agree to that extent and always recommend a solid deck or some sort of strapping to prevent this.

Fill this space completely with insulation. The bottom layer of a single ply membrane roofing system is the roof deck or substrate. Use rigid foam insulation to cover wider spans of roof sheathing between joists.