Metal Roof Over Rigid Insulation

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.

Metal roof over rigid insulation. 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. The bottom layer of a single ply membrane roofing system is the roof deck or substrate. The energy argument is argumentative. Cut each sheet to the desired size using a utility knife then fasten it in place using staples or adhesive.

Make a grid frame work of 2 dimensional to make space for the insulation. The first step with roof installation is to prepare the roof deck by getting rid of all dirt dust and contaminants. Or you may also consider metal roofing over rigid insulation details even though it might be a bit pricier. Install rigid foam insulation over the entire surface of the roof.

The roof deck can be plywood metal concrete or wood planks. Jd i don t recall todd saying that he didn t like insulation just that metal directly over insulation i e. Rigid foam insulation also known as insulating boards provide high r values. Fill this space completely with insulation.

Payback is not the way to do it at least not in my. I agree to that extent and always recommend a solid deck or some sort of strapping to prevent this. Adding the metal roof insulation can be done easily when you renovate your house. Use duct tape to seal the seams and further protect against moisture air leaks.

I like rock all because of its higher r value fire and moisture resistance and good cost per r value 6. Rigid insulation is one of the best tools to reduce your energy costs. You will need to hire some well trained roofing insulation experts to make a more energy efficient home. Place the sheets close together but don t let them overlap.

This could be metal or roof sheathing and shingles. Rigid board can easily be over torqued and mess with panel alignment. They keep your home at a comfortable temperature without the need to crank your heat. Avoids nails or screws which could penetrate the metal roof and cause leaks.

Rigid foam insulation installation prepare roof deck. Use rigid foam insulation to cover wider spans of roof sheathing between joists. Install roofing over a wind barrier like spun olefin.