Exposed Exterior Spray Foam Insulation

But the spray foam is still exposed to the attic and needs an ignition barrier.

Exposed exterior spray foam insulation.

This type of foam insulation has a higher r value per inch making it also suitable for small areas that require the highest possible r value to meet building code requirements. Spray foam exposed to sunlight will deteriorate in a year or so. As long as it is closed cell insulation. Exterior insulation benefit vs cost while exterior rigid foam insulation has its benefits it s really expensive to protect regardless of how you do it.

If used in some place like an attic exposed spray foam insulation can be left exposed but not in living areas of the home. Exposed polyurethane foam plastic insulation sold as non burning or self extinguishing parents won a suit against the manufacturer led to a 14 month investigation by the us federal trade commission genesis of chapter 26 foam plastic in the ibc. As far as i know most types of rigid foam insulation can t be left exposed but need to be covered with a layer of drywall for fire resistance. If you ve got spray foam insulation in an attic for example it s probably already separated from the living space by a thermal barrier.

Luckily we understand this subject and will explain the thermal barrier and the international residential code irc in a way that you can understand. Quick and convenient to use and apply tite foam big gaps offers an easy insulating spray foam option. Building renovations demolition or building disassembly done years later can disturb spray foam insulation. Spray foam can potentially generate toxic emissions under these circumstances.

Spray foam can be left exposed if it used indoors. The ftc investigation consent decree. Performing hot work on or near polyurethane foam may lead to potential exposures to isocyanates and other toxic emissions. This type of insulation can be more expensive than loose fill insulation.

It can be sprayed or injected into walls and it expands to fill the wall cavity even the smallest crevices and eventually hardens. It is recommended for use in both interior and exterior environments and is sandable and paintable. Use to seal out air moisture and pests in basements or crawlspaces attic hatches and plumbing hvac or electrical penetrations. Eifs with the fiberglass mesh is expensive and not that durable.

Most ceilings are made of 1 2 drywall. Spray foam insulation is made of two chemicals that are combined to create a foam.