Insulation Against Metal Siding

Metal siding and insulation do not go hand in hand and you do have a choice on the matter.

Insulation against metal siding.

Many homeowners don t find out just how poor an insulator metal siding can be until after it s installed as well at which time it s difficult to remedy the situation. A second option for insulating a wall with no sheathing is to use spray foam. A newer option we like from ecofoil is their double bubble wrap roll insulation for metal buildings. Therefore if you want heat to stay within the area that has metal siding then insulation is necessary.

Polyurethane foam has the added benefit of sealing air leaks but you shouldn t consider installing it directly against the back of the siding. Adding insulation behind the steel siding also adds even more the considerable expense and installation issues surrounding the material. Spray foam especially closed cell spray foam will cling tenaciously to siding gluing everything together. Some homeowners choose to use unfaced fiberglass insulation batts.

However if the metal siding is just in a garage where you store your car the effort it would take to install insulation may not be worth it. Make a better choice for your home. Metal siding does not have insulating properties. The stud spacing on our metal buildings are typically 4 or 5 foot on center.

You can install fiberglass insulation against the metal roof and prevent moisture problems if you cover it with a vapor barrier. Taping the insulation together to achieve the on center coverage isn t best option either.