Best Insulation For 2x6 Exterior Walls

You don t have to do all closed cell foam to meet code.

Best insulation for 2x6 exterior walls.

You re lucky having 2 6 walls gives you options. Fiberglass batts both batt and blown in fiberglass are as strong a choice for interior walls as for exterior walls and they make for an easy installation. R value refers to the insulation s resistance to heat flow. With foam it green spray foam insulation you seal and insulate in one quick and easy step.

Once the insulation is in the wall and sealed up with drywall it is not easy to change out. Johns manville r 21 67 81 sq ft unfaced fiberglass batt insulation 15 in w x 93 in l item 204733. Johns manville multi purpose 5 33 sq ft unfaced fiberglass roll insulation 16 in w x 4 ft l item 35136. So let s take a look at those numbers if fiberglass batt insulation is used an r 13 batt fits into a 2 4 wall while an r 19 batt works in a 2 6 wall.

Use 2 3 inches closed cell foam it green for 2 6 walls. Insulating should include air sealing as described in chapter 4 comprehensive air leakage control walls can be insulated as part of a major repair job or renovation. For pricing and availability. Not only do 2 6 walls require more lumber but they require more insulation as well.

Eco friendly insulations cellulose sheep s wool and cotton insulations provide superior soundproofing throughout the entire home and are our top picks for interior soundproofing. When you are insulating two by four 2x4 and two by six 2x6 framed exterior walls and want to use fiberglass insulation what thickness is best the question becomes all more critical because of the permanent nature of wall assemblies and wall insulation. Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation. Find your zone on the map and then use the chart to determine the level of insulation you need to properly insulate your attic walls floors and crawlspaces.