What Insulation For 2x8 Ceiling

Fitting in a 10 inch batt r 30 and still providing ventilation is impossible with a 2x6 or 2x8 rafter.

What insulation for 2x8 ceiling.

Assuming you re using fiberglass insulation which fits our wallet and our remote setting you need thicker wall or ceiling cavities to fit more insulation. The mec may allow r 19 cathedral ceiling insulation for some house designs depending on the climatic zone. Insulate pipe wherever condensation is a problem. What size insulation for 2x8 floor joists.

A typical 2x4 wall will hold up to r15 if you try to cram r19 in you compress the insulation and i believe actually get less insulative value than you would have with a lower rated. I have looked into spray foam which is pricey for 330sq ft it is 3 000 and rigid board at 4 5in r 30 value is 1 500 for the space. Hey i need to put r 30 insulation in a ceiling framed with 2x8 s regular fiberglass insulation requires 9 of space 2x10 framing. Pipe insulation duct insulation and water heater jackets.

Insulation and ventilation within the depth of the rafter. Get free shipping on qualified 2x8 wall insulation or buy online pick up in store today in the building materials department. Insulates ducts that pass through cold attics. For most areas r 25 to r 38 insulation is recommended if not required.

If the shock of stepping out of a nice warm bed onto a chilled floor has you sleeping in thermal socks insulating your floor might help.