What Insulation For 2x8 Ceiling

What size insulation for 2x8 floor joists.

What insulation for 2x8 ceiling.

Always use proper safety precaution and reference reliable outside sources before attempting any construction or remodeling task. For most areas r 25 to r 38 insulation is recommended if not required. Insulation radiant and vapor barriers insulating 2x8 floor on 16 centers from what i m reading hamilton county tennessee only requires r19 for the floor but i can achieve r25 with 2x8 s. Fitting in a 10 inch batt r 30 and still providing ventilation is impossible with a 2x6 or 2x8 rafter.

Insulates ducts that pass through cold attics. Insulate pipe wherever condensation is a problem. Around objects that store or distribute hot water and indoor air. 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.

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. Insulation and ventilation within the depth of the rafter. Pipe insulation duct insulation and water heater jackets.

The mec may allow r 19 cathedral ceiling insulation for some house designs depending on the climatic zone.