Fairfax County Attic Insulation Code

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Fairfax county attic insulation code.

Fairfax county virginia land development services building officials blog. For example cellulose attic insulation has an r value of r 3 7 per inch. 4 use r 10 when applied continuously against the wall. The r value of an insulation material is usually listed in terms of r per inch.

Responsible energy codes alliance responsible energy codes alliance responsible energy codes alliance. Helpful links reca mission and members. Use r 13 when applied between studs or furring strips. Please illustrate or otherwise provide information to show compliance with applicable code requirements.

Hire the best insulation contractors in fairfax va on homeadvisor. The codes regulating site development are generated from federal state and county laws regulations resolutions and policies as well as specific standards from the virginia department of transportation. For any thickness the total r value equals the rated r per inch multiplied by the thickness in inches. A 6 inch thick installation will therefore have a total r value of r 22 2 6 inches x 3.

We have 509 homeowner reviews of top fairfax insulation contractors. Use r 13 when insulation is applied on the interior. Attic habitable it appears that this design meets the definition of attic habitable. A finished or unfinished attic that has all the makings of a living space is a habitable attic.

The code for land development is administered by fairfax county s department of land development services. 3 use r 8 when insulation is applied to the exterior. R402 2 4 attic hatches. 5 insulation must extend from the slab edge to a length of 24 inches vertically and or horizontally.

Iecc compliance guides reca mission and members reca mission and members. Table r402 1 4 change cz4 ceiling insulation levels to u 0 030 and cz4 wood frame wall requirement to u 0 079. 2015 r202 r301 5 blocking between the trusses when using a roof design incorporating a raised roof rafter or truss heel blocking is required. Ridge remodeling and design llc fairfax insulation systems llc eko smart solutions.

Table r402 1 2 change cz4 ceiling insulation levels to r 38 and cz4 wood frame wall requirement to r 15 or r 13 r 1. The term habitable attic is relatively new to the residential code.