New Jersey Required Roof R Value

A common differentiating criteria between different types of insulation is the amount of r value they provide when.

New jersey required roof r value.

You should of course see the manufacturer provided technical data sheet for the r value of specific products. The higher the r value the better the thermal performance of the insulation. Existing attic 3 4 inches of insulation r 38. The act became effective on february 3 1976.

State of new jersey department of community affairs division of codes and standards po box 802 chris christie trenton new jersey 08625 0802 governor kim guadagno. Specific insulation requirements of section c402 2 thermal requirements of either. Uniform construction code regulations njac 5 23 1 et seq went into effect on january 1 1977. State only nj new jersey ashrae 90 1 2013 4 r 30 5 r 30 state only nm new mexico 2009 new mexico energy conservation.

Depending on where you live and the part of your home you re insulating walls crawlspace attic etc you ll need a different r value. New york recommended insulation r values zone 4. Walls should be between r 19 to r 21 basement walls r 13 to r 19. For a very good introductory overview article on r value see r values over at the website of.

The state of new jersey passed the new jersey uniform construction code act on october 7 1975. R value of various materials. Floors r 25 to r 30. The r value of thermal insulation depends on the type of material its thickness and its density.

All construction codes and their enforcement were controlled by the provisions stated in the act. R 5 shall be added to the required slab edge r values for heated slabs. Resistance to the movement in temperature through walls ceilings and floors in your home or commercial building. B u l l e t i n.

Insulation level are specified by r value. Insulation r value requirements for new jersey what is r value. Insulation is rated in terms of thermal resistance called r value which indicates the resistance to heat flow. Attic insulation run between r 49 to r 60.

Minimum insulation r value requirements non residential above roof deck. R value based method of section c402 1 3 u c and f factor based method of section c402 1 4. Typical recommendations for exterior walls are r 13 to r 23 while r 30 r 38 and r 49 are common for ceilings and attic spaces. Minimum r value non residential above roof deck 19727 57th avenue east puyallup wa.

Insulation r value requirements for usa. What r value do i need. Here s a handy r value table that covers most types of roof coverings building insulation and a few other materials. Or insulation sufficient to fill the framing cavity r 19 minimum.

The higher the r value the greater the insulating effectiveness. Recommended home insulation r values. The r in r value stands for resistance.