R Value Of Concrete Block Wall Nz

This gives a total r value of r2 71 this does not include any plaster coatings to either face.

R value of concrete block wall nz.

Concrete block makes a cost effective and structurally sound wall but it has little thermal resistance. Strapping and lining depending on the particular type of insulation used and the wall thickness will provide an r value of between. R1 1 1 4 for 45 mm insulation r1 7 2 2 for 90 mm insulation. For example a typical polystyrene block wall construction consists of two layers of 50 mm eps polystyrene r value 1 31 and 150 mm concrete core r value 0 09.

Typical residential weight concrete 8 wall r 2 5. 0 13 0 64 30. R value calculator select product please select thermaslab s thermaslab m thermaslab h platinum board expol x select thickness please select 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230 240 250. Risks when installing home insulation has information about underfloor insulation.

Suspended timber froor r 1 3. Installing underfloor foil insulation can be risky. Concrete stab on ground r 1 3. As we said before the r value measures the thermal resistance of a material.

Eps based claddings directly fixed on timber framing. Timber framed wall and weatherboard cladding r 2 0. Insulation options are shown below. 8 thick concrete slab or foundation wall has an r value of about 1 04 30 while lightweight aggregate filled 8 thick concrete has an r value of about 2 18 30.

Around 14 percent of heat is typically lost through the floor. Concrete sand gravel aggregate. Built by esd consultants low impact development lid consulting in melbourne australia the r value calculator is a practical tool to simplify total insulation calculations. A 90 mm framed false wall with studs at 600 mm centres and dwangs at 1200 mm centres with insulation of r2 0 or better a 70 mm framed false wall with studs at 600 mm centres and dwangs at.

It uses the iso thermal planes method the same method as used in nzs4214 2006. If one layer of polystyrene is removed the r value of the wall will be r1 4. Mum wall r value is r1 9. Some of the possible material combinations may not be suitable for actual constructions i e.

Depending on the density of the blocks an 8 inch thick block wall without any other type of. For instance if you have a material with an r value of 12 attached to another material with an r value of 3 then both materials combined have an r value of 15.