EXTERNAL WALL INSULATION SYSTEMS / TRACK /

THERMAL PERFORMANCE

The thermal insulation requirements of the Building Regulations call for levels of thermal resistance for walls that can easily be achieved through the use of external wall insulation.

PermaRock Track Systems employ either Mineral Fibre Insulation (0.04 W/mK) or EPS Insulation (0.04 W/mK) and boards are available in a range of thicknesses from 40mm to suit individual project requirements.

Thermal calculations are carried out for each project to determine the optimum thickness of insulation required to achieve the required U-value.

The table above shows indicative insulation thicknesses required to achieve a range of U-values for six different theoretical wall constructions using the PermaRock Track Systems.

PERMAROCK TRACK INSULATION BOARD THICKNESS (mm) REQUIRED TO ACHIEVE THE TARGET U-VALUE SHOWN*
Solid 229 mm brick102 mm brick 50 mm cavity 100 mm block200 mm no-fines concrete 17 mm render150 mm lightweight metal frame 10 mm Pyrok89 mm timber stud frame 12 mm plywood140 mm aerated concrete block (7 N/mm2)
U-VALUE (W/m2L)solid 229 mm brick102 mm brick
50 mm cavity
100 mm block		200 mm no-fines150 mm lightweight metal frame 10 mm Pyrok89 mm timber stud frame 12 mm plywood140 mm aerated concrete block (7 N/mm2)
0.35100901001009080
0.3211010011011010090
0.30110110110120110100
0.27125120130130120110
0.25140130140140140120
0.20180170180180170160
0.15240240240240240220

* Based on PermaRock Track Systems incorporating EPS Insulation Boards. The U-values shown are indicative only. For complete U-value and condensation risk analyses for specific wall constructions please contact PermaRock's Technical Department.