Page 34 - Architects Design and Installation Manual

Page | 34 Quick Facts
Reduce Wall Thickness ● SureCav25 greatly reduces wall width

BBA approved very severe exposure zones ● Option to increase insulation thickness

Protected 25mm clear cavity ● Helps to lower U-Values

Example 1: Designed to achieve a U-value of 0.18 W/m²K with a random stone outer leaf
Current NHBC wall requirements What SureCav25 will achieve!
Stone outer leaf
Stone outer leaf
75mm cavity
SureCav®25

250mm
100mm
75mm Insulation
75mm Insulation
Inner block leaf
Inner block leaf
12.5mm Plasterboard
12.5mm Plasterboard
Standard construction: With SureCav25:
Stone outer leaf; Backing block (100mm); No backing block (saves 100mm); Clear cavity
150mm overall cavity width’ 75mm clear of only 25mm; 100mm overall cavity width.
cavity. (very severe weather zone) U-Value as low as 0.18 W/m²K
Conclusion: SureCav25 reduces the wall width requirement by 150mm
Example 2: Designed to achieve a U-Value of 0.18 W/m²K with brick outer leaf

Current NHBC wall requirements What SureCav25 will achieve!

Brick outer leaf
Brick outer leaf
75mm cavity
SureCav25
150mm
100mm

75mm Insulation 75mm Insulation

Inner block leaf Inner block leaf
12.5mm Plasterboard 12.5mm Plasterboard
Standard construction: With SureCav25:
Brick outer leaf; 150mm overall cavity width; Clear cavity of only 25mm; 100mm overall
75mm clear cavity. (very severe weather zone) cavity width. U-Value as low as 0.18 W/m²K
Conclusion: SureCav25 will reduce the overall wall width requirement by 50mm