Page 9 - SureCav Design Handbook 2018

Quick Facts Page | 9

● Increases floor space
Construction Methods
● Permitted 25mm clear cavities
Reducing the wall width
● Option to add more insulation

Why build the old way When you can accomplish
like this? THIS with SureCav25!

Stone SureCav25
Stone, brick or
Backing block other masonry
50mm Cavity 470
345 75mm Insulation 100
75mm Insulation
Internal leaf
Internal leaf Reduces the
wall width by
125mm!

A reduction in wall thickness of 25mm will increase the internal dimensions of the property by
50mm in each direction and result in an average of 1.25% increased floor space over two
storeys. Already an additional 5% floor space will have been gained by removing the need for
100mm concrete backing blocks. This can rise to upwards of 6% or more additional floor-space
in cases where random stone is used in very severe weather zones. Consider this: with just a
1.25% gain, this is equivalent to the floor space of 1 extra house on an 80 house site!

Brick builds: Lower the U-Value SureCav25 provides a Example:
25mm SureCav25 permitted
with the help of SureCav25! clean, consistent, (clear cavity) directly fitting
mortar and moisture- against the breather membrane
Example: of the timber-frame
100mm overall cavity width free, BBA approved
75mm insulation 25mm clear cavity in
25mm SureCav25 (clear cavity) SureCav25
U-Value is 0.18 W/m 2 K up to very severe
25mm clear cavity
exposure zones.
Brick or
75mm insulation SureCav25 will other masonry
significantly reduce
SureCav25 Suitable for all
25mm clear cavity
labour and material masonry finishes
Brick or costs with a faster,
other masonry
cleaner build and is
Suitable for all
masonry finishes durable, remaining
effective for the life of SureCav25 shown
SureCav25 shown with a timber-frame
with lightweight the building, ensuring construction, double-
block inner leaf and skinned plasterboard
12.5mm plasterboard no water penetration and brick outer leaf
from wind driven rain.