The sentence my concern is that spray on insulation will prevent the masonry wall from properly breathing thus trapping moisture in the wall and causing efflorescence.
Double brick wall insulation.
If furring strips were nailed to the inner masonry there is only a narrow 3 4 inch space to add insulation.
Outer walls may be 4 inch thick bricks with inner walls of concrete brick or cinder block that is also 4 inches thick.
To understand these names a quick lesson in brick wall construction will suffice.
How to insulate an older brick home can be a challenge.
The r rating thermal resistance of a double brick wall is r0 45 compared with r0 4 for brick veneer.
An insulated double brick wall will perform better in winter because heat stored in the inner layer of brick will not be lost to the outside once the wall is filled with bradford cavity wall insulation.
Each option has its own distinct benefits but it is advisable to speak to an expert before making a decision.
Foilboard insulation systems is one of the leading australian owned insulation manufacturers and suppliers of energy saving sustainable building insulation products.
Insulation tips for double brick walls select the right insulation the most effective option for insulating double brick walls is to use a pump in loose fill wall insulation.
Spray polyurethane foam insulation is the recommended insulation material to use on the interior of a multi wythe brick wall subject to the caveats listed in this article.
Older brick homes constructed in times when energy costs were low were not built to accommodate insulation.
If you need any technical advice or would just like to find out more about the foilboard insulation panel please call 1800 354 717.
Generally speaking there are 3 ways in which brick walls can be insulated.
Brick walls can go by many names including solid masonry solid brick double brick and brick and block.
The reverse is true in summer.
The thin furring strips that hold the inside walls to this material leaves little room for insulation.
This product is installed by drilling holes in the wall between the bricks and pumping the insulation into the existing wall cavity.
These can simply be summed up as either external wall insulation internal wall insulation or the third being insulation between double brick wall layers.