9″ Hollow Block Insulation
- Q. What is a Cavity Block?
- Q. What are the difference between a Cavity Wall and a Cavity Block Wall?
- Q. How popular is Wall Insulation?
- Q. How can You Insulate Cavity Blocks?
- Q. Will Insulation eliminate Mildew and Mould Growth?
- Q. Will my House be Warmer?
- Q. How do I know the Blocks are all Filled?
Q. What is a Cavity Block?
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Cavity Blocks, sometimes called 9″ inch Hollow Blocks, are sometimes used for the construction of Houses and are particularly common in the Dublin Area. Picture shows a Cavity block.
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Q. What are the difference between a Cavity Wall and a Cavity Block Wall?
- A Cavity Wall is constructed by means of Building two Walls parallel to each other using Solid Blocks and leaving a gap of approx 3-4 inches between them. The Walls are not bridged anywhere and this eliminates the risk of Water penetration to the inner leaf.
- A Cavity Block Wall is constructed by building a single Wall using these Hollow Blocks (as above) and placing them on top of each other in a staggered manner.
Q. How popular is Wall Insulation?
- All houses built today have to conform with very strict Building regulations in respect of Wall Insulation. Specific U-Values have to be achieved to ensure adequate thermal Insulation. However in the recent past Houses have been constructed with little or no Insulation and can be quite problematic.
Q. How can You Insulate Cavity Blocks?
- In theory if one could look down from the top of a Cavity block Wall you would have empty Columns. By Drilling small 18mm holes into each Column and injecting Aerolite Foam, these columns can be successfully filled with high density Foam Insulation. Therefore greatly enhancing the thermal value of the External Walls.
Q. Will Insulation eliminate Mildew and Mould Growth?
- Whilst any Insulation will help to elimate the problem of Mildew and Mould Growth absolute assurances cannot be given. Normally condensation on Inner Wall is caused by warm air meeting a cold surface, if the Wall is Insulated to 80% the risk of Mildew and Mould growth is greatly reduced.
Q. Will my House be Warmer?
- Any Building can be heated if the heat is on High enough and often enough. However the real test for energy efficiency is what happens when you turn the heat off. In an Any house with no insulation will loose
heat very quickly because there is very poor heat retention. However a Home with even 80% Insulation will greatly enhance the comfort levels and efficiency of your home.





