Existing/Retrofit

Pumped cavity wall insulation can be installed in most existing houses. If there is no insulation in the walls we can fill the cavity with bead and if there is existing insulation we can fill the remaining cavity.

Our surveyor will carry out a borescope test on your property to ensure a cavity is present and the walls are suitable for cavity wall insulation. While carrying the survey our surveyor will establish your ventilation requirements needed to comply with current building regulations. Advice can also be given on available grants and the application process. Further information is available in our grant section (LINK).

METHOD OF INSTALLATION:

When insulating the building, the operatives follow the NSAI and manufacturers drill pattern. This is to ensure that the cavities are fully filled. The holes are drilled into the external walls of the building. These holes are approximately the size of a one euro coin (22mm). Silver Bead along with an adhesive is pumped under pressure into the cavity.

All holes are patched by operatives after the pumping is complete. This is done by mixing different colour dyes with mortar to closely match the existing finish of the house.

HOW DO I KNOW IF MY HOUSE HAS A CAVITY AND IS SUITABLE FOR INSULATION?

There are a few different tell tale signs to determine if a house is suitable for cavity wall insulation.

Cavity Block

• Check meter box. You can determine the construction of the property by checking inside your meter box. Where the power cable enters the meter box, it may be possible to see into the cavity. At this point is should be possible to determine whether it is a solid wall, cavity block wall or cavity wall with or without sheets. It’s only possible to pump a cavity wall. If it’s not a cavity wall please see external/internal insulation (LINK) for further options.

2. Similar house type. If other houses in the area/estate have had their walls pumped with bead, then your house should be suitable. We can check our database for similar houses in your area.
3. Attic view. Sometimes the cavity may be exposed in the attic at the eaves or at the gables where you can check the walls for suitability.
4. Vents:If you unscrew a wall vent you might be able to see if there is a cavity in your wall.