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Do you share at least one wall with a neighbor?

Part Wall Insulation

Install Part Wall Insulation

If you live in a terraced or semi-detached house, then you will have at least one wall that you share with a neighbour. This is called a party wall. If your house was built between 1950 and 1995 then there is a reasonable chance that the party wall is a cavity wall, and that the cavity is vented to the outside. This means that cold outside air can enter the cavity at the bottom and leave at the top, making the party wall cold and increasing heat loss from the house. If this is the case, then it is worth considering getting the cavity insulated. 

If you have a solid party wall, or a cavity that is not vented, then there is little point in insulating the wall as the property next door will often be heated to a similar level, and will act as an insulating layer even if it isn’t heated at all. 

Work involved

Before getting your party wall insulated, talk to us to survey your property and check that it’s suitable. Whilst many properties built between 1950-95 have vented cavity party walls not all do, so you need an assessor to check. A typical installation will require a series of holes to be drilled in your wall (from the inside), and then insulation is injected into the cavity through the holes. The installer will then fill in these holes, though since it’s on the inside of your walls you may need to do some redecoration. 

Comfort

If you live in a terraced or semi-detached house, then you will have at least one wall that you share with a neighbour. This is called a party wall. If your house was built between 1950 and 1995 then there is a reasonable chance that the party wall is a cavity wall, and that the cavity is vented to the outside. This means that cold outside air can enter the cavity at the bottom and leave at the top, making the party wall cold and increasing heat loss from the house. If this is the case, then it is worth considering getting the cavity insulated. 

If you have a solid party wall, or a cavity that is not vented, then there is little point in insulating the wall as the property next door will often be heated to a similar level, and will act as an insulating layer even if it isn’t heated at all. 

Practicalities

Since the party walls are shared with a neighbour, you will need to give your adjoining neighbours notice of your intention to install party wall insulation. Since both properties will benefit from the insulation, you may also want to discuss whether you will split the costs. Not all, party walls are suitable to be filled, so you will need an installer to come and check your cavity beforehand. 

The appearance of your home

The wall insulation will not be visible once it is installed, so won’t affect the appearance of your property. However, to install it a series of holes will need to be drilled in your in the wall from the inside of your property. These holes will then be filled in, but you may need to then redecorate to cover them over. 

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