Thursday 20th June 2024
Durbar Marg, Kathmandu

Cavity wall insulation cost is a great way to reduce energy bills and make your home cosy. However, the upfront cost can be a barrier for many homeowners. Fortunately, you can typically recoup this cost in under five years thanks to the savings on your energy bills. In this article, we explore how much it costs to insulate your home’s cavity walls, and offer an interactive tool that will give you a rough guide as to how much it should cost for your specific property.

How does it work?

Cavity walls are constructed with two thin leaves of different masonry material (normal bricks and facing bricks), which are held together by metal ties (or wall ties). The cavity between the two leafs prevents moisture from the outer surface penetrating into the inner plastered and decorated cover. This helps to prevent the type of dampness commonly found in houses built before 1900.

When a professional approved installer comes to fit cavity wall insulation in your house, they inject one of four types of materials into the cavity through small holes drilled in the outer walls. Blown mineral fibre, polystyrene beads or granules and Urea Formaldehyde Foam are all used to fill the cavity and each has their own price tag and properties.

Before any work is started, an initial survey of your home will be carried out to ensure that it can be insulated and to determine what type of materials would be best. This is normally included in the overall price of the cavity wall insulation and typically costs PS75. It may also be necessary to repair some aspects of your home’s exterior before the work can begin.

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