Is Your Home Suitable for Cavity Wall Insulation?

Not all homes are suitable for cavity wall insulation. It's essential to determine if your property meets the necessary criteria. Generally, cavity wall insulation is suitable for: Homes with unfilled cavity walls.Homes with easily accessible walls where insulation can be installed.Properties with brick or stone walls that have cavities.

How Do I Know If I Have Cavity Walls?

A cavity wall is made up of two slender walls that are connected by wall ties, leaving a space in between them.To find out if you have cavity walls, inspect a window or door along an external wall: If the brick wall measures over 260mm in thickness, it likely features a cavity. A narrower wall is more likely to be solid.If your house is constructed with stone walls, it's probable that they are solid, without any cavities that can be insulated. In such instances, you may want to go down the route of external insulation.We stock a wide range of External Wall Insulation (solid wall insulation) solutions for projects that are not suitable for cavity wall insulation.

Does Cavity Wall Insulation Reduce Noise?

Wall cavity insulation is not specifically designed to reduce noise pollution and heating bills. The cavity wall slabs and boards that we stock are designed to reduce the transmission of heat. Despite this, you might still experience an improvement in acoustic performance as a result of cavity insulation.Sound waves travel through the air from one material to another. In cavity walls, there is a gap between the inner and outer leaves of both external and party walls. By filling this gap, you create a barrier that the sound waves have to move through. These waves will dissipate, meaning less sound will reach the material that is on the other side of the insulation. If you are looking for insulation that reduces sound transmission, browse through our comprehensive range of acoustic insulation rolls.

Is Cavity Wall Insulation Fire Resistant?

The fire resistance of insulation materials is measured on the Euroclass scale. This scale was created to regulate the classification of insulation materials in Europe. The scale starts at A1 (non-combustible) and ends at F (combustible). Different types of cavity wall insulation have different Euroclass ratings.● Celotex CW4000 - rated E, partially combustible● EcoTherm Eco-Cavity - rated F, combustible● Kingspan KoolTherm K108 - rated F, combustible● Knauf DriTherm - rated A1, non-combustibleAn F rating on the Euroclass scale does not mean that you cannot use these products. All these slabs and boards still provide premium protection against heat transmission. If you are concerned about the fire rating of these products, you can simply use a build-up of materials that have better heat protection.For optimal fire protection, we recommend using a cavity barrier in concealed cavities. Cavity barriers block the passage of fire between cavities, containing the spread of fire to a confined area.

Is Cavity Wall Insulation Safe?

Cavity insulation boards and cavity insulation slabs are safe to use. It is a common misconception that some insulation materials, in particular fibreglass, are detrimental to health. Many people think that cutting fibreglass insulation can release dangerous particles into the air. Fibreglass cavity wall insulation is only dangerous when it develops mildew and the spores become airborne.As long as you take the proper precautions when installing (adequate ventilation and PPE), you do not have to worry about dangerous airborne bacteria. Always consult with a registered installer before installing cavity wall insulation. Any reputable installer will be registered with the Cavity Insulation Guarantee Agency (CIGA) and carry out the installation in line with building regulations.As an alternative to slabs and boards, a cavity wall insulation installer will be able to drill holes in the outside walls and inject insulation. Whilst this process is much more costly, filling cavity walls is not a DIY job.

How Imperative Is Cavity Wall Insulation in Reducing Heat Loss?

The Energy Saving Trust has reported that 35% of the heat loss in an uninsulated house occurs through the walls. Cavity wall insulation is as essential as roof insulation when improving the thermal envelope of a building.Seeing as walls are responsible for approximately a third of heat loss in uninsulated buildings, getting cavity wall insulation installed is a no-brainer for those wanting to radically decrease heat loss and energy bills. Among heat loss reduction, there are many other reasons to install cavity wall insulation. Cavity wall insulation is one of the cheapest energy-saving measures you can install. What's more energy saving results in a lower carbon footprint.

Buy Cavity Wall Insulation Batts & Boards

75mm Isover Cavity Wall Insulation Slab 36 (8.74m2/Pack)

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Cavity Wall Insulation

75mm Isover Cavity Wall Insulation Slab 36 (8.74m2/Pack)

115mm Kingspan Kooltherm K106 Cavity Insulation Board 1200mm x 450mm (2.16m2/Pack)

75mm Knauf Earthwool DriTherm Cavity Wall Insulation Slab 32 (3.28m2/Pack)

150mm Knauf Earthwool DriTherm Cavity Wall Insulation Slab 37 (4.37m2/Pack)

65mm Knauf Earthwool DriTherm Cavity Wall Insulation Slab 37 (5.46m2/Pack)

150mm Knauf Earthwool DriTherm Cavity Wall Insulation Slab 32 (2.18m2/Pack)

100mm Kingspan Kooltherm K106 Cavity Insulation Board 1200mm x 450mm (2.7m2/Pack)

125mm Knauf Earthwool DriTherm Cavity Wall Insulation Slab 37 (3.28m2/Pack)

85mm Knauf Earthwool DriTherm Cavity Wall Insulation Slab 37 (4.37m2/Pack)

85mm Knauf Earthwool DriTherm Cavity Wall Insulation Slab 32 (2.73m2/Pack)

125mm Knauf Earthwool DriTherm Cavity Wall Insulation Slab 32 (2.18m2/Pack)

100mm Knauf Earthwool DriTherm Cavity Wall Insulation Slab 37 - Pallet of 20 Packs (131.04m2/Pallet)

100mm Knauf Earthwool DriTherm Cavity Wall Insulation Slab 32 - Pallet of 20 Packs (65.52m2/Pallet)

90mm Celotex Thermaclass Cavity Wall 21 Full Fill Insulation Board T&G 1190mm x 450mm (3.21m2/Pack)

115mm Celotex Thermaclass Cavity Wall 21 Full Fill Insulation Board T&G 1190mm x 450mm (2.68m2/Pack)

140mm Celotex Thermaclass Cavity Wall 21 Full Fill Insulation Board T&G 1190mm x 450mm (2.14m2/Pack)

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