Cavity Wall Insulation

With leading brands such as Kingspan and Rockwool cavity wall insulation, our comprehensive range includes rolls, slabs, and cavity boards – all designed to cut heating costs. Discover our products for unmatched energy efficiency, better eco-friendly credentials and long-term savings.

Explore our range of insulation for cavity walls

Superglass Superwall 36 Cavity Wall Batt

Superglass Superwall 36 is a British Board of Agrément (BBA) approved, non-combustible glass mineral wool insulation cavity wall batt. Designed to provide thermal insulation in full or partial fill in new external masonry cavity walls.

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URSA CAVITY BATT 32

URSA CAVITY BATT is a semi-rigid glass wool slab treated with a water repellent additive.

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URSA CAVITY BATT 35

URSA CAVITY BATT is a semi-rigid glass wool slab treated with a water repellent additive.

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Unilin Cavity Wall (T&G)

Thin-R Partial Fill Cavity Wall (T&G) builds to a system thanks to its engineered tongue and grooved joint and pre-formed corners, ensuring insulation continuity and minimisation of thermal bridging.

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Unilin Cavitytherm CT/PIR

CavityTherm is an innovative built-in insulation for traditional walls that achieves passive level U-Values as low as 0.12 W/m2K with excellent thermal bridging detailing in cavities less than 150mm wide.

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Unilin Safe-R SR/CW

Safe-R SR/CW Partial Fill cavity insulation for traditional masonry walls, achieves excellent U-Values whilst maintaining a residual cavity, offering protection from wind driven rain.

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Unilin XtroLiner XO/CW (T&G)

XO/CW (T&G) is an innovative partial fill wall insulation system incorporating robust facings, engineered jointing details, performed corners and a certified lambda of 0.021 W/mK.

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Finding the best cavity wall insulation

Not sure what type of wall insulation you need? Well, if your building was constructed post-1930s and the brickwork is presented on its long side, rather than an alternating long-short pattern, chances are it has cavity walls. Given all the boxes are ticked, cavity wall insulation is a great option for insulating your property. Here’s what you need to know before you buy:

Choosing the right insulation material

The best cavity wall insulation for you will depend on a few factors. This includes choosing the right material and form, which you’ll need to consider your climate conditions and therefore your thermal performance needs, as well as cavity wall insulation cost considerations. With lots of options, it’s best to chat to a specialist to find the best fit:

Mineral wool fibre: Can be made from stone, slag, and molten glass. It’s cost-effective and easy to install.
Sheep’s wool: An eco-friendly option with properties similar to mineral wool.
Rigid insulation boards (PIR): Excellent for heat retention and moisture resistance.
Polystyrene beads: Lightweight, durable, and budget-friendly.

Types of external cavity wall insulation

Cavity wall insulation slabs are ideal for flat surfaces requiring coverage, offering thermal and acoustic insulation, water repellency, and fire resistance.

Rolls are perfect for uneven surfaces or around obstacles like pipes, providing effective heat insulation and sound absorption. However, they can require additional fixtures like insulation supports to prevent movement, so make sure to keep that in mind.

Benefits of insulating your cavity walls

There’s numerous advantages to ensuring your property is properly insulated. The most common reason why people wouldn’t get their cavity walls insulated is because of the expense. However, in the long-run, the investment is worthwhile, and should essentially pay for itself. Here’s our favourite benefits:

Energy savings: Reduces heat loss, meaning your property is more comfortable – lowering the amount of money spent on energy bills.
Environmental impact: Less heating needed means a smaller carbon footprint – great news for your business and our planet!
Mould prevention: Limits moisture passing through walls, reducing condensation and mould growth.

Ready to insulate your commercial space? Speak to our specialists today.

Frequently Asked Questions

Does cavity wall insulation cause damp?

Many people believe that cavities should not be filled as it could lead to damp bridging. However, this is a very small possibility. Where water penetration does occur, this is usually due to defects in the construction of the property and not due to the faulty or inappropriate installation of cavity wall insulation.

How much does cavity wall insulation cost?

Typical costs vary depending on the size of your building, and of course, the type of insulation material you choose. We have a wide range of materials, ranging from premium products to more budget-friendly options.

How long does cavity wall insulation last?

Cavity wall insulation generally lasts about 25 years. However, its longevity can be influenced by the quality of the materials and the standard of installation.

Cavity Wall Insulation

Explore our range of insulation for cavity walls

Superglass Superwall 36 Cavity Wall Batt

URSA CAVITY BATT 32

URSA CAVITY BATT 35

Unilin Cavity Wall (T&G)

Unilin Cavitytherm CT/PIR

Unilin Safe-R SR/CW

Unilin XtroLiner XO/CW (T&G)

Choosing the right insulation material

Types of external cavity wall insulation

Benefits of insulating your cavity walls

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