Foam Cavity Wall Insulation (For Commercial Only)
Foamspray Insulation provides the best foam cavity wall insulation for companies around the UK. We have been involved with the application of spray foam for over 30 years, both sprayed and injected for commercial clients only.
Foam cavity wall insulation requires an injected form of spray foam and is ideal for both insulation and stabilisation purposes. Because the foam sets to a concrete-like solidity, it is great for supporting the structure of your building while creating one of the most effective methods of insulation available.
A cavity wall consists of two skins, an inner and an outer separated by a space i.e. a cavity. The spray foam is injected into the cavity, which is even more effective than having a hollow space. Due to the structural makeup of the expanding foam material, it prevents any movement of air, reducing the ability for heat to move through the material through both convection and conduction. It keeps your heating bills down and improves your environmental footprint.
Flood Protection with Foam Cavity Walls
Spray insulation is resistant to moisture ingress and is recommended by the Environment Agency as a measure to reduce flood damage to walls. Because foam insulation is waterproof, it prevents moisture from entering your property during floods, providing some of the best protection for area prone to flood damage.
Expanding Foam Cavity Wall Application
The system is injected into the cavity in liquid form. It then finds its lowest point and begins to slowly react, rising and filling all uneven cavities forming a solid, continuous mass with no gaps. (See the video to see exactly how the foam expands in the cavity wall.)
This is replicated throughout the installation using a pre-set pattern of drilled holes ensuring a level and even fill all the way through the wall. It eliminates any gaps or voids to guarantee effective insulation.
Once installed, the foam will remain very effective throughout the life of the building, requiring no further maintenance. It’s one of the easiest ways to maintain wall insulation.
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Do Foam Cavity Wall Insulation Problems Occur?
Problems with foam cavity wall insulation can occur when the spray foam is installed by someone that isn’t qualified, or by unprofessional and inexperienced company. Foam Spray guarantee that our foam insulation for cavity walls will be effective and problem-free. We have a team of trained and qualified technicians with years of experience in installing foam insulation into cavity walls.
When mixed by someone inexperienced, the insulation can pull away from the wall and shrink back. This happens when the ratio of components in the foam insulation hasn’t been carefully measured. It has to be 1:1 in order to ensure the insulation lasts for the lifetime of the building. Foamspray ensures the perfect ratio every time.
If an amature installs foam wall insulation, it can also be too thin to provide effective protection against heat loss. While the foam does expand, it still requires a certain amount of liquid in order to fill the cavity effectively. Foamspray are not only experienced enough to know the perfect amount of spray foam required, we also use the best and most up-to-date equipment. This allows us to install the perfect thickness of insulation in every wall.
Cavity Walls and Fire Safety
We use Pirthane® ‘O’ for the cavity wall insulating system which has excellent fire resistant properties. It ensures that your insulation doesn’t pose any risk to the occupants of your home. It is fully compliant with the Class 0 surface requirements defined in Paragraph A12(b) of Approved Document B ‘Fire Safety’, to the Building Regulations 1991. When tested to BS476 Part 7 1997, Pirthane presents a Class 1 surface spread of flame and when tested to BS476 Part 6 1989, it achieves a fire propagation index (I) of not more than 12 and subindex (i1) of not more than 6.
We also use Duratherm® OS. This material is an HCFC and CFC free insulating product with a two component (1:1 ratio) foam system. It results in a rigid foam of concrete-like consistency with an approximate density of 40kg/m3. It also boasts fantastic compressive strength and so can provide structural support to your building. It presents a service temperature range of -15°C to 70°C and, when tested to BS476 part 7 produces a Class 1 surface spread of flame.
Vapour Control Layer (VCL) Safety
Our sprayable vapour barrier coatings are used in conjunction with Duratherm® OS. They comply with Class 0 regulations and therefore dry to form a flame resistant finish.