Retrofoam Wall Insulation

RetroFoam™ is a world leading next generation foam insulation specifically designed to provide cavity wall insulation. It is ideally suited for  buildings of timber frame construction which have been traditionally "hard to treat" - this is achieved by  injecting the foam  into the stud cavity rather than the cavity between the internal timber frame and the external wall. 

 The unique formulation allows its application even when other insulation products such as mineral wool exist. Its use, however, is not entirely limited to external walls, as it can be used in internal stud walls to improve their acoustic and fire retarding qualities.

The product can also be injected directly into the wall cavity itself. Injected under pressure in a shaving foam consistency, RetroFoam™ seals all the air leakage paths that exist due to deteriorated insulation, lack of insulation or where the original installation process has been less than effective.  

It is widely recognised that up to 35% of the heat produced in the home is lost through the external wall of a property which, not only is costing you money every month, it’s also having a negative effect on the environment. As we are living in an age where we are all looking to save money and also reduce carbon emissions by using RetroFoam™ we can all play our part.   

RetroFoam™ was introduced into the UK from the US in 2010 where its unique, innovative technology has been researched and developed over 35 years of practical experience in the marketplace. The results of this work have culminated in the delivery of a cost effective insulation solution to homes and businesses worldwide through a network of highly trained technicians.  

A major benefit of RetroFoam™ over other cavity insulation options is that it does not break down or sag within the wall structure, in fact it will last as long as the building does. More importantly however, the alternative to using RetroFoam™ as a retrofit option in timber frame buildings is to remove the existing plasterboard wall boards and skirtings around the perimeter of the building, strip out the old insulation, replace with new insulation and refit everything back together.

This process is time consuming, costly, disruptive and very messy especially in rooms such as kitchens and bathrooms where all fixtures need to be removed.


RetroFoam™ is a plastic foam containing millions of tiny air cells. Within minutes of injecting the liquid foam into the wall cavity, it sets to form a firm, resilient filling, containing millions of tiny bubbles of still air. These act like pockets of air trapped between the feathers of a duck, which act as insulation within the wall cavity, preventing airflow and heat loss. Once installed, RetroFoam™ insulation will go on working for decades with absolutely no maintenance.

To ensure peace of mind RetroFoam™ is backed by a lifetime product guarantee and all work carried out by our technicians carries an insurance backed guarantee.

We are happy to provide full details on request. We are entirely focused on delivering not only a truly premium product but also exceptional customer service.

The Retrofoam Installation Process

The RetroFoam™ installation process is completely hassle free. After the initial client contact we arrange for a free, no obligation site survey to be carried out by one of our trained surveyors. Our surveyor will establish the wall construction, work out areas and prepare a quotation. At this stage our surveyor will be happy to explain the installation process and answer any questions you may have. If the quote is acceptable we will arrange a suitable day to carry out the installation.

On the day of the installation our specialist technicians will arrive and prior to commencing one of the team will inspect your home with you to take a register of any existing damage to the property. This register along with photographic records will be retained by us.

A skilled technician will establish the build type of your home and will use a stud detector to locate the structural timbers. Various quality assurance tests are carried out and records are kept of the events of the installation. Depending on the layout of the property it is sometimes necessary to isolate the power supply. This can be assessed by the technician.

The installation process will be carried out from inside the building. 20mm holes will be drilled on the inside face of the plasterboard to suit the construction type.The foam is then injected through these holes directly into the space in the internal stud. This ensures minimal disruption to the homeowner.

We work to very exacting standards paying particular attention to details such as window sills and walls ensuring they are cleaned off immediately after drilling so that no staining occurs from the dust.

Once the installation is complete all injection holes will be filled and decorated ON REQUEST ONLY. All residue of foam on the ground can be washed away with water as the product is fully bio-degradable. A final inspection is carried out with the homeowner to ensure that all the work has been carried out to a high standard.

The whole process generally takes a day but on larger properties it can take a little longer. The cure time for the foam is normally around 72 hours although this may vary slightly at different times of the year.

Shortly after the installation has been completed you will receive your guarantee and also a courtesy call from our call centre. We value your feedback and constantly strive to improve the service we provide and can only do this with your help