Welcome To

JSJ Foam Insulation Ltd

Air Seal

your property from the cold

Energy Savings

save on your heating bills

world wide success of icynene

world wide

There an increasing trend in the use of spray foam insulation in the UK and across the globe. Find out why...

efficient v inefficient insulation


ICYNENE open cell and closed cell spray foam insulation products both insulate and air seal homes and commercial buildings in one step.

best quality badge

award winning

The Icynene insulation system is the most accredited insulation in the marketplace with worldwide acknowledgement of its exceptional performance.

JSJ Foam Insulation Ltd

Icynene Spray Foam Insulation

Icynene spray foam insulation beats traditional forms of home insulation in terms of price, effectiveness, longevity and ease of application.
Icynene spray foam insulation expands to 100 times its volume in a matter of seconds, creating a superior, airtight energy efficient insulation.
Icynene spray foam insulation not only reduces air leakage from your home and consequent heat loss, it is also effective at controlling sound via it’s unique, airtight composition.

page marker image

save money on energy

Save up to 50% and your heating bills

page marker image

cold draughts

Eliminates costly air leaks from your house

page marker image

constant temperature

Eliminates costly air leaks from your house

page marker image

from the cold

Energy Efficient Insulation

Facebook Reviews

Daniel Martyn

JSJ have recently completed a full insulation of a large attic space in my home. There are 2 things to note working with the company. First is the Icynene product itself, which having submitted our first gas meter reading since it was fitted we have seen a 43% reduction in our monthly direct debit averaged over the year. Secondly, and equally as important, it is the standard of service that they provide. It is clear that the company as a whole take great pride in their work and their customer service. I can honestly say that after 2 days you wouldn't have known they had ever been there, apart from the house being significantly warmer!

Rosie Creyke

We had our roof space insulated last year and saw a reduction in energy bills of 20% over the winter so following on from that, we had our first floor walls insulated three weeks ago to make our old draughty house properly cosy. We haven't switched the heating on upstairs yet and only a couple of times downstairs so I'm looking forward to further reductions in our energy bills! It is a lovely cosy house now. Also, it is a pleasure to have Jim and his crew in the house - very tidy and enthusiastic about the product.

Kevin Wood

I've seen these guys in action. Amazing work and filled every nook and cranny for an air tight sealed home.

Shona Pearson

Exceptional service from JSJ Foam Insulation during and after the install of Icynene under my floor. My property is an old tenement flat, cellar underneath, so it can be drafty to say the least. I've noticed the flat is significantly warmer since having this product installed.

Roddy MacInnes

Great product and service to match, always a pleasure to deal with.

Susanne Stevenson

The team were an absolute pleasure to work with from start to finish. Each one of them was passionate about what they did and in delivering excellent customer service. Our main reason for getting icynene insulation in our attic conversion, apart from having a warmer home and saving money, was to ensure our young baby would be warm enough through the night to be moved into his own room. Despite reading all the wonderful testimonies I was slightly sceptical, not believing such dramatic improvements would be achieved in OUR old house. Susan and Jim took the time to explain things and answer my questions, making sure I was completely happy before we went ahead with the installation. To make sure our bedroom is warm enough for our baby we have a room thermometer and I have already witnessed a marked improvement in the heat retention of our home. I can actually see the difference the insulation has made and no longer do we rush to put the heating on in the morning. The heating, in general, has been on much less and I our son has also been successfully moved into his own room. I am looking forward to seeing the difference in our fuel bill.

Brian Watters

The level of service from enquiry to installation is second to none. We had our ground floor joists insulated and the guys made light work of challenging conditions, going above and beyond to make sure 100% client satisfaction....which we are! Would not hesitate recommending to family and friends Looking forward to feeling the warmer benefits this winter Thanks very much to the team at JSJ Foam Insulation

Peter Mcgeechan

I was vey happy with the job they did on my barge. I'm looking forward to my first winter knowing it's going to be warm. All the other bargees were very impressed with it also. I can thoroughly recommend JSJ.

Paul Harris

Fantastic company! Standard of service and workmanship first class. Spotless clean with full coverup ! Absolutely over the moon with job and product , many thanks to whole team leaving my workshop as you found it but much much cosier. I will be using again for my own contracts !!!

Special Offer

  • 1

    Special Offer

    We currently have no special offers. Come back to check at a later date to see what offers we have.

Why Choose Icynene?

a rated energy saving insulation

Although it’s behind the walls, choosing the right home or commercial building insulation can help you save up to 50% in heating and cooling costs.

protecting your home and keeping it comfortable

Whether you’re building a new home or renovating your existing home, the right insulation plays a critical role in providing protection and comfort for you and your family.

air quality

Icynene® spray foam insulation provides an air barrier and helps protect against the introduction or increase of pollutants such as dust and dirt, mold and moisture, carbon monoxide, and pollen – and helps to improve indoor air quality (IAQ).

environmentally friendly

Icynene is a water-blown spray foam insulation absent of toxic chemicals or harmful elements or synthetic blowing agents. It contains no ozone-depleting substances and doesn’t give off gas over time.

Save with Icynene Spray foam insulation

up to 50% energy savings

Average Savings on Energy Bills

3 years average payback
3 Years

Average payback from Icynene insulation

40% average air leakage in most homes

Energy loss due to air leakage

Icynene expands 100 times its original size on application

Icynene expansion to seal gaps

up to 50% Home Energy Savings

Icynene® spray foam insulation is a premium product that pays for itself quickly. By providing U-value insulation as well as air sealing, it cuts your home’s energy loss.

Interested in our offers?

Fill in our contact form and we will get back to you.

*we will not share your information with any other companies. JSJ Foam Insulation fully respects your privacy.