High performance Natural materials Minimal disruption
Underfloor insulation
for period homes
We retrofit insulation below suspended timber floors
"These guys really know their stuff! Excellent service and good, environmentally friendly products used. Highly recommended!"
- Nev Wood, Google review
5.0
Google customer reviews
Don't suffer another cold winter at home
With Retrovive underfloor insulation your period home can enjoy modern levels of insulation.
Our high-performance system is installed underneath draughty, timber suspended floorboards with the minimum disruption. The Retrovive system is safe, foam-free and cost-effective.
Trusted by hundreds of homeowners in London, the South and East of England since 2012.
The Retrovive difference
Retrovive underfloor insulation is expertly installed, minimising disruption to your home. By lifting only a few floorboards we insulate the whole room with cellulose fibre, leaving your home feeling much warmer.
Energy efficient
Up to 43% heating savings reported by customers
Minimal disruption
No need for redecoration after installation
No harmful materials
Safe, eco-friendly cellulose fibre and no spray foam
Trusted installers
We use only our own trained installation teams
Retrovive underfloor insulation system
Cold air provides important ventilation under your floor but, without insulation, it sucks heat out of your home and makes your floors cold
From Victorian times to the mid-20th century, houses in the UK were built with a space under the floor to isolate the rooms from the damp ground. This space is kept ventilated by airbricks, which means cold outside air is blowing everywhere underneath, just a floorboard-thickness beneath your feet.
This presents two problems:
Firstly, any warmth in your floorboards is simply lost to the cold air beneath, making your floor feel cold and impossible to heat. Carpets quickly lose their warmth to the floorboards they are in contact with.
Secondly, floorboards themselves do not create an airtight seal, sending chilly draughts up into the room. If you imagine adding all the gaps in your floor together it would be equivalent to having a whole floorboard missing. That’s a very large, draughty hole - like having a window open all the time!
Retrovive insulation keeps the cold below and your house warm
We insulate your floor by packing insulation tightly below the floorboards, preventing heat loss from the room and completely eliminating those cold draughts.
Firstly we fit a ‘breathable’ membrane below the floor joists at the right depth to hold the insulation and then we fill between the joists with our high-performance cellulose-fibre insulation. This is blown in under pressure to pack it tightly into all the corners.
We are careful to keep the ventilation airgap below the insulation, as shown below. This is still important to make sure the damp ground remains isolated from the room and timber floor as before.
Instant comfort - and cost savings twice over
Retrovive brings cost-saving benefits in two ways. Firstly, the layer of insulation holds in your heat, so you use much less energy to keep the temperature up.
Secondly, without draughts you feel comfortable at a slightly lower temperature, so you could turn the thermostat down a bit as well. So, more heat saved and lower fuel bills.
With Retrovive, you can keep the heat in! Make your home comfortable and save money as well. Find out more by speaking with our knowledgeable team today.
Retrovive is the best solution for retrofit underfloor insulation
Throughout our years of experience with industry and homeowners we have developed the Retrovive system that achieves all this by lifting just a few boards. Unlike other approaches we don’t need to take up the whole floor, meaning we can often insulate a whole floor in a day - without even removing the skirting.
Plus, our blown-in insulation method leaves no gaps, unlike alternative methods where sheet or roll material is cut to an approximate fit.
Getting a quote is simple
We provide a free quote service. Often this can be based on information you provide including your address and the measurements of the rooms. Sometimes we will visit you and the property to understand your project in more detail.
Our quote is fair and transparent and includes all materials, travel and our Warm Home Guarantee.
Installation with minimal disruption
Because we lift only a few floorboards, we can often insulate a whole floor within a day. We return the room to how it was without needing to remove skirting boards.
Our trained installer teams are courteous and considerate and customers love having us around. And we always tidy up afterwards!
Long-term comfort & cost savings
Insulating your floor benefits you forever more. The difference you'll enjoy is not only comfort - insulated homes take less energy to keep warm, so you'll notice the effect on your heating bills every month.
Take the first step towards a warmer home by contacting our expert team today.
Retrovive customer reviews on Google
Abi
July 16, 2025
Honestly, I've never experienced such proactive, attentive and informative communication from another company before. The installer on the day was also fantastic, explaining what he was doing, asking us questions and showing us the work as he went along. Such a good team. I can't recommend them highly enough.
Clare Carter
February 13, 2025
Retrovive came in December 2024 to insulate under the floorboards of the living room, dining room and hallway in our Victorian terraced house. The team were very friendly and did excellent work, causing minimal disruption - they seemed to take real pride in doing a good job...
Rebecca Bradley
February 7, 2025
Our living area has been transformed! Having been used to wafts of cold air rising through the floor, the work of the Retrovive team has felt revelatory, with the space now cosy and the floor comfortable to wander around on. The team were friendly, professional and efficient...
Benjamin White
April 29, 2025
We were particularly happy with the attitude and expertise of the on-site Retrovive insulation fitting specialists during the job which was completed in the time specified. I would really recommend this company.
Anthony T
February 11, 2025
Really pleased with the result of the underfloor insulation added by the Retrovive team. We now have a warm room and has completely transformed that end of the house. Would highly recommend.
Kate Cooper
January 29, 2025
The team carried out work on our property in 2023. They were thorough and the job was carried out well from start to finish. We enjoyed having them around and it has transformed our house. Thank you.
