Suspended Floor Insulation for Period Homes
Expertly installed without major building work
See if it's right for your home with our 60-second suitability check
Installed Since 2012
Period Home Specialists
Only a Few Boards Lifted
No Major Building Work
Ventilation Preserved
For Suspended Floors
Free Quote Service
60-Second Suitability Check
Is this the right solution for your home?
Period home with timber ground floor suspended over a ventilation void
Original floorboards can be accessed
You need minimal disruption, not a major building project
You want to reduce cold draughts and keep your home warmer
The comfort upgrade for homes with traditional suspended ground floors
We insulate beneath your original ground floor, lifting just a few boards
Your home feels warmer straight away, with draughts reduced at floor level. Underfloor ventilation is preserved, without a major renovation project.
Retrovive cellulose fibre insulation blown-in by lifting just a few boards
Minimal disruption
No need for redecoration after installation
Trusted installers
We use only our own trained installation teams
No harmful materials
Safe, eco-friendly cellulose fibre and no spray foam
Energy efficient
Up to 43% heating savings reported by customers
4 steps to a permanently warmer period home
1
We confirm your home is suitable
Usually from the details you send
2
We recommend the best approach
For your home
3
We provide a free quote if suitable
Fair, transparent, all-inclusive pricing
4
We install when you're ready
Typically 1-3 days on site
Take our 60-second suitability check to discover if your home would benefit from Retrovive underfloor insulation
How many apply to you and your home?
I want to insulate beneath the original floorboards
I have a period home (built before the mid-1960s)
The ground floor construction is timber floorboards, not solid underneath
The original floorboards could be accessed (for example, by lifting carpet or vinyl)
I would prefer to avoid a major building project
I am ready to take the next step if my floor is suitable
Data is collected and held in accordance with our Privacy Notice
Trusted by hundreds of homeowners in the East of England and North London
Warmer floors, less disruption, and a team homeowners trust.
Grace
16 December 2025
Huge thanks to the team at Retrovive; professional, timely, knowledgeable and did a great job. Our downstairs has been cold for a long time due to lack of insulation... we’re already feeling the benefit of our new insulation and couldn’t be happier with the result or working with Retrovive.
Adam Baxter
2 October 2025
Really impressed with the work carried out on my floors, the guys who came where super tidy and quick and I can already feel the benefits underfloor. The system they use is so minimally invasive. I would highly recommend.
Anthony T
18 November 2025
Made a massive difference to our cold north facing ground floor rooms with suspended floorboards... We tried everything before Retrovive: cavity wall insulation; reflective foil underlay; insulated wall paper (!); redid the loft and roof insulation - none of it made a difference but the underfloor insulation fixed it.
Abi
16 July 2025
Honestly, I've never experienced such proactive, attentive and informative communication from another company before. The installer on the day was 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.
Frequently Asked Questions
How does it work?
-
We lift just a few boards to hang our breathable membrane under the whole floor. Then we blow in our cellulose fibre insulation which packs between the joists, filling the gaps for a warm, draught-free floor.
Will this cause major disruption?
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No. We only require that the rooms are cleared of furniture before our installers arrive. Because we don't need to lift the whole floor we can often insulate a room in a single day - and we tidy up afterwards!
What is your approach to ventilation and damp?
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We keep the original ventilation below the underfloor insulation to avoid damp problems. We also remedy any existing issues with blocked airbricks - it's all part of the job!
How much does it cost?
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Most projects fall in the £2,000 to £5,000 range, depending on size and complexity. Share the address and a few details and we’ll confirm suitability and provide a clear quote, backed by our 25-year guarantee.
What are the alternatives?
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Other approaches either require the whole floor to be removed, or good access from below. Retrovive gives a guaranteed result, developed by experts, with minimal disruption and safe, sustainable materials.
Do you cover my area?
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We work across the East of England and North London.