Rafter insulation in Farnham
We fit rafter insulation for homes in Farnham and across Surrey, starting with a free survey and a fixed written quote.
Jobs in GU9 and GU10 are all within our normal area, in the Surrey council area.

Where we work around Farnham
As the crow flies, Farnham is roughly 13 miles from Woking.
Other towns close by include Godalming, Camberley, Haslemere and Guildford.
| Postcode districts | GU9, GU10 |
|---|---|
| Council area | Surrey |
| County or area | Surrey |
What is rafter insulation?
Because the whole roof slope, the gables and the party walls now have to be insulated, this costs much more than insulating the floor and saves less heat for the money. We check the roof underlay first: a breathable membrane and a felt with no ventilation gap need different build-ups to avoid condensation. More about rafter insulation.
- Vapour control layer where the design needs one
- Rigid insulation between the rafters, joints taped
- Insulated plasterboard lining where specified
Why book with us in Farnham
We measure before we quote
Existing depth, joist spacing, wiring and the tank are checked, not guessed.
Plain-English advice
We explain what we find in plain English, and say so when nothing needs doing.
No pressure selling
You get everything in writing and decide in your own time.
Clear contact details
Your quote says who to call with questions before, during and after the work.
How much does rafter insulation cost in Farnham?
Part of this work can be zero-rated as energy-saving materials until 31 March 2027, and part is standard-rated. If VAT applies, your quote shows which is which.
Building regulations in England
In England, a loft insulated across more than half its area should reach a U-value of 0.16 W/m²K. Insulation alone is not usually notified to building control. How the rules work across the UK.
Questions about rafter insulation in Farnham
Can you visit Farnham outside working hours?
Ask about early, late or weekend appointments when you get in touch, and we will tell you honestly what we can offer.
How do I pay for work in Farnham?
Payment terms are set out on your quote. We never ask for payment on the doorstep or in cash.
Will I get a written quote for work in Farnham?
Yes. Every quote is in writing with the work, the price and what is included, so you can compare it properly.
Will it cause condensation?
It can if the build-up is wrong for the roof. Old bitumen felt needs a ventilation gap behind the insulation; a modern breathable membrane may not. We check before we design it.
Can I use the loft as a bedroom after rafter insulation?
Insulation alone does not make a loft habitable. Fire escape, stairs, floor strength and headroom all come into a conversion, which needs building control.
