Breathable insulation for Gloucestershire's period homes
We are based at Todenham, near Moreton-in-Marsh. Gloucestershire is where the company started and where most of our completed work sits.
Gloucestershire has one of the highest concentrations of pre-1919 housing in England — limestone cottages, Georgian townhouses, Victorian terraces and farm buildings, much of it listed and much of it in conservation areas. It is also cold, and a great deal of it has been insulated with materials that were never designed for lime-bound stone.
The building stock here
Three construction types dominate, and each behaves differently:
Cotswold limestone. Solid, often rubble-filled, bound in lime mortar and finished in lime plaster internally. Highly absorbent and entirely dependent on being able to dry in both directions. Cement pointing and gypsum plaster have caused a large share of the damp problems we are asked to look at.
Georgian and Regency brick. Common through Cheltenham and the market towns. Typically 215 mm or 330 mm solid brick, with elegant window reveals that a thick insulation build-up would ruin. This is where thin build-ups and selective aerogel earn their cost.
Timber frame and cob. Found across the rural north and west of the county, often with wattle-and-daub or brick-nogged infill panels. Vapour-open throughout is not a preference here, it is a requirement.
Where we work
Our base at Todenham puts most of the county within an hour. We carry out free assessments across Gloucestershire, typically within a fortnight of enquiry.
- Cheltenham
- Gloucester
- Cirencester
- Stroud
- Tewkesbury
- Moreton-in-Marsh
- Stow-on-the-Wold
- Chipping Campden
- Northleach
- Fairford
- Lechlade
- Painswick
- Nailsworth
- Winchcombe
- Tetbury
If your town is not listed, it does not mean we do not cover it — ask. We work across the UK and travel regularly.
Local project evidence
17th century Cotswold farmhouse
Solid limestone walls, cob partitions and original lime plaster, under Historic England's strictest requirements.
- U-value: 0.22 W/m²K
- Energy bills down 52%
Bedroom renovation, Upper Park Street
Bare brick walls and a retained lath ceiling, insulated in 25 mm of PerliTherm to preserve room proportions.
- Wall heat loss down 46%
- Ceiling heat loss down 38%
What a client said
"The wall now feels dry, and warmer to the touch than a similar, untreated stretch of wall. There are also no signs of discolouration or damp patches."
What an assessment involves
- Visit and inspection. Wall construction, mortar type, existing moisture problems, available build-up depth, and the condition of rainwater goods and external ground levels.
- Written recommendation. A proposed build-up, the U-value it achieves, an indicative cost, and a note on hygrothermal risk.
- Consent support. If the property is listed, documentation to accompany a Listed Building Consent application to your local authority.
The assessment is free and carries no obligation. See what projects typically cost, or check grant eligibility first.
Contact
BreatheTherm
The Old Forge, Todenham
Gloucestershire GL56 9PF
Book a free property assessment
A specialist visits your property, assesses the wall construction, and produces a written build-up recommendation with indicative costs. No obligation, no hard sell.