Yeovil's older housing stock, particularly the Victorian terraces around Princes Street and Edwardian semis in the town centre, often received spray foam insulation in the 2000s. These solid stone or brick walls trap moisture when the foam fails to allow vapour to escape, especially during the county's frequent wet winters. An insulation assessment examines adhesion to the substrate, checks for hidden water ingress along mortar joints, and tests whether the foam has started to degrade and release particles into living spaces.
We start by inspecting loft spaces and wall cavities in properties typical to Yeovil and nearby villages such as Ilchester and Martock. Thermal imaging reveals cold spots where foam has delaminated, while moisture meters confirm rising damp common on the area's clay-heavy soils. Homeowners frequently discover that previous installations ignored the need for ventilation gaps, leading to timber decay in roof voids that only becomes visible once we lift floorboards or remove sections of ceiling.
Assessment also covers building regulation compliance for older Yeovil homes. Many installations pre-date current ventilation standards, so we note where foam blocks original air bricks or chimney flues. This step prevents future issues when removal begins and ensures any new insulation meets Somerset's damp climate requirements without repeating past mistakes.
Finally we document every finding with photos and a written report that owners can show to insurers or mortgage providers. The process highlights edge cases such as foam applied over existing lath and plaster, which requires different removal techniques than modern plasterboard setups found in post-war estates on the outskirts of Yeovil.
Technician insight
In Yeovil, the thing that catches most people out with insulation assessment is how often spray foam was pumped straight onto damp stone in Victorian terraces without any vapour barrier. Once winter rain soaks the walls around Princes Street or nearby side roads, the foam traps it and rot spreads behind the plaster before anyone notices.
Hidden Damp in a Town Centre Terrace
A homeowner on Princes Street called after noticing musty smells in the upstairs bedrooms. We found spray foam applied directly to the rear stone wall that had drawn moisture from the garden slope. Assessment showed the foam had detached in several places and timber joists were already softening. We documented the damage and outlined a sequenced removal plan that protected the remaining plasterwork.
How it works
- 1
Initial Site Visit
We arrive at your Yeovil property and walk through all accessible areas where spray foam was applied, noting visible signs of failure.
- 2
Moisture and Thermal Survey
Using meters and thermal cameras we map damp patches and adhesion loss common in Somerset's older stone walls.
- 3
Substrate Inspection
We check brick, stone and timber condition beneath the foam to identify rot or salt damage before any removal work.
- 4
Report and Recommendations
A written summary details findings, removal options and ventilation upgrades needed for the specific house type.
Pricing
Upfront quote provided after the assessment visit, based on property size and access conditions.