Specialist anti-condensation insulation for commercial, industrial and agricultural buildings in Brentwood and across the East of England — installed by ThermoFoam, part of the Duratite Group.

Metal and fibre-cement roofs across Brentwood 'sweat': warm internal air condenses on the cold underside and drips onto whatever sits below. A 15–25 mm coat of Enverge closed-cell spray foam seals the surface completely, removing the cold plane condensation needs — the most cost-effective permanent fix available.
The foam bonds chemically to corrugated metal, box profile and cement fibre, following every ridge and trough with no fixings or framework. One application stops the drip, protects the sheet from underside corrosion, and adds real thermal performance in the same pass.


Typical published values for Enverge closed-cell systems. Full anti-condensation insulation service page →
Send us your building details and our technical team will specify the right system and a clear budget. No obligation.

Condensation stopped in a curved concrete heritage structure.

Curved Nissen-hut roof insulated for a Cornish creamery.
Closed-cell spray foam across a large warehouse-style venue roof.
Warm, moist internal air meeting a cold uninsulated roof sheet. The foam insulates the sheet itself so its surface stays above dew point — condensation simply cannot form.
Typically 15–25 mm of closed-cell foam — confirmed at a free survey of your building.
Yes — the same application encapsulates asbestos cement sheets while stopping the condensation, subject to a condition assessment.
All of the East of England and the surrounding towns and villages — ThermoFoam installs UK-wide as part of the Duratite Group. See our Brentwood area page or call 01208 832 602.