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Winchester Loft Insulation Case Study

A recent loft insulation job in Winchester, carried out by our own team. Genuine project photograph, real detail, and an honest account of what we found and did.

Completed Knauf mineral wool loft insulation in Fulflood, Winchester
Knauf mineral wool laid to 270mm — Fulflood, Winchester

Victorian terrace in Fulflood

AreaFulflood, Winchester
PropertyVictorian terrace
Approx. ageLate 1800s
Existing insulationAround 50mm of original, compressed insulation
Loft sizeapprox. 35 m²
Problems foundThin period-era insulation over a timber roof, with a cold top floor and dark staining on the rafters where an old bituminous felt membrane was trapping moisture.
Material installedKnauf mineral wool
New insulation depth270mm (full recommended depth)
Ventilation workLap ventilation added at the eaves to clear the trapped moisture and let the roof breathe.
Time taken1 day
"Freezing bedrooms and staining we'd worried about for ages. They found the cause, sorted the airflow and insulated it properly, all in a single day. The house feels transformed."— H. Merton, Fulflood (shared with permission)

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