Insulation Installers in Wandsworth

Yes — we cover Wandsworth and all surrounding Greater London postcodes (SW18, SW17). Most surveys can be booked within 3-5 working days, with a written quote sent within 24 hours of the visit.

Wandsworth — the heart of so-called 'Nappy Valley' — is dominated by Victorian and Edwardian terraces with solid 9-inch walls. Conservation area restrictions across most of Earlsfield, Tooting Bec and Bellevue mean IWI is the practical choice for the bulk of these homes. The right choice depends on your wall construction (solid vs cavity), property age, and whether external alterations are permitted. Our free survey identifies the most cost-effective option for your specific home.

Costs depend on property size, access and the measure: loft top-ups from around £400, floor insulation £2,500–£6,000, internal wall insulation from £100/m² and external wall insulation from £110/m². Every Wandsworth quote is free, fixed and itemised after a survey — no surprises.

Loft top-ups are usually a 1-day job. Floor insulation takes 2-4 days depending on access. Internal wall insulation runs to 1-2 weeks for a full house, and external wall insulation typically 2-4 weeks including render and decoration.