Searching for solid wall insulation Winchester, Victorian terrace retrofit Winchester, EPC improvement Winchester?
Victorian and Edwardian terraces in Fulflood, Abbotts Barton and St Thomas often have solid brick walls, draughty floors and single glazing. A fabric-first retrofit cuts bills and boosts comfort, without damaging heritage details.
Prioritised upgrade path (best ROI first)
- Loft/roof insulation (to 300 mm+) and air-tightness sealing.
- Floor upgrades: Lift boards where possible; fit mineral wool between joists; install vapour-open membranes.
- High-performance secondary glazing or slimline double glazing (where acceptable).
- Internal wall insulation (IWI) with vapour-open systems (woodfibre/lime plasters) to avoid trapped moisture.
- Ventilation strategy: Continuous extract in wet rooms; trickle vents; consider dMEV/MVHR in deeper retrofits.
Moisture & breathability essentials
- Prefer lime render/plaster over cement to keep walls breathable.
- Add capillary-active insulation (e.g., woodfibre) on cold external walls.
- Include dew-point calculations to prevent interstitial condensation.
Typical costs (guide, incl. VAT)
- Loft top-up: £800–£2,500
- Suspended floor upgrade: £2,000–£5,000 (per room/zone)
- IWI per key room wall: £2,500–£6,000
- Secondary glazing (per opening): £700–£1,500
Fulflood Retrofit Survey:
Book a Fabric-First Mini-Survey in Fulflood, Abbotts Barton or St Thomas. We’ll map heat loss, specify vapour-open upgrades, and stage works to your budget.