| Defects | Remedial work |
No damp-proof course in walls | Inject or render walls with damp-proofing solution |
No damp-proof membrane under floor | Place damp-proof membrane on concrete slab with screed over or if replacing floor construct new concrete slab with damp-proof course underneath. |
No/insufficient roof insulation | Insulate attic space with a minimum of 250mm quilt insulation. |
No/insufficient wall insulation | The most popular types of insulation systems are (i) internal walls - dry lining with plasterboard and vapour check (ii) blown mineral or cellulose fibre or polystyrene beads in the cavity and (iii) rigid external insulation with render or brick finish. |
No cylinder insulation | Insulate externally with insulation, vapour check and render finish. Insulate hot water cylinder with equivalent of pre-insulated type, 35mm PU foam. |
Single-glazed windows | Replace with double-glazed low emissivity windows. |
No draught sealer | Weather-strip windows and doors. Integrate trickle vents to windows to provide sufficient ventilation to avoid condensation. Retain window shutters and lined curtains on older houses. |
Draughty floor boards | Seal joints between floor boards or put a good underlay under carpets. |
Central heating | Install efficient central heating system. If already installed, evaluate and upgrade to include improved efficiency boiler and modern controls. |
Open fires | Close off chimneys when not in use with a patent chimney damper ensuring that there is adequate room ventilation. |
