X-Ray discovers that the government's advice to insulate our homes doesn't suit everyone. Heol Y Garreg Las in Llandeilo is a street where generations have lived and grown up together, families ...

The main problem with gaps in cavity-wall insulation is likely to be condensation on the uninsulated areas. ... a No 1 and No 2 size of each will equip you for most screwing situations.

If you already have issues with damp, cavity wall insulation can make the problems worse. Did they note vents, boiler flues, driveway levels, open fires, ...