How is this possible? Damp on an internal wall? – So no water ingress from blown render or poor pointing, no leaking gutters, no cracked tiles, no raised pavements above damp proof course, so what is going on? Internal walls …

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Positive ventilation system diagramatic Many of our houses are getting sealed up all in the name of energy efficiency. Draughts around doors are being sealed, windows are being replaced (often without trickle vents), chimneys are being blocked up, lofts insulated, …

Ventilation solutions for homes Read more »