What is the difference between airbricks and the Holland Damp Proof System?
Air bricks are simply holes in the wall. They usually go straight through the wall and let air in and out of the building. Airbricks with suspended floors: When a house has suspended wooden floors the airbricks will be found close to the ground and they take care of essential sub-floor ventilation. One has to make sure there are enough airbricks and that they are kept clear so that they can prevent moisture from accumulating under the floor thereby preventing rot in wooden floorboards and joists. Airbricks in higher walls: These are there to increase ventilation of the house and form an escape route for moisture. Bathrooms often have an airbrick in them. However nowadays these usually provide inadequate ventilation especially in family homes where showers are used. Much care should be taken with opening windows in the bathroom. Bathroom airbricks can be replaced by mechanical extractors. If there is a gas fire in a room, airbricks let necessary air in for the fire. In other rooms they
