My house is a detached house with brick cavity walls, built in 1960s. It has a suspended timber ground floor. Previous owners had block paving installed around the outside, and this has decreased the ground level to DPC gap to about 100 mm. It has also covered all the underfloor airbricks, which in neighbours' houses are in the second course below the DPC. Does anyone know of a practical way of establishing adequate under floor ventilation that does not involve lifting and relaying the block paving?
Suspended timber floor ventilation
- Thread starter chives
- Start date
Sponsored Links
Thanks big-all. That looks a lot easier than taking up the entire patio. I think I'll have to lift several blocks to find the vents, and I may as well leave a gap as a plant bed. I'll follow your advice on the lip to prevent rain water.
Sponsored Links
A better bet is to make a French drain the whole length of the wall.
Then you can lower the whole surface area to a desirable 6 to 9 inches below the dpc and thereby hit two targets, one ventilation to the floor area, two a dry wall, keeping rain splashes below the dpc.
By the way, under floor ventilation only really works when the wind can suck the air from under a building, that means air bricks on all sides.
Then you can lower the whole surface area to a desirable 6 to 9 inches below the dpc and thereby hit two targets, one ventilation to the floor area, two a dry wall, keeping rain splashes below the dpc.
By the way, under floor ventilation only really works when the wind can suck the air from under a building, that means air bricks on all sides.
DIYnot Local
Staff member
If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.
Select the supplier or trade you require, enter your location to begin your search.
Are you a trade or supplier? You can create your listing free at DIYnot Local
