damp garage

[garyo]

I have a detached garage, made from single skin block work which is rendered on the outside. There is a water tight corregated tin roof fitted over the top of wooden beams and half inch ply, with guttering all round. The walls have a DPC at floor level.

Although there's no obvious damp in the garage, The problem I have is that anything left in there - e.g. a card board box - tends to go soggy over time. A clue to the cause is that if I leave a piece of carpet or a tool box on the floor for any length of time, then a damp/wet patch forms under said item. I suspect there's no DPM under the concrete floor.

There's a good amount of ventilation under the eves, so I don't think that that's a problem, unless I should have some lower level air bricks to get some flow at floor level?

I happen to have a huge DPM and an old tongue and groove laminate floor. I was considering laying the DPM, then the laminate floor. Would this help?

What about sealing the floor with PVA then £50 of floor paint?

Thanks,

Gary

 

[OLD]

Tape a square of polythene to the floor if moisture collects under it ,its coming through the floor.Can the drainage around the base be improved .

 

[noseall]

pva is not an effective sealant against damp. it is a water based wood glue that happens to have the right cohesive properties to act as a medium between painted surfaces and water based plasters.

do not paint it on the floor, it will be about as durable as a rice pudding skin.

it can help deal with dust, but thats about it.

 

[noseall]

clicky