Damp through single skin wall (or up through floor?)

Well what do you want to achieve?

I single skin wall isn't going to keep out the damp, that's why houses have a cavity wall.

 

well if it's bad then you must have driving rain on that side, your only option is to use a masonry sealer like Thompsons water seal.

 

what you should of done was sealed the inside walls with a bitchimen waterseal paint, then plastered it a single skin will inevitably let the damp in, the trouble you have now is that the render is done on the inside if you seal the outside you will trap the moisture in the walls

 

yes it's possible, you can e-mail some pics to kaintheo@hotmail.com

Get some pics of the outside too.

 

what about if you roughcast the garage? Never done this myself but i think this could possibly help stop the water penetrating the brickwork.

 

how was the floor done, was a vapour barrier put down? visqueen?

 

well I,ve looked at the pics and it seems like a combination of damp at the floor abutment and through the walls.

Due to the amount I can only guess that the brickwork has been jointed badly and there is no DPC or membrane.

 

well if he has built it from scratch then his.

the bottom line is, a single skin won't keep out the damp.

 

yes,

as I,ve said, it's the wrong design to prevent damp penetration.

 

if its single skin and you cant live with the damp why not change it to a cavity. Get some lightweight block and build it up off the floor slab.If the slab is around 100 thk it should take the block no problem. Build the block up off visqueen and lap the visqueen up the first couple of block course.

 

If the problem is just the rain lashing it, then batten/membrane/clad the outside, upvc, shiplap, tiles whatever.

 

The rain soaks the wall then runs down thru it till it reaches any dpc where it will then re-appear on the surface, single skin bad idea, rendering it internally a worse idea, trying to water proof it virtually impossible.