It is an internal wall. not raising or falling damp as it is about 1 metre from the floor and is only a foot high and is creeping across the wall. what can i do?
2007-05-08 05:29:43 · 6 answers · asked by Graham M 1 in Home & Garden ➔ Maintenance & Repairs
Our house was built in 1650 so we have salts in most rooms at some time over the years.
It could still be rising damp even if it just shows up 1 metres high, its just found somewhere to track out through the plaster.
PVA sometimes work to hide salts that have stopped, but it will not stop salts if they are still coming out of the wall.
The BEST solution is to let the wall breath and use lime based paints. Most people see this as too much trouble so use either PVA or a damp seal. The problem with those sealants is they can often just move the point of evaporation to the end of the pva - the salts find a way around the seal.
Another solution is to strip the plaster off, black tar the stone or brick & push sharp sand into the tar while its wet, then replaster the areas. This is a permanent traditional solution used for 100's of years that we've used to good effect.
2007-05-08 21:30:44 · answer #1 · answered by Michael H 7 · 0⤊ 0⤋
Next time you decorate get some watered down PVA and seal the affected area.
I would tend to use a few coats letting the coats dry before your out the next one on.
Sometimes having a PVA seal affects the texture of the paint, so it may be worth doing the whole wall.
2007-05-08 05:38:08 · answer #2 · answered by south_cheshire_cat 2 · 0⤊ 0⤋
Check it is salt! Taste it ... I, serious
If it is then Wash down with diluted vinegar solution - say 500 mills in a bucket
Leave for a couple of days
If needed do it again .. but no more than one repeat
If it is still coming through there MUST be water getting in some where
2007-05-08 05:40:15 · answer #3 · answered by SPARKFISH 4 · 0⤊ 0⤋
you do not get effervesent salts in an internal wall ....taste it ..it wont harm you ..whats on the other side of the wall?...have you got a pipe in the wall?..do a bit of investigating
2007-05-08 07:16:49 · answer #4 · answered by boy boy 7 · 0⤊ 0⤋
hi, i got this problem, seen it for years. i havent found any thing that works. tried many many things.asked many people so i will keep watch.
good luck.
2007-05-08 08:29:09 · answer #5 · answered by Anonymous · 0⤊ 0⤋
Yes as south-ch said, or you can use UNIBOND
2007-05-08 05:45:48 · answer #6 · answered by bty937915 4 · 0⤊ 0⤋