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Home » Reader question » Have walls impregnated against moisture with a resin-containing product?
Dear readers,
The daughter of my Thai wife bought a house in Khon Kaen 2 years ago. This appeared to be in very good condition at the time. Unfortunately, I wasn't there to take a closer look. And indeed, for several months now, moisture has started to penetrate the walls from the floor.
I thought I could solve this by having the walls impregnated with a resinous product like the one we use at home. However, the question is whether there are companies that can do this and whether anyone has experience with this?
It would be a shame to let this rot any further.
Thank you in advance.
Regards,
Jeans
Moisture through the floor that then penetrates the walls cannot be solved by impregnating walls.
So you have to tackle the moisture problem under the floor and that can only be done by installing drainage around the house and connecting it to the sewer.
Please note that drainage must be at least 60 cm deep and sloping. Drainage is for sale here in large rolls.
That's right Roy.
I had the same problem, water rising from the floor.
Later I found out that I had a water pipe leak under the floor that ran right along this wall.
Greetings Cor and good luck with it.
Impregnating a wall would only make sense under certain circumstances, if it concerns an exterior wall on the so-called weather side, due to rain.
The moisture you describe, however, penetrates from under the floor into the masonry, so that impregnating the entire wall is pointless.
It is important to know where the water/or moisture actually comes from, so that you can act on the actual problem.
Is it perhaps a leaky water pipe or drain, and what is the level of the groundwater?
Since in Thailand the masonry is usually started immediately on a concrete slab, and one often does not take any measures to prevent rising groundwater or moisture into account, this can also be a cause.
In contrast to the Netherlands, the masonry often consists exclusively of a porous material, while in the Netherlands people start with an approx.
Perhaps it also has a completely different cause, which can only be examined locally, because here most advice can only be given on suspicion.
But if the moisture, as you describe above, really comes from below, impregnation is a waste of money.
In addition to my comment above, I have the following question; is it about all the masonry, or just a certain masonry where pipes or drains of a wet room such as a toilet or bathroom are nearby?
THE south-facing walls suffer the most from sun and rain. It often rains horizontally here, where rainwater can penetrate into the walls. Injecting these often hollow concrete brick walls has no effect. This only works with bricks where the capillary effect of the brick is the cause
what I would recommend is to seal any cracks in the wall or connection wall / floor outside with a flexible sealant and to check this regularly. Sika has excellent mortars and sealants available from Thai Watsedu, among others.
Good luck with your project
Unfortunately, it is both the interior and exterior walls that suffer from it, so it will be a bit more complicated. These tips help me on the right track. Can anyone recommend a company near Khon Kaen for this problem? Would like to get rid of this once and for all.
Build in the same neighborhood so this is a good warning about precautions to take. We are located between the fields and yet sewage is provided for this fairly large residential area. Thanks for all the tips.
Dear Jean Herckens, That's why I asked if all the walls were damp and not just a certain one?
The tiling of the wall, as can be read in some comments, would at most make sense in a so-called wet cell such as a toilet, bathroom where shower water or scrubbing water can penetrate the wall work.
Your description that all walls are affected indicates that, in my opinion, this is clearly groundwater/moisture, and a surrounding tiling might be a nice decoration here, but unfortunately it will not change the final problem in any way.
As a first measure, I would check the groundwater level around the house and install a good drainage system if necessary.
On drawing moisture from the floor, then you don't just have to tackle the wall, but both, so that will be quite a job. You used to have that in the Netherlands too, but then you had a brick foundation. And the rooms usually had a wood floor. Then there was a very simple way to solve it.
Then you cut a layer of one meter from the wall that is on the foundation. one or 2 layers of one meter long. Then you lay thick plastic or a strip of roofing felt, nowadays it is a rubber-like roof covering.
on the foundation and put the bricks back in, then take the next meter until you are done and certainly no more rising damp. But if the entire floor is wet you have a big problem, at least if it is not a problem with the pipes or drain. or cover the floor in its entirety and pour a 5 cm new layer over it, but you still have to do the walls as described above. From here it is difficult to give advice. Drain?? then you can also simply dig a groove 50 deep and 50 wide that slopes slightly and fill it with gravel or broken stone where the water falls from the roof.
The soil in Thailand absorbs it quickly, or drains it away. But again from here it is difficult to estimate where the problem comes from.
Regards and good luck finding the real problem
Sorry for this one more time. if the water now comes in from outside with the heavy rain. Then stick to the outside side. Tile the regular floor tile 60X60, but with a slightly elastic tile adhesive so that it still works somewhat with the Son. and also seal the joints well with the waterproof glue. One or 2 layers is certainly enough, you can see on the inside how high the wall is wet.
Scrub the wall well and remove the loose paint parts.
Think that tiling the wall to 1 tile height is a good solution. My house is also paved all around so that there is no rising damp from the ground which connects directly to the walls. Paving also helps against mud contamination of the walls. The raised tile against the wall in the same tile looks good and also helps to protect the walls from below during downpours. Have an overhanging roof yourself, so no water against the walls and tiled and sunken water channels around the house to the drains.
Dear Jean,
You also indicate that interior walls become damp, then only drainage is needed and the only solution.
The soil in the structure contains capillaries, so to speak, the blood vessels of the soil. These capillary vessels ensure that excess water is drained away and in dry weather it is carried upwards again by the suction force of the wind.
But if there is plate formation in the ground layer, which is possible due to heavy construction traffic, not structured enough to make it ready for construction for housing, which you just see too much here, then the water will be stored under your entire floor and will sink very slowly.
You can try to install vertical drains, that is with a soil drill as close as possible to the outside wall, drill about 12 cm around, at least 1 meter deep and fill that up with gravel. If you do that first in the most humid place you can see if it works sufficiently. If it is sufficient, then drill a hole around the house and every meter.
Good luck, Roy