Energy saving: treat the walls against moisture!

[Christophe]

Ah the neighbor bastard !! So you did the "low" part? It is the one which is the most humid so it is already good! Have you noticed a difference inside and on the heating?

2) Yes it is expensive: the pot of the transparent aquaplan is around 80 € for 10L I think.

The consumption strongly depends on the porosity and the quality of the support and can vary from 0,2 L / m² in the case of a dense stony structure, to 1 L / m² in the case of very porous limestone. On average, consumption can be estimated at 0,5 L / m².

It's 80/20 = 4 € per m² on average ... if you have 100m² of facade ... it's expensive yes ... but if it saves 200 € of energy per year ... it's is not so expensive!

I noticed that everything produced against humidity is very expensive (except SikaLite)! I guess it is not related to a production cost but to the gain for the customer ... pfff ... we will not change the world!

[helium]

humidity rises from the cellar?
by tearing off the paper in my son's future bedroom
I found traces of mold on the wall on the side of the cellar
(and the paper peels off very easily)
I will insulate from the outside
do I still have to treat inside?
a special undercoat of paint ...
(it will not make the house too watertight?)
and also attack the cellar (it is not huge) ?!

besides we hesitate to bring down the siding
along the staircase (outside) that goes down to the cellar?
and the cellar door?

[loop]

Hello

A cold exterior wall (or adjoining a cellar) can cause condensation.
In all cases, identify the origin of the humidity
Trapping the humidity behind a screen can have even more disastrous consequences because it will come out elsewhere.
The exterior insulation may make the cellar less cold but I doubt it because of the inertia of the soil and its temperature stabilized at 10 ° C

A+

[helium]

In all cases, identify the origin of the humidity

ok but how do you know if it comes from outside or from below?

Trapping the humidity behind a screen can have even more disastrous consequences because it will come out elsewhere.
The exterior insulation may make the cellar less cold but I doubt it because of the inertia of the soil and its temperature stabilized at 10 ° C

always okay
but then should I leave the cellar open?
do not lower the siding to the bottom
so as not to "stuck" the humidity inside ...?
or install a VMC?

[Jud]

Hi everybody,

Have you thought about draining around your house?
If you have cement or bitumen that sticks to the walls, it's not great against humidity. A simple drainage around could solve a lot of concerns and avoid the massive use of expensive and not always justified coatings.
I have a similar problem to solve and I found interesting pages on the internet. Here is one of the links:
http://www.tamaisontonjardin.net/article.php3?id_article=27

[helium]

thanks jud
but according to the electrician who spends a lot of time in the cellar (with the block and the brand new installation)
the house is healthy ...
but it has not been heated for some time (3 or 4 months)
with good insulation and heating everything will be back to normal!
to be continued

[Marina]

Hello


we are interested in buying a house made up of two parts:
one in stone, older
a concrete-coated concrete block (we don't know what's under the tapestry)
and on this part we see the humidity at the bottom of the exterior wall, a crack above a window and the humidity inside, at the bottom, the top also a little.

There is no gutter, in front of the house it is a waterproof yard, on the other hand behind it is earth with small stones.

So before insulating we have to deal with these humidity problems, which we would like to do on our own, to save a little for the rest.

But who could advise us?
There is no cellar, I suppose the concrete block part is on crawlspace, but what to do?

[Christophe]

Hi Marina, I think you should make a new topic specific to your problem, so you can put pictures and explain your concerns in more detail.

Click on the "New" button next to "Reply"

[Marina]

Thanks, I'll do it!

[the middle]

Hello,
I found this technique on the net.
It's very interesting, but it lacks explanations ...
http://www.youtube.com/watch?v=AtEv7cgFhXo