ᐅ How can I fill gaps in a calcium silicate block wall?

Created on: 5 Jul 2024 08:24
M
Malandro
M
Malandro
5 Jul 2024 08:24
Hello everyone, I have built a limestone wall between two terraces. What is the best way to fill gaps that have formed between the stones? Because of the tongue and groove system, you can’t get in between, but soundproofing isn’t really possible this way, is it? The manufacturer states that adhesion is only applied at the top and bottom.

A wall made of light gray concrete blocks, unplastered, with slight stains and discolorations.
H
Haus Luni
5 Jul 2024 09:56
Hello,

I would use masonry mortar or lime-cement plaster.

Will the wall stay as it is, or are we planning to do something else here?
N
nordanney
5 Jul 2024 10:39
Malandro schrieb:

What is the best way to fill gaps,
Why do you want to fill the gaps? What is happening with the wall – plaster, brick veneer? Both sides? Then the gaps should already be gone.
M
Malandro
5 Jul 2024 16:57
First, the wall will be plastered, but the vertical joints are partially open all the way through at the bottom. Later, this wall will serve as a partition for an extension and needs to be soundproof and insulated against heat.
N
nordanney
5 Jul 2024 17:02
Malandro schrieb:

First, the wall will be plastered, but the vertical joints at the bottom sometimes go all the way through. Later, this will serve as a wall for an extension and needs to be soundproof and insulated.
This is the separation between two terraces. It is enough to plaster properly—making sure to press the plaster firmly into the joints.

What I don’t understand is your second sentence. A wall for an extension? Soundproof and insulated? How should I imagine this extension, because if so, you will need to comply with energy efficiency regulations, and I wonder how you plan to install the insulation on the other side of the terrace (i.e. on terrace 2). You will likely need 16–20cm (6–8 inches) of insulation as a minimum. Or do you own both sides?

Basically, what I said applies in this case as well.
H
hanse987
5 Jul 2024 19:25
Malandro schrieb:

Later, this is supposed to serve as a wall for an extension and be soundproof and thermally insulated.
Limestone on its own is not great for thermal insulation. That’s why a thick layer of insulation is always added on the outside. Have you taken this into account?