ᐅ From when does the structural shell need to be dry or weather-tight?
Created on: 6 Oct 2017 04:08
M
Marchonisch
We built on a slope. The shell of the building is complete, meaning the roof and windows are installed. The plasterer is currently working, and the screed will be done next.
Today, after heavy rain, I noticed water ingress at one corner on the ground floor.
Shouldn't the shell already be weatherproof? Or only once the screed is in place?
I am really frustrated, as you can tell from the time.
Today, after heavy rain, I noticed water ingress at one corner on the ground floor.
Shouldn't the shell already be weatherproof? Or only once the screed is in place?
I am really frustrated, as you can tell from the time.
M
Marchonisch6 Oct 2017 09:51Correct, there is only an external plaster finish. Between the garage wall and the house wall, both made of cavity concrete, there is approximately 12.5cm (5 inches) of insulation. It looks like polystyrene to me.
The garage roof is currently being sealed with bitumen.
The garage roof is currently being sealed with bitumen.
M
Marchonisch6 Oct 2017 11:55Photo 1 (77) is indoors, the other shows the exterior.
How was the gap between the existing building (garage) and the new construction sealed from above?
This is a really sensitive area.
We also had difficulties at that point (our concrete carport is adjacent on one side to the house’s masonry), and it only worked well when the temporary seal was applied onto the carport roof (flat roof). This seal was also extended partway up the house wall. Attached are some pictures showing how we solved it.
I can’t provide long-term test results yet, but since this was done, no water has come in.
In your photo showing the outside, you can also see how the water runs down here.
This is a really sensitive area.
We also had difficulties at that point (our concrete carport is adjacent on one side to the house’s masonry), and it only worked well when the temporary seal was applied onto the carport roof (flat roof). This seal was also extended partway up the house wall. Attached are some pictures showing how we solved it.
I can’t provide long-term test results yet, but since this was done, no water has come in.
In your photo showing the outside, you can also see how the water runs down here.
Sorry, I missed the photo. It looks like water ran down the outside of the wall. It doesn't really surprise me that it found its way inside in the "raw state" of the wall (without plaster and base waterproofing). However, the overall situation is not visible. Was there possibly a puddle outside in the corner (near the cables)?
M
Marchonisch6 Oct 2017 13:44What exactly do you mean by base waterproofing?
Is this done by the plasterer together with the exterior plaster?
Is this done by the plasterer together with the exterior plaster?
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