ᐅ Base plaster waterproofing: what was used and who installed it?
Created on: 18 Nov 2020 18:53
I
immermehr
Hello everyone,
we are building with a general contractor. Today, I was “surprised” to learn that the base plaster waterproofing is our responsibility.
My landscaper says that the exterior plasterer should do it. He can then guarantee the entire scope of his work. In an emergency, the landscaper can also do it.
The landscaper’s quote (about 2000€) is almost twice as expensive as the plasterer’s (1000€). The landscaper seems a bit more reliable to me.
Question:
- Who did it for you?
- With what material (black bitumen, mineral cement, etc.)?
- What is your experience? Is this work so risky (in terms of warranty) that no one wanted to take it on? I don’t want to take unnecessary risks over 1000€.
Thank you for your answers.
we are building with a general contractor. Today, I was “surprised” to learn that the base plaster waterproofing is our responsibility.
My landscaper says that the exterior plasterer should do it. He can then guarantee the entire scope of his work. In an emergency, the landscaper can also do it.
The landscaper’s quote (about 2000€) is almost twice as expensive as the plasterer’s (1000€). The landscaper seems a bit more reliable to me.
Question:
- Who did it for you?
- With what material (black bitumen, mineral cement, etc.)?
- What is your experience? Is this work so risky (in terms of warranty) that no one wanted to take it on? I don’t want to take unnecessary risks over 1000€.
Thank you for your answers.
I’m joining the discussion because this topic is also relevant to me at the moment.
Our house has already been plastered (base coat and top coat) and painted. This included painting the base plaster (plinth render). Recently, our expert pointed out that it is mandatory, when completing the exterior landscaping, to seal the base plaster again up to 5 cm (2 inches) above the final ground level (and, of course, below it). Before applying the base plaster, the house was professionally sealed all around.
Without this additional sealing, the base plaster would likely develop cracks over time.
I’m currently wondering how to deal with this in the end. Of course, we can apply the sealing up to 5 cm (2 inches) high. But what then? Is it possible to paint over it? I’m not convinced it would look very good, and honestly, I have never consciously seen this done on other houses.
Our house has already been plastered (base coat and top coat) and painted. This included painting the base plaster (plinth render). Recently, our expert pointed out that it is mandatory, when completing the exterior landscaping, to seal the base plaster again up to 5 cm (2 inches) above the final ground level (and, of course, below it). Before applying the base plaster, the house was professionally sealed all around.
Without this additional sealing, the base plaster would likely develop cracks over time.
I’m currently wondering how to deal with this in the end. Of course, we can apply the sealing up to 5 cm (2 inches) high. But what then? Is it possible to paint over it? I’m not convinced it would look very good, and honestly, I have never consciously seen this done on other houses.
F
fach1werk19 Nov 2020 21:28To be honest, I thought it looked ugly, so I went ahead and did it myself. When the house needed repainting again this summer, the painter also covered the black part. Now it’s invisible 🙂
Best regards
Gabriele
Best regards
Gabriele
Ötzi Ötztaler19 Nov 2020 21:48
Is something like this also necessary if you don’t have a basement? I have a monolithic Poroton masonry directly on the slab, and the slab is fully insulated around the edges with XPS. Is it essential to apply bitumen or a similar product on the base coat, or can you put the dimpled membrane directly on it and then add paving or splash protection?
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immermehr20 Nov 2020 19:50Pamiko schrieb:
I’m joining the conversation here because this topic is currently on my mind as well.
Our house has already been plastered (base coat and finish coat) and painted. The base plaster on the foundation wall was also painted.
Recently, our expert pointed out that during the landscaping work, it is mandatory to seal the base plaster again up to 5 cm (2 inches) above the final ground level (and of course below it as well). Before applying the base plaster, the entire house was professionally waterproofed.
Without this additional sealing, the base plaster would likely develop cracks over time.
Right now, I’m wondering how I should handle this at the end. Of course, we can apply the sealing up to 5 cm (2 inches) high. But then what? Is the sealing paintable again? I don’t think it looks very nice, and honestly, I have never consciously seen this done on other houses before. I’ve now ordered the materials from Alsecco. They will be delivered on Monday. I hope it will be warmer than 5°C (41°F) next week.
I also plan to paint the visible area with waterproof paint.
I
immermehr20 Nov 2020 20:05I have one more question:
What about waterproofing in the overlapping area between two studded membranes (with fleece)? Do you also need to seal these 15cm (6 inches)?
What about waterproofing in the overlapping area between two studded membranes (with fleece)? Do you also need to seal these 15cm (6 inches)?
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fach1werk20 Nov 2020 20:52As far as I know, the dimpled membrane only distributes the load of the backfilled stones. I don’t quite understand what you mean.
I wish you good weather for your project next week!
I wish you good weather for your project next week!
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