ᐅ Sealing the garage with a concrete floor?

Created on: 2 Sep 2017 08:06
T
truce
According to our architect, we should only apply the horizontal waterproofing of the foundation slab inside the house.

We have already done this on the ground floor inside the house. However, I am wondering whether we should also do it in the directly adjacent garage?

In the garage, we will have approximately 18cm (7 inches) of screed with a slope on top of 10cm (4 inches).

What are the advantages and disadvantages of using a bituminous membrane (such as Katja or Erika) in the garage, and how have you handled this in your own houses?
A
Alex85
3 Sep 2017 23:17
Why is there no fill material placed under the garage?

If you increase the insulation (XPS?), the driveway height decreases.

What is going on here?!
truce3 Sep 2017 23:17
Alex85 schrieb:
Why wasn’t fill material placed under the garage?
Because the garage is already built?
A
Alex85
3 Sep 2017 23:23
truce schrieb:
Because the garage is already built?

Oops! I wasn’t aware of that before (or I overlooked it). KlaRa is the absolute expert here when it comes to screed/floor construction, and their opinion definitely carries weight – it comes down to the same level.
KlaRa4 Sep 2017 19:35
This actually results in a step leading to the utility room.
In this case, an insulation layer is not a solution. You are merely shifting the height difference problem towards the garage entrance. For you, climbing the step will probably not be an issue.
For your car, possibly yes... (just joking).
If the garage and the house were designed as a single unit, the height issue raises the suspicion of a local planning error!
However, it is not that unusual to intentionally include such a step between a carport and a house.
With an enclosed (meaning: protected from weather) garage, on the other hand, it is not typical.
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Regards, KlaRa