Seppo001
2020-02-03 11:35:53
- #1
Hello forum community,
my name is Sebastian, I am 37 years old, and my wife and I want to build a single-family house made of bricks this year.
Since my cousin is a bricklayer, we will construct the foundation slab and the shell ourselves. So far, everything is fine. However, there are differing opinions regarding the plinth design between my cousin and our architect.
The house has no basement but will be partially backfilled to a height of about 1.5 meters above the foundation slab.
My cousin recommends letting the foundation slab protrude a few centimeters beyond the masonry in this area and then forming a cove fillet there. This will then be sealed with two layers of thick bitumen coating and fabric from the foundation slab (which of course overlaps it) up to about 20 cm above the backfill. The foundation slab will not be insulated on the front side under the backfill.
Our architect wants to place a capping stone flush on the foundation slab and then let the masonry overhang. The area under the masonry overhang should then be sealed, and above that, insulation against the soil (see attachment). Although this construction is also recommended by many brick manufacturers, it is always shown without soil backfill. Here, the masonry overhang must always be about 30 cm above ground level.
I have some concerns about our architect’s version that it will really be watertight underground since the sealing is done under the perimeter insulation. I really need to make sure the protruding bricks are sealed tightly from below.
It would be great if someone could share their opinion with me.
Best regards
Sebastian
my name is Sebastian, I am 37 years old, and my wife and I want to build a single-family house made of bricks this year.
Since my cousin is a bricklayer, we will construct the foundation slab and the shell ourselves. So far, everything is fine. However, there are differing opinions regarding the plinth design between my cousin and our architect.
The house has no basement but will be partially backfilled to a height of about 1.5 meters above the foundation slab.
My cousin recommends letting the foundation slab protrude a few centimeters beyond the masonry in this area and then forming a cove fillet there. This will then be sealed with two layers of thick bitumen coating and fabric from the foundation slab (which of course overlaps it) up to about 20 cm above the backfill. The foundation slab will not be insulated on the front side under the backfill.
Our architect wants to place a capping stone flush on the foundation slab and then let the masonry overhang. The area under the masonry overhang should then be sealed, and above that, insulation against the soil (see attachment). Although this construction is also recommended by many brick manufacturers, it is always shown without soil backfill. Here, the masonry overhang must always be about 30 cm above ground level.
I have some concerns about our architect’s version that it will really be watertight underground since the sealing is done under the perimeter insulation. I really need to make sure the protruding bricks are sealed tightly from below.
It would be great if someone could share their opinion with me.
Best regards
Sebastian