Substrate for sill on Leca

[dennisson]

Wondering what is usually done in this situation.. Apply mortar and fill in the tracks or place the sill (195mm) directly on the leca? Of course, with sill insulation in both cases. Obviously, I realized halfway through the last layer of masonry that I could have laid the stones down, but oh well 😖 This is an extension of 50m2, snow zone 2.

 

[larsbj]

As said, the best would have been to turn the stone, but fill with bruk it will be fine.

 

[larsbj]

Assuming it is a crawl space, how have you planned for ventilation?

 

[dennisson]

No ventilation with outdoor air. It will get ground insulation (krypgrundsiso) inside and wall insulation on the outside, negative pressure ventilation via the existing crawl space where the hygro-controlled dehumidifier is also located. 😊

 

[Maxwells demon]

Do you have a murarlåda? Reinforce and pull out a string neatly with murarlåda so you get something flat to place the sill on.
I will probably lay a sul-block as the last layer. Reinforce and cast it flat.