Hi, I am expanding my house and have built a basement that I will later build with leca blocks.
I would need to know more precisely how to lay the blocks in the corners and how much mortar should be between each block.
The Leca-Blocks are in size -> 19x19x59
 
Check out Finja.se. Everything you need to know.
Good luck with the construction! Johan
 
Good video! A small question though, shouldn't the basement wall be built with 25 cm blocks? I seem to recall that there are no grooves for reinforcement in the narrower blocks. However, they can be made with an angle grinder, but if it is to be filled against the wall, I would use the wider blocks.
 
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JanneL said:
Great video! A small question though, shouldn't the basement wall be built with 25 cm blocks? I remember that there are no grooves for reinforcement in the narrower blocks. Although they can be made with an angle grinder, if it's to be backfilled against the wall, I would use the wider blocks.
Yes, they exist, but I agree with you, I would also want blocks as wide as possible for a basement wall..
 
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The blocks have tracks for 2 pieces of rebar, but I would like to know a bit more specifically how much mortar is supposed to be between the blocks. I can't find anything in the .pdf files where it states how much mortar should be in between.
 
Normally, one uses 10 mm mortar between the lecablocks.
 
when I was building my basement wall, I used a mason's box to help; it distributes the mortar and makes the work easier (especially if there are long stretches without windows)
 
one course, i.e., stone + string in leca is 20cm.. i.e., 19cm block and 1cm joint.
You should set the first course so high that you get it level in all directions with the mason's line.
Mark the remaining courses on corner profiles at 20cm intervals and set the mason's line there as well.

A tip is to rent a more expensive model of a rotary laser and level the corners from the start and when you're halfway. =)
 
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