Jun 28, 2014
Category: General
Posted by: davidbannon
Good news, Glenn has just dropped off the blocks I was missing.
Jan 1, 2014
Category: General
Posted by: davidbannon
Wow, the mortar additive finally arrived. 12 months after it was ordered, maybe six months after being paid for. How good is that ? All I am waiting for now is the Exterior Sealer.....
CMS - 1.12.2 - Kolonia

Laying Timbercrete Blocks

Ok, actually laying the blocks is easy, as long as you have done your preparation !

Get good strings up, ensure the surface you are laying on is reasonably clean and dry and get a good mortar bed down. Don't be tempted to make that mortar bed level or even the right height, squeezing the mortar out under the new Timbercrete block is an important part of it bonding.

I like to ensure plenty of mortar is squeezed out from underneath but maybe not so much from the 'pert', the vertical joint. The reason is that that squeezing comes from you hitting the block with a rubber mallet, the course underneath is (or should be) a day old and pretty firm. The block to the side however was probably just laid so you don't want to risk moving it too much.

As the mortar is squeezed out, grab it with your trowel and force it down in the pert. Follow up with some stabbing action to ensure its good and full, no air gaps allowed !

Your first course of Timbercrete blocks is pretty important, make sure your string line agrees with the edge of the slab. You don't want any of the slab showing beyond the blocks, similarly, you don't want any overhang.

Roughly clean up the joints (I use a modified pointing trowel) and get them close the the right shape, scrape off any excess mortar around the joints, easier now than later.

Try and work as cleanly as you can, don't leave any splashes on the blocks, windows or door frames. You will drop lots of mortar on the slab as you work, scrap it up before it sets. You will find moving it the day you laid trivial, a bit harder the next day. You'll need an angle grinder in a month's time. So, get in there while its easy.



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