Thermal cracking on my new wall :(

[kingandy2nd]

I've just noticed this on my new inner skin on my wall in a couple of different places. I assume it's thermal cracking, as the outside is just fine. On the inside it goes up 2 courses in one spot, and 3 courses in another.

Thermalite shields laid with mortar 1:6 sand to cement mix with plasticiser.

The wall is west facing and I can only assume it got baked on Friday with the hot weather causing these cracks. Once complete, this wall will be inside a garage and thus protected from direct sunshine most of the time, but while the build continues slowly it will be exposed.

I've ordered a big role of hessian stuff which I plan to drape over the wall to keep it in the shade from now on, but any other suggestions of what to do to protect?

Also what should I be doing about these sections? I could leave, repoint, or go to the extreme of taking down the offending sections and rebuilding, but I don't know if it's worth it?

Bit gutted this has happened really...

 

[23vc]

I’ve seen much worse, thermalites are bad for it, not much you can do other than doing it in really small sections with expansion joints which no one does. Don’t worry about it, and don’t shoot the messenger but it’ll probably do it quite a lot more over time.

 

[^woody^]

I've got a wall that is 4 1/2 blocks long, all the precautions done, sheltered internal not exposed and it cracked several years after being built. Worst blocks ever.

What's that 1/2 block doing in the middle of a wall? That wont be helping

 

[kingandy2nd]

@^woody^ the half block is because the end of the run is just off to the left and I’d started from the right, didn’t want the odd sized blocks on the corner so I brought them in one block.

 

[^woody^]

So where is that crack relative the the wall, near one end?

 

[stuart45]

What's that 1/2 block doing in the middle of a wall? That wont be helping

That's Flemish bond woody.

 

[kingandy2nd]

About 600mm from the end, which is a pier built in 7nm blocks on both skins