Brick/block below dpc

[selfbuildextension]

I am almost at ground level with blocks and architect has specified bricks from ground up to dpc then rendered blocks.

Forgetting planning permission for a second, why would I not build in block entirely, the existing house is render from ground to roof.

I understand I need to have a break in the render at dpc but any other reason not to use blocks?

 

[^woody^]

Frost blows the render off, and you can't easily form a break at the DPC.

Your "architect" should have specified bricks from 225mm below ground level, not just from the ground level up to DPC.

 

[selfbuildextension]

Thanks woody,

it’s dense 7n blocks, not lightweights. I’m hoping that makes a difference?

understand regarding render, I’ve got lots of blocks here and no bricks, a lot of spare time and no chance of a delivery so was hoping I could adjust

 

[^woody^]

The blocks themselves are frost resistant, but that location is prone to frost/freeze/thaw and along with the inherent permanent dampness of the wall it makes de-bonding of render very likely.

 

[Mobo_14]

By the sounds of things using a bell cast bead above dpc and rendering the blocks underneath could be a viable option? Unless I’ve missed something

 

[23vc]

The point is that anything below dpc shouldn’t be rendered as it’s likely to fail. Normally bell cast at dpc involves render above, brick below, for exactly that reason

 

[Mobo_14]

The point is that anything below dpc shouldn’t be rendered as it’s likely to fail. Normally bell cast at dpc involves render above, brick below, for exactly that reason

Aye your right. I have seen it done though and if the OP is desperado to get it built he could probz do just that.

 

[23vc]

The one in your pic looks like k-rend above and a thinner coat of something else (sand and cement) below, maybe it got over-rendered above dpc.

 

[Mobo_14]

The one in your pic looks like k-rend above and a thinner coat of something else (sand and cement) below, maybe it got over-rendered above dpc.

When I’ve done it before usually use a mix of 6:1 building sand cement below the bell cast (dpc) and then roughcast or like you say k rend or whatever above. But I get what ye mean in an ideal world I would use blues or something equivalent