Rendering new block-work and below DPC

[If in doubt...]

Hi, first-timer hoping for help.

New small single storey extension - std cavity wall thermalite / dense block. Builder's done the shell and I'm handling internal & external finish.

For external I'm not keen on K-Rend and I prefer to paint my own colour - small / single storey will be quick and easy to maintain - and I do prefer a smoother finish if possible - although one potential plasterer has recommended rougher / tyrolene and I'm waiting for another guy to come round to quote shortly.

I'm not really wised up on render types so any thoughts / suggestions for best type so I can be more engaging with the next guy.

Also it's block above and below DPC - couldn't get bricks to match the existing ones visible below DPC elsewhere on house. I can either brick slip below DPC or I did see a comment on here that can be rendered below dpc as well provided they know what they are doing - so how can I suss if this guy knows his stuff on that front?

Not really weather facing

Cheers

 

[Mr Chibs]

Seems a faff, adding brick slips, couldn't the builder have got a close match to the brickwork below dpc?
Also brick slips with Adhesive will add thickness to wall, which will have to be worked out with render, as you won't want it flush.

Render is recommended to be 150mm (2 course of brick) above ground level, taking it all the down, can lead to damp bridging over the dpc, that said with a cavity wall, wouldn't have thought it would be a issue compared to solid brick wall.

Neighbours have recently had their place rendered in eco-rend. looks very neat... almost too neat, but the finish is good and pre-coloured.

 

[If in doubt...]

Seems a faff, adding brick slips, couldn't the builder have got a close match to the brickwork below dpc?
Also brick slips with Adhesive will add thickness to wall, which will have to be worked out with render, as you won't want it flush.

Render is recommended to be 150mm (2 course of brick) above ground level, taking it all the down, can lead to damp bridging over the dpc, that said with a cavity wall, wouldn't have thought it would be a issue compared to solid brick wall.

Neighbours have recently had their place rendered in eco-rend. looks very neat... almost too neat, but the finish is good and pre-coloured.

The house ones had stained as around 50 years old so I thought just go with a different but complimenting look rather than try and get close. Builder being a mate was able to slot me in to a tight cancellation so it was a case of just cracking on with blocks and worrying later ! There's not a lot to do - about 8 metres.

We'll have a bellcast just above DPC and I'm wondering if this way forward to render below is to temporarily put something over the DPC so stop it being bridged whilst rendering below but I wait to be corrected here.

I'm pretty set on being able to paint the render myself as I'm fairly sure one side in this happy marriage will want a change before too long

 

[^woody^]

Below DPC is very high risk for frost attack, and anything stuck on or painted on tends to come back off within a very short time.

 

[Deleted member 292770]

How much is visible below dpc?

 

[Deleted member 292770]

you can tyrolean /render/ roughcast above and below dpc.

 

[If in doubt...]

How much is visible below dpc?

At least a full block - 215mm - possibly more as its on slightly raised ground I can scrape back.

 

[If in doubt...]

Below DPC is very high risk for frost attack, and anything stuck on or painted on tends to come back off within a very short time.

That would be a concern - as long as above DPC is rendered nicely I'm not too concerned how below matches anything within reason so whatever is best.