Crumbling brick under render with pic

[coop5]

Hi all.

I've searched this and have found conflicting info.

I am removing old render ready for a new silicone render system.

Anyway, after removing some damaged render (from ivy) I am left with several bricks which are crumbling, the ivy had grown up the mortor joints too.

Now as this is getting rendered can I just repoint and put a scratch type coat over all the damaged bricks?

Or will I need to replace the damaged brick?

Thanks

 

[tomfe]

Since you are re-rendering have you thought about external wall insulation?

 

[coop5]

Yes mate. I've gone for insulated plasterboard instead.

Thanks

 

[vinn]

If you are going to re-render with the correct 3:1(4:1) sand & lime render then just dub out the patchy bricks before doing your scratch coat. TBH, it looks OK to scratch and render no pointing or dubbing needed but thats a site call.
Galv. nail some metal mesh over the crack.

 

[tony1851]

Galv. nail some metal mesh over the crack.

Wouldn't that rust after a bit, causing future problems?

 

[vinn]

Not necessarily, if the rendering is done correctly. Exposed metal bead is the most prone to rusting.
The OP presents as a competent person so I didn't offer such details as SS mesh etc. I presumed he already knows about these things.

However, you have a point but its the OP's call if he wants to do anything about the crack.

 

[tomfe]

It's very unusual to find ss eml used unless it's speced by someone with money.