Removing render

Jul 21, 2004 2 Replies

Rate this thread:

David 22 years ago

> Hope someone can give me advice. I have a terrace Victorian 2 up 2 down. I
> bought this with rough render half way up and then stone cladding on the
> first floor! Well it was cheap....
>
> I had a small patch of damp on the front, and assumed this was the rendering
> over the DPC (not so naive - I have a Certificate to say damp proofed from
> company - now bankrupt) but when I chopped away a section of rendering there
> is no evidence of injection holes for a DPC, and very little mortar on the
> bricks either. The mortar that is there is very soft.
>
> I am now thinking I should chop off all the rendering, and cladding and
> repoint then inject a DPC. So a couple of questions I cant find help with in
> the DIY books.
>
> 1 - How deep should I remove the soft mortar in my solid 9" walls. The books
> say half and inch, but the mortar is very crumble and soft all the way
> through the joint.
>
> 2 - Will I end up with a nice brick finish? If so how effective are the
> waterproofing compounds I can paint on to offer some protection from
> penetrating damp? If the bricks are a bit tatty I am thinking I can repaint
> with weather proof paint anyway. I don't want render or cladding again!!!
> Whaddaya think??
>
> 3 - How long do I have to leave it all before I can inject the DPC? >
> Any advice/stories most welcome.
>
> Thanks

Vote

N. Thornton 21 years ago

In short David youve got the wrong idea entirely. Doing this will create you a lot of problems down the line. Suggest asking folks here:

formatting link

explain more nother day if you want.

Regards, NT

Vote

Cicero 21 years ago

==================== The previous damp-proofing treatment might have been done entirely from the inside which would explain the absence of injection holes. I'm not sure if this is considered good practice but I believe it does happen.

Removing the old render is very unlikely to give you a 'nice brick finish' because the surface of the bricks will almost certainly be damaged to a greater or lesser extent. They will look very unsightly.

Raking out the old mortar and re-pointing might not be necessary IF you re-render and this may be your only realistic option. A possible alternative would be to remove the render and treat the damp and then either fix uPVC cladding or tile cladding. I think render would be best because it's good for about 50 years if done properly.

I had my house done early this year (remove all render / re-render). It looked a complete eyesore when the render was off but looks very smart now with two coats of paint.

Cic.

Vote

Join the Discussion

Have something to add? Share your thoughts — no account required.

Didn't find your answer?

Ask the community — no account required