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DIY Forum >> Building Questions >> What's this wall coating?
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Message started by Natedog on Jan 22nd, 2022, 11:19am

Title: What's this wall coating?
Post by Natedog on Jan 22nd, 2022, 11:19am

Some of the walls of my workshop have got this very thin coating on them, that sort of looks like render.  Any idea what it might be?  It was built in 1961 if that helps?

[gallery]Natedog/1642850272.jpg[/gallery]

[gallery]Natedog/1642850273.jpg[/gallery]

Title: Re: What's this wall coating?
Post by woodsmith on Jan 23rd, 2022, 9:46am

Looks like Stucco from the pictures albeit a very coarse version.

Title: Re: What's this wall coating?
Post by Natedog on Jan 26th, 2022, 3:02pm

The coarse looking stuff is lichen or similar growing on it

Is stucco just like runny render?

Title: Re: What's this wall coating?
Post by woodsmith on Jan 27th, 2022, 9:58am


Natedog wrote on Jan 26th, 2022, 3:02pm:
The coarse looking stuff is lichen or similar growing on it

Is stucco just like runny render?


No, when it’s this rough it’s often been sprayed on. If you search for roughcast you will find a video showing how they do it. Alternatively they apply a render and flick aggregate into the wet surface.

Title: Re: What's this wall coating?
Post by Natedog on Jan 30th, 2022, 4:34pm

ah, i know what you mean.  our house is done like that.  this stuff on the workshop is actually flat and sort of smooth - it's just hard to photograph with the lichen growing on it

I had a play, mixing up some SBR that was in the garage with some grey cement powder.  horrible stuff to paint on, and nothing like the same colour, but does give the same sort of finish.  hoping that with a couple of coats of paint on the top it should all look the same

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