rendering prob please help someone


Postby hilly » Tue May 29, 2007 5:01 pm

Hi im a trying to render some walls in my house and ive helped on a few jobs and it looks so easy (how fooled was I ) anyway ive got my mix done and the render on the wall but in some areas it seems to crack and then fall off the wall.
I have pva'd the wall but this has not helped so any help would be good. Also could I be pushing the trowl to hard against the wall i.e do you just lightly put the mix on then flatten after????????

cheers guys.
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Postby thedoctor » Thu May 31, 2007 11:01 am

Sounds like you may be trying to put on too much in one go. Try layering it on in layers of just a couple of mm and building it up. Its easier to manage and it stays there.
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Postby hilly » Thu May 31, 2007 4:17 pm

Thanks will give this a go
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Postby Ginga » Thu May 31, 2007 9:57 pm

preperation is everything when rendering , damp wall beforehand , use the right mix for the background at the right consistancy , build up in coats , use a good admix with the gauging water

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Postby hilly » Sat Jun 16, 2007 8:35 pm

Thanks for the advice guys I have rendered the walls now and your advice has helped so once again thanks.
Last edited by hilly on Sun Jun 17, 2007 6:22 pm, edited 1 time in total.
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Postby DONFRAMAC » Sat Jun 16, 2007 10:04 pm

About 6 of my neighbours had a firm do this task, but in all cases the walls were jet-washed first to remove lichen, at a cost of about £100. The first coat of mortar went on over metal corner-strips, and edging between semi-detached houses. The jet-wash machine was a professional unit-- petrol powered, with a large carbuoy of water in the same trailer as the pump, but I don't think grit was used.
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