2007-07-27 01:56:34 · 4 answers · asked by chris w 1 in Home & Garden ➔ Do It Yourself (DIY)
all render should be in two coat work ..the first cout is the scratch coat ..the sand should be plastering sand and you can either use ordinary portland cement or masonry cement ..the latter has some lime in it and it makes it easier to use ..but the coatings are softer ..if the wall is very dry then wet it down first ,,give it a test ..pour a cup of water down it from the top and see how far the water runs before it is absorbed into the wall .if it disapears quickly ..then wet it down well ..apply the first coat ..a mix of 5 to 1 mixed by weight ..very important ..not shovel for shovel ..then with a piece of wood with nails fixed to the end and just coming through the bottom ..scratch the wall to create a key for the second coat ..apply top coat after 48 hours to allow first coat to fully dry ...then with a straight edged timber rule the top coat to show up all the hollows and high spots ..to do this you hold the straight edge horizontily at the bottom of wall and bring it up the wall using at the same time a left to right action to help you get a level finish ..then you fill all the low spots and do it all over again until you are happy with it ...then you need a tool call a float .. buy them at any builders merchants ..and go over and over the wall to make it flat and seal the coat ..it it dries out too fast ..then flick some water over the wall and it will make it easier to get a good finish
2007-07-27 06:38:47 · answer #1 · answered by boy boy 7 · 0⤊ 0⤋
Check out www.npda.co.uk.
Its the national property developers association so I'm sure someone there will be able to advise you.
You can become a member (for free) and ask in the forum.
Hope this helps!
2007-07-30 05:08:08 · answer #2 · answered by Anonymous · 0⤊ 0⤋
pretty much the way bad boy suggests but use a 4/1 mix and waterproofer in the scratch-coat and feb-mix in the top,both available at any builders merchants
2007-07-27 14:39:03 · answer #3 · answered by Anonymous · 0⤊ 0⤋
Go to this site http://ourhouse.ninemsn.com.au I got advise from here to do our outside wall and everyone remarked that they thought I'd paid a professional to do it! Hope this helps and good luck.
2007-07-27 02:18:58 · answer #4 · answered by Soup Dragon 6 · 0⤊ 1⤋