rendering denseblock

DIYsaster · Posted: Sat May 19, 2007 8:38 pm Post Subject: rendering denseblock

Hi, i'm new to this site. was looking for tips on rendering a raised garden bed wall i've just built out of denseblock. Its not a massive wall (20ft by 1.5ft approx)but a few pointers would be appreciated. The wall will be retaining soil for bedding plants so i was going to render both sides of the walls?! would a 3-1 mix do the job? is using sharpsand going to make my life easier? am i wasting my time!!!? thanx

brist · Posted: Sun May 20, 2007 9:24 am Post Subject:

4-1 with some opti-mix

noseall · Posted: Sun May 20, 2007 6:05 pm Post Subject:

.....and use PLASTERING sand.

DIYsaster · Posted: Sun May 20, 2007 9:42 pm Post Subject:

cheers - any more tips? never done this before!!!

noseall · Posted: Mon May 21, 2007 5:51 pm Post Subject:

DIYsaster wrote:

cheers - any more tips? never done this before!!!

oh dear.

DIYsaster · Posted: Mon May 21, 2007 8:29 pm Post Subject:

rendered inside of wall, didn't do too bad a job, decided just to paint outside tho!!!!!!!!

nwhessian · Posted: Wed May 30, 2007 4:53 pm Post Subject:

I have done similar, but i didnt see the need for redndering internally.
Just plenty of black jack for me!
Best to add a waterproofer to the render mix, and definately use plastering sand.
Two coats, scratch then finishing coat.
Wet the surface up a load before applying too,
and even wet up with some PVA, cant do any harm?

(by the way this is a joke)
I think i read somewhere on this forum a few times that PVA shouldnt be used on external rendering?
But thats all just popy cock! I use PVA for everything, its brilliant stuff!
You can even make collages with it like when you were at primary school!

scaper · Posted: Sat Jun 16, 2007 2:36 pm Post Subject:

i was told pva only in the second coat, otherwise it creates a barrier so water is not absorbed and therefore doesn't bond.

dazzer1971 · Posted: Sat Jun 16, 2007 6:04 pm Post Subject:

noseall wrote:

DIYsaster wrote:

cheers - any more tips? never done this before!!!

oh dear.

Hey theres a first time for everything!!

g