External Render

[staningrimsby]

Morning Guys,

Going to render my garden wall this weekend as it looks a little shabby, just thought i would see if you can give me any advice as ive done loads of plastering but never external render.

1. whats the normal mix to use (5:1 sharp and dust) ???

2. Scratch coat then final coat ???

3. Finally plastic float to finish ???

Cheers in advance guys.

 

[cjam24]

Hi mate

The way i would do it is

5-1-1 don't forget the lime helps with movement and reduces the risk of cracks

Give the wall a good dust down then soak the wall

Put up a 5-6mm scratch coat let it start to set before applying the top coat give it another watering

6mm top coat rule off

Then float of for a finish (hard to explain in words)
keep a watch out on the suction water it daily.

hope this helps

 

[staningrimsby]

Whats the best sand to use should i just use sharp or plastering sand ???

 

[cjam24]

I would use sharp

 

[roughcaster]

Plastering sand would give you the best results for cement rendering,and after you've rubbed it up with the float, give it a sponge over. Get a nice flat rectangular/square sponge, put it into clean water, thoroughly wring it out and "very gently" rub over the surface of the render in a small circular motion. This brings a little sand to the surface, makes it look good,and also removes any small blemishes as you go. It's called a (wait for it)......sponge finish. Keep washing out your sponge regularly as you go.

Roughcaster.

 

[clout stench]

4:1 scratch

5:1:1 floating with waterproofer the next day

PLastering sand

 

[noseall]

It's called a (wait for it)......sponge finish. Keep washing out your sponge regularly as you go.

Roughcaster.

the Irish call it "napping up".

 

[roughcaster]

Cheers for that bruv.

Roughcaster.