Rendering small wall, mix by hand?

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Hi, sorry for any silly questions, first time rendering here!

I'm getting a guy to come and plaster this wall, but he said I could save some money by doing a coat of render then a scratch coat, then he'd plaster.

It's such a small job, how hard would it be to mix the render without power tools. Would you just use a spade in a bucket? Any idea how many bags or cement and sand I'd need for a wall like this?

Also, what mix would you go for, on the first and second coat. I have some SBR and waterproof admix, not sure if I should use both in the mix or just one, I bought them on the builders advice. It's an external wall on an old Victorian house, I want it to be protected from the elements

Thanks
20200509_163902.jpg
 
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you need to brick it up first.
4 bags of building sand and a bag of cement will be plenty.
id go for 4 1/2:1 with sbr .
mixing on the floor or on a spot board with a shovel.
mix your stuff up then generously wet the wall with a sprayer or hose set on a fine mist before starting.
 
you need to brick it up first.
4 bags of building sand and a bag of cement will be plenty.
id go for 4 1/2:1 with sbr .
mixing on the floor or on a spot board with a shovel.
mix your stuff up then generously wet the wall with a sprayer or hose set on a fine mist before starting.

Thanks, yeah I'll brick under the window first, just need to cut some bricks to fit the gap.
So 4 parts sand, 1/2 part cement and 1 part SBR? That seems like a lot of sand and SBR but not much cement! Do I use this same mix foe the first coat and the scratch coat. I read about making a slurry for the first coat, kind of painting it on everything

What do you mean by mixing on the floor? Would a bucket not make more sense than a board
 
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Thanks, yeah I'll brick under the window first, just need to cut some bricks to fit the gap.
So 4 parts sand, 1/2 part cement and 1 part SBR? That seems like a lot of sand and SBR but not much cement! Do I use this same mix foe the first coat and the scratch coat. I read about making a slurry for the first coat, kind of painting it on everything

What do you mean by mixing on the floor? Would a bucket not make more sense than a board
no ...4.5 :1 with sbr.
you can mix in a bucket if you like.
i’d only be painting slurry on first if there was a major damp problem.
 
no ...4.5 :1 with sbr.
you can mix in a bucket if you like.
i’d only be painting slurry on first if there was a major damp problem.

Ok thanks, so 4.5 sand, 1 cement and added SBR. So would you use SBR only, not waterproofer admix? Because I bought that to put in the mix

Thanks for the help. Theres not a damp problem that I know of, but there's some dodgy brickwork, its. double brick wall and victorian houses are prone to damp issues. So if a slurry would help protect from damp in the future, maybe I should do it.
 
sbr or waterproofer. either or. but
sbr will make the mix more flexible, give more adhesion to the brickwork and it’ll be easier to get a nice mix by hand.
you could mix a strong sbr slurry if you like, and apply it by brush and stipple it as a key for your cement coat.
 
Let the plasterer do it, plastering/rendering is an art.

Andy

I've done some small plastering jobs myself, tiny walls. This is quite a small space, I don't see why I can't do a scratch coat. You have to start somewhere!
 
maybe the forum should be renamed ‘let the expert do it’ .
no harm in having a go. your obviously keen to hone your skills. knock yourself out!
if it goes wrong scrape it all off ......... then let a spread do it:)
 
maybe the forum should be renamed ‘let the expert do it’ .
no harm in having a go. your obviously keen to hone your skills. knock yourself out!
if it goes wrong scrape it all off ......... then let a spread do it:)
Thanks, yeah its about the only opportunity I'll get and you can see how small the wall is.

One more thing, should I put anything on the bricks before laying the first coat of render? Should I just wet it, or use SBR?

And do you get a special rake type tool for scratching up each coat, or is good DIY solution?
 
Benny, I'm on your side. I'm trying to stop all the diyers nicking your work. ;)

Andy
there’s more money in it after they realise they can’t do it:LOL:... i’d have bricked it up and bought 2 bags of hardwall. robodelfy wants to learn rendering(y)
 
Thanks, yeah its about the only opportunity I'll get and you can see how small the wall is.

One more thing, should I put anything on the bricks before laying the first coat of render? Should I just wet it, or use SBR?

And do you get a special rake type tool for scratching up each coat, or is good DIY solution?
get yourself a length of 2x1 which you can use to rule it off - square it up.
also you could use a polyeurethane float with a couple of nails in to lightly scratch it up and flatten it off nice.
give it a good wet with plain water.
 

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