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I have some patch rendering to do and I thought it would be pretty straight forward; just get some straight sand and cement render for the scratch coat and then apply a top coat. But, this is my first time and there are a multitude of different options out there it seems!
And, I've got a few different scenarios which I feel require different considerations, so I want to try and find a single option that can cover them all if possible without the needs for buying different materials for each...
1. I have full depth patching, that goes back to brick to carry out in the kitchen (10mm+)
2. I need to patch where the old wall heater was and now has a sheet of cement board to render over (5-10mm), but there is deep gaps on the sides (see photo)
3. I need to skim some areas where removing tiles has removed mainly just the top coat, and few mm's of base coat in places.
4. Oh yes, and also filling in chasings from new cable runs (about 30mm).
I was going to keep it simple and cost effective, but then I read you need to use a different kind of render for cement board and I don't want to have to buy different materials for each task!
Can I use Dunlop 20kg Multipurpose Acrylic Render as a base for all tasks, then apply a top coat?
Thanks again!
Can I use any other bonding agent, my local doesn’t stock this one?
I’ve heard of people using a pva mix, is that suitable..?
Do the bonding agents get diluted, or used as they are?
I’ve also just identified another hole I have to fill which is going to require a whole other approach (pun unintended!).
As you can see, there’s a cavity behind so there not a lot to hold anything together! Maybe 50mm at the bottom of the hole there…
Things are progressing well, albeit slowly! I had respect for plasterers before this; even more so now!!
I haven’t started on the cement board section yet, but before I do I want to check if I need to prime it with anything special before applying the Fine Coat Render?
Thanks @JacobZ
I’ve done the fine coat render on the main part of the wall, unfortunately I’ve not got the finish anywhere near as smooth/flat as I’d like. Fortunately, the majority of it is covered by cabinets or tiles. However there is still a section that will be painted. I was wondering if I can skim a really thin coat of plaster over it to try and take out the imperfections?
I’ve only put the first coat of render on the cement board so far, so I’m thinking of using plaster to finish it as well to try and match the walls on either side if you think that would work?
Slight deviation from the original post, but all the wall in my place have what appears to be lining paper under the paint (see pic - the blue is painted, the beige is the ripped paper, and then there’s the old plaster). Can you suggest anything that I should do to transition the patched section with the old lined walls? I had wondered whether feathering the plaster might work, but don’t want to end up with plaster peeling off where I’ve gone over the paper. Failing that do I need to try and cut the paper back, and try and fit another sheet so as to try and match them up…??
Good Afternoon @squeakysim
I would try cutting off a section of that shiny pape rsurface next to the blue paint to see whats under it. As @JacobZ has suggested it could be plasterboard and if thats the case I would cut a straight section so theer is no loose paper and continue with your rendering. (Every job we do we get better 
) I have not rendered anything and hope one day when I do it goes as well as yours.
Dave
