First attempt at rendering didn't go very well!

saxtim

New Member
I'm attempting to render an outside BBQ island, and my first attempt was a bit of a disaster. I've only done one wall, so there's opportunity for improvement!

I'm using the following two products over fibre cement sheeting:
First coat/dash coat https://www.cemix.co.nz/products/cemsplash/

Finish coat

The first coat went down fine and seem to adhere well. I ran into problems on the second coat. The render went on okay but when I came to float it (I've got a wooden float), the render didn't compress and even out, rather it mostly crumbled away (fine particles like sand, not large chunks of render). Some stayed on the wall, but I couldn't float a finish that was remotely acceptable.

I'd mixed the render per the instructions on the packaging, and I'd wet the first coat down before applying. I'm wondering, however, if I didn't wet it enough and it's pulled all the moisture from the top coat before it could cure properly? Or maybe I mixed the render too dry to start with?

Hoping that my next attempt results in a better result.

Tim
 
Thanks mate
Well saxtim, a little knowledge is a dangerous thing
If I was you I would 100% not do this job at all, just pay a plasterer to do it for you, whilst you're at get a gardener to mow your lawn, get a chippy in to put your shelves up and basically live happily paying other f*ckers to do everything for you because at the end of the day you're not an expert in anything and most of the c*nts on here aren't either and are worried you're taking money away from plasterers who are clearly very precious about their trade and other people doing it themselves it's driving down prices.
Any way what YouTube video did you watch?
 

raggles

Private Member
I'm attempting to render an outside BBQ island, and my first attempt was a bit of a disaster. I've only done one wall, so there's opportunity for improvement!

I'm using the following two products over fibre cement sheeting:
First coat/dash coat https://www.cemix.co.nz/products/cemsplash/

Finish coat

The first coat went down fine and seem to adhere well. I ran into problems on the second coat. The render went on okay but when I came to float it (I've got a wooden float), the render didn't compress and even out, rather it mostly crumbled away (fine particles like sand, not large chunks of render). Some stayed on the wall, but I couldn't float a finish that was remotely acceptable.

I'd mixed the render per the instructions on the packaging, and I'd wet the first coat down before applying. I'm wondering, however, if I didn't wet it enough and it's pulled all the moisture from the top coat before it could cure properly? Or maybe I mixed the render too dry to start with?

Hoping that my next attempt results in a better result.

Tim
Could be any reason tbh.
You would appear to be using a kiwi product which 99.9 percent of people on here won't have used before. Your best bet would be to look at any videos the manufacturer has out there.
Taking a float over a render has as much to do with experience of when to float it rather than how.
 

saxtim

New Member
Thanks mate
Well saxtim, a little knowledge is a dangerous thing
If I was you I would 100% not do this job at all, just pay a plasterer to do it for you, whilst you're at get a gardener to mow your lawn, get a chippy in to put your shelves up and basically live happily paying other f*ckers to do everything for you because at the end of the day you're not an expert in anything and most of the c*nts on here aren't either and are worried you're taking money away from plasterers who are clearly very precious about their trade and other people doing it themselves it's driving down prices.
Any way what YouTube video did you watch?
@Raf121 - where would the fun in not trying it myself?:LOL: Seriously though, the whole job (an outdoor deck/kitchen area) is a DIY job. Most of the skills I've needed so far for this job I've already had some experience with, but the rendering is completely new. I do enjoy learning new skills though and I'm keen to keep having a crack at it. I'm not naïve enough to think I'm going to become an expert plasterer in the space of one job and of the back of a few YouTube videos, but I'm hoping to be able to passable at least to me (and my expectations are not super high given I'm aware I'm a complete beginner).

In terms of YouTube videos, I've watched heaps, but specifically quite a few from these two channels:


I'm wondering if I just waited too long to float it - though I'd expected if that was the case the render would just be too hard/solid and not crumble off as sand/dust/powder like it did (that's why I wondered if it was likely it dried to quick or the moisture was sucked out of it because I hadn't wet the scratch coat thoroughly enough).

Could be any reason tbh.
You would appear to be using a kiwi product which 99.9 percent of people on here won't have used before. Your best bet would be to look at any videos the manufacturer has out there.
Taking a float over a render has as much to do with experience of when to float it rather than how.

@raggles

If it helps, the cemix product is just cement and sand (unsure of what percentages) and a small amount of additives (data sheets don't see what, but I'm guess some sort of bond enhancer in the first coat and a plasticizer in the second)

Tim
 
@Raf121 - where would the fun in not trying it myself?:LOL: Seriously though, the whole job (an outdoor deck/kitchen area) is a DIY job. Most of the skills I've needed so far for this job I've already had some experience with, but the rendering is completely new. I do enjoy learning new skills though and I'm keen to keep having a crack at it. I'm not naïve enough to think I'm going to become an expert plasterer in the space of one job and of the back of a few YouTube videos, but I'm hoping to be able to passable at least to me (and my expectations are not super high given I'm aware I'm a complete beginner).

In terms of YouTube videos, I've watched heaps, but specifically quite a few from these two channels:


I'm wondering if I just waited too long to float it - though I'd expected if that was the case the render would just be too hard/solid and not crumble off as sand/dust/powder like it did (that's why I wondered if it was likely it dried to quick or the moisture was sucked out of it because I hadn't wet the scratch coat thoroughly enough).



@raggles

If it helps, the cemix product is just cement and sand (unsure of what percentages) and a small amount of additives (data sheets don't see what, but I'm guess some sort of bond enhancer in the first coat and a plasticizer in the second)

Tim
I wasn't being serious, I was simply pointing out that most of the guys on here hate DIY'ers, can't take any abuse after they dish it out even though they're apparently in the trade and are scared that their trade will get/is f**k*d due to people doing it themselves.
 

Cockney1

Well-Known Member
I wasn't being serious, I was simply pointing out that most of the guys on here hate DIY'ers, can't take any abuse after they dish it out even though they're apparently in the trade and are scared that their trade will get/is f**k*d due to people doing it themselves.
200.gif
 

raggles

Private Member
@Raf121 - where would the fun in not trying it myself?:LOL: Seriously though, the whole job (an outdoor deck/kitchen area) is a DIY job. Most of the skills I've needed so far for this job I've already had some experience with, but the rendering is completely new. I do enjoy learning new skills though and I'm keen to keep having a crack at it. I'm not naïve enough to think I'm going to become an expert plasterer in the space of one job and of the back of a few YouTube videos, but I'm hoping to be able to passable at least to me (and my expectations are not super high given I'm aware I'm a complete beginner).

In terms of YouTube videos, I've watched heaps, but specifically quite a few from these two channels:


I'm wondering if I just waited too long to float it - though I'd expected if that was the case the render would just be too hard/solid and not crumble off as sand/dust/powder like it did (that's why I wondered if it was likely it dried to quick or the moisture was sucked out of it because I hadn't wet the scratch coat thoroughly enough).



@raggles

If it helps, the cemix product is just cement and sand (unsure of what percentages) and a small amount of additives (data sheets don't see what, but I'm guess some sort of bond enhancer in the first coat and a plasticizer in the second)

Tim
If that's the case you're better off on YouTube. You will find lots of sand and cement rendering how to's on there.
If you have never rendered before you will probably be very slow compared to a tradesman, obviously the knowledge and experience is lacking so, watch someone on a video explaining the process.
It will be a lot easier than trying to grasp it from the written word.
 

BryanJ

Well-Known Member
Thanks mate
Well saxtim, a little knowledge is a dangerous thing
If I was you I would 100% not do this job at all, just pay a plasterer to do it for you, whilst you're at get a gardener to mow your lawn, get a chippy in to put your shelves up and basically live happily paying other f*ckers to do everything for you because at the end of the day you're not an expert in anything and most of the c*nts on here aren't either and are worried you're taking money away from plasterers who are clearly very precious about their trade and other people doing it themselves it's driving down prices.
Any way what YouTube video did you watch?
So you can watch Youtube videos to become better at plastering.
I will try that next time the wife catches me watching porn videos,
I am only watching them so I become a better lover?
 

BryanJ

Well-Known Member
Yes but you have learnt, to wipe your finger across your nose, just before you get smashed.
1616536876412.png

No comment about watching YouTube 10.000 times?
He never would have been a good plasterer.
 
Top