Spraying plaster/render
- Thread starter Lastlaff
- Start date
Explain your lies dickhead2016
A.plasterer
Private Member
reeves1985
Well-Known Member
How you finding it?2016
Since visiting pft I've had my eye on a couple.
Been a few years since I used a ritmo, was spraying mp75 back then
Lastlaff
Well-Known Member
I first sprayed a spray plaster called Alltek about 17 years ago - it was a crushed marbel plaster from Sweden. I was working in Edinburgh on a large commercial new build. The company brought over a couple of bods from Estonia to teach us. We had to tape & joint the pb then spray and level off with spats - it was a beautiful white glassy marble finish. Could this have been the first internal spray machines?
Plasterers1StopShop
Well-Known Member
I can remember doing it around 2008/9 with the SM1 from M-tec - not on site, in our depot
Plasterers1StopShop
Well-Known Member
Used my first machine at the young age of 11, it was 98/99 on a flooring job in Canterbury - obviously didn't really set the machine up, but was loading for a bit and on the end of the pipe pouring the screed. We still have the machine here at our depot. I'll have to find the photos of me loading the material into the machine, I had a little box so I could reach the hopper lol.
theclemo
Private Member
If it's multi u talking about it can't be sprayed. It's gets air bubbles in the skim and sometimes can't come out. U get a far far better finish by hand. Spray plaster like kanuf mp finish is good on the right jobs. But setting up the machine in the morning u would have the walls on by the time u get the machine out of the van set up water but set up the machine. Then u have to clean the machine out. Not really worth it on most jobs.
Plasterers1StopShop
Well-Known Member
@theclemo - thats in your experience mate and with the machines you use.
We have guys spraying Multi daily and the results for them are perfect mate. I agree, spray finish and MP are far far better to spray but Multi can be sprayed and it can be sprayed very well!
Air pockets can be down to the cross hatching method or simply due to the volume of air - too much air can cause this.
Spraying plaster is only really suited to bigger contracts as we always say, but, it will over take any plasterer on these bigger jobs. People always say they would have the done a few bags by the time the machine is off the van and set up.... You need to get your kit off the van and mix up also. Machine will be setup and spraying within 15 minutes.
I understand that some don't agree and think hand applied would always win, but, we have had several customers recently who are machine applying and they are coming back to us with amazing feedback. So much so, they are speaking to potential new customers for us, even spending time on site with them and they in turn are investing in machines from us as well.
We have guys spraying Multi daily and the results for them are perfect mate. I agree, spray finish and MP are far far better to spray but Multi can be sprayed and it can be sprayed very well!
Air pockets can be down to the cross hatching method or simply due to the volume of air - too much air can cause this.
Spraying plaster is only really suited to bigger contracts as we always say, but, it will over take any plasterer on these bigger jobs. People always say they would have the done a few bags by the time the machine is off the van and set up.... You need to get your kit off the van and mix up also. Machine will be setup and spraying within 15 minutes.
I understand that some don't agree and think hand applied would always win, but, we have had several customers recently who are machine applying and they are coming back to us with amazing feedback. So much so, they are speaking to potential new customers for us, even spending time on site with them and they in turn are investing in machines from us as well.
Plasterers1StopShop
Well-Known Member
Yes, cross hatching is a two coat method of spray applied and this is what causes people issues.
Can you explain this method? cheers
Plasterers1StopShop
Well-Known Member
Cross hatching, to be honest, we don't do it, or recommend it, so I wouldn't be the best to advise on the method. We know the results from it though from when we have done trials and when customers have also.
Its where the first pass is sprayed horizontally and the second pass sprayed vertically. This causes the air pockets and other issues.
So the whole lot is sprayed twice? Is there a flatten in between on the first coat?
theclemo
Private Member
I have sprayd multi with 3 different machines. And seen others used. I don't cross hatch. It only takes 1 min to get your mixer and bucket out of the van and a minute the get your water for mixing. I have sprayd over 30 ton of multi so I reckon am well experienced at it. I had a lad telling me he was spraying 200m2 with the ritmo. So I went and had a look. The work was ok but not the best. U could feel the odd air bubbles. I seen a hall way and I said to the bloke that's finish by hand. He said how do you know. I said it's a better finish. Most people get blinded by spraying skim as they want it to work so bad. And the quality drops. I was one of them. I showd the bloke a few tips how to get a better finish by spraying it. But the best thing I give him was kanuf number. Got talking to him a while later. After the painters where in he got pulled on site for some of the walls he sprayd. Was told not to use machine on site. It's ok some lads telling you it's great but it's not. U don't see any videos of it being sprayed and if you do see them it's for a few seconds. And never get to see it finished. Am just been honest not having a go at u or any body else that sales machines. I would not just buy a machine for spraying multi madness.
1990s, Sigma self finishing plaster, Rotterdam.
a local chap was spraying thistle projection plasterers in the 1970s. his advert was " its faster by tube", his problem was that he could not get experienced plasterers to work with him he would just have a few trowel hands.
I gotta job coming up RESkim a house. Generally the walls are quite good but It has had new chases cut in down the walls and new ceilings overboarded with the old coving took down. bathroom tiles Tiles been removed making rough looking walls.
I been thinking Spray Universal one coat bout 6-10mm to go straight over the shitty walls in the bathroom , so that wont need much prep. Then use the UOC to make good all the chases and spray the lot with an airless plaster, to save time messing with unibond or plas prime etc . Could be a nice easy job if i do it that way.
I been thinking Spray Universal one coat bout 6-10mm to go straight over the shitty walls in the bathroom , so that wont need much prep. Then use the UOC to make good all the chases and spray the lot with an airless plaster, to save time messing with unibond or plas prime etc . Could be a nice easy job if i do it that way.
Lastlaff
Well-Known Member
All interesting comments chaps. Has anyone used that Alltek plaster I used? It definately didn't leave any bubbles when finished. We sprayed it in one pass before finishing (as I can remember, it did get a light sand after but that was only from the rough arses work...i.e. me)
After that job they wanted a crew to go down to Heathrow airport for the new terminal to spray but as there was a local cafe that did a yummy Lorne sausage breakfast I couldn't be persuaded. Definately want to have a go at the spraying when I can.
After that job they wanted a crew to go down to Heathrow airport for the new terminal to spray but as there was a local cafe that did a yummy Lorne sausage breakfast I couldn't be persuaded. Definately want to have a go at the spraying when I can.
Lastlaff
Well-Known Member
As you are high up on the scaffold spraying there is less oxygen in the air so there may be less 'air-bubbles' in the multi...please report back with your results
Plasterers1StopShop
Well-Known Member
That all depends on who is spraying to be honest mate.
Our system and what we show is Spray once