Vitcas Heat Res Plaster

[DRTY]

Anyone used this product successfully?

Been roped into helping a fireplace guy out to push a job along, and when I applied it (with him) it just seemed wrong. He didn't even seem sure of the method himself which worried me lol.

Background is Vitcas boards, there's internals, externals, thin coat beads, it's certainly tricky but his method seemed wrong; we PVAd the boards (really?), then applied the product with hawk n trowel, then ruled to check flatness, left it for AGES, then basically struggled like mad to get a smoothish finish using floats in a similiar way you'd do on S&C render. Except this stuff was rock solid.

The instructions on the actual tub said to apply it, then leave 10-20 minutes and finish it with a trowel!

Obviously been doing some Googling and it seems many others including peeps on here also leave it for hours before also struggling to get a smooth finish, despite the instructions saying to do literally the opposite of that.

Even Vitcas' own instructions don't offer different application methods for going over their own board/render.

Anyone got a definitive technique? I struggle to believe a product exists which is this hard to get a good finish on

 

[Cornelius]

I've used it, not successfully though, awful stuff, hangs wet for hours didn't get a good finish on it at all. Would avoid using it again

 

[Topspread16]

It's a bit like magnetic but hangs like fucks, don't play with it and use minimal water. Like magnetic it's suppose to be a Matt finish, you can polish it though if wanted. I did a tv recess with a ledge underneath all made out of vitcas board. Just twitched the lot in


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[Danny]

https://www.plasterersnews.com/heat-resistant-plaster/

 

[solway]

Horrible horrible horrible muck. Greatest load of shite iv come across in the trade. Did 2 in the past. Both on board's. Struggled to get flat...got it as flat as possible. Looked okish going home that evening. Came back in the following morning and hairline cracks everywhere. Stood in front of it for 20 minutes baffled and scratching my head. Costs a bomb aswell mind you!!!

 

[Donzo]

Stuff is awful,,,,even called technical department to ask question.
Shi** finish.

 

[jamesthefirst]

You need to put on around 6mm to be heat resistent, i use grit as a key with half time sachet to get a lovely finish.

 

[Rossi46]

I hate it but have been successful with it. Use 2 coats of neat pva on their boards and be prepared to spend a whole day on it.
I worked for the fussiest feckers going and I knew they'd pull it if it wasn't bang on. Looked good when it was done and even got it to feather into the wall well too

 

[bill]

If it's on brickwork you're better off with 2 coats of 6 washed sand, 1 cement, 1 lime .

 

[Danny]

I hate it but have been successful with it. Use 2 coats of neat pva on their boards and be prepared to spend a whole day on it.
I worked for the fussiest feckers going and I knew they'd pull it if it wasn't bang on. Looked good when it was done and even got it to feather into the wall well too

I think if it was used regular it would be ok... just those jobs come so few and far between