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 Post subject: Plastering Techniques
PostPosted: Sat Nov 18, 2017 12:48 pm 
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Just out of curiosity after a first coat has been applied, do you trowel it up or do you move straight onto the next coat?

Also whats your average time to first coat a wall of say 10 ft x 7 ft


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PostPosted: Sat Nov 18, 2017 6:50 pm 
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A lot of people try troweling up far to soon, so long as the walls are prepped okay or on new board you have plenty of time to have a break, wash all the kit before flattening the first coat.
Nine times out of ten if you catch it right you can get a near on perfect finish on the first coat, which makes it a lot easier on the second coat.

Timing wise a lot depends on the size of trowels and if you have someone knocking up, I'd say ten minutes for the first coat.

Also if using the larger trowels! Step up to the larger hawk.



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PostPosted: Sat Nov 18, 2017 9:13 pm 
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This article is from theplasterersforum http://www.plasterersforum.com/threads/ ... ide.32076/.
Join up, there are some very useful guides on there and some colourful banter too!

Mike

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PostPosted: Sun Nov 19, 2017 6:48 am 
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To simplify somewhat, rougth trowel the 1st coat as you put it on.
Then don’t touch it until it gellifies (soft but not sticky), then flatten/smooth it with the biggest wet trowel you can find - fast - the idea is to level the surface, not to delve on details.

Now, it this was on a flat subsurface (plasterboard), the plaster would be a 1/4 MP75 to finishing plaster, and could be pressure/water troweled to finish after an hour or so (trick learnt from Polish artisans).
If on rougth, then wait for dry, knock out the high points and do your finish plastering.

In any case, this a very vague guide at best, the materials, surfaces, climate vary a lot - so does the “how to”.

My personal favorite internet source is Kirk Giordano, but his Californian material selection and setting times are not for Derbyshire!
https://m.youtube.com/channel/UCZ1wkNnjD06gYLeDFRW7hNQ



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