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While renovating our house, I am finding I am using quite a lot of PVA glue, watered down on brickwork before filling holes with plaster. now I plan to try my hand at plastering one of the rough walls, before we get a chap in to make all the walls look nice. Seems an ideal place to have a go as its going to end up in a cupboard. However, I dont know whether I need to pva the wall again and if I do, it is still watered down stuff? or Neat? I thought it would be quite handy for a post on PVA rules. I am sure its something most builder people know but us newbies do not. so has anyone got rules that I would find useful - when do you use pva? what other things can it be used for and how should I use it? Ideas please.

PVA is used for many things build related. In the instance of plastering over it, regardless of it being cement render or gypsum plaster, the PVA must be tacky. Not wet, and most definitely not dry as that is like trying to get something to stick to plastic. If you wish to plaster then typically you need to ascertain the background ( type of surface upon which you wish to apply it ) and work out if it's high or low suction. For eg, painted walls it would be low suction ( near zero porosity) but for old black mortar it would be high suction. The difference is which will 'suck' the moisture out of the plaster faster or slower.

But it's silver line so it's a one use only then gets binned so not a bad price.

Welcome and all the best for the build, will look on with interest and help where we can - its a great forum, one day all social networks will be like this one.

Hope it's not the difference between Phillips and pozi. 90% of blokes I work with can't tell between

Hi all, Many thanks for the warm welcome. North Wilts in a village @jack, been here for over 20 years and love the village so extremely lucky to have had the opportunity to get the plot next door. Sitting here today @Tennentslager the plan is to build a 225ish sq m 2 story 4/5 bed house, timber frame, pretty air tight (1.5 air changes/hr), MVHR, south facing gable end with glass (worrying about over heating), UFH on ground floor in the slab, rads upstairs heated with gas (mains), solar PV, barn appearance from the road, more contemporary from the (private) back, vaulted kitchen / dining / day living room with some timber features, snug, downstairs room with ensuite to turn into a bedroom when we are decrepit and can't manage the stairs. I thought I would get this down so that I can look back on it and see what I end up with vs this. Current position is having seen 5 architects, 1 more on Friday then make a decision. Get some drawings done and then do a pre app to see how the land lies. Shame England couldn't win the grand slam, you have to give it to the Irish for their performance.