The fiddly bits are finally on. Bit of a problem with the last piece. The wall looked flat but had a lump. Should have checked with a straight edge first but fortunately I can get away with it and the bit that will show is fine. Only problem I have had sticking to an old wall. It's easy to miss remaining plaster and odd bits of mortar sticking out, Unlike the pro's going on video's I have watched since more or less finishing I have whacked it well home – following the builders advice, press it very firmly home. He's one if the good guys. I know from other work he did for us.
One video showed the end of the plaster board resting on the floor – that can be really bad news later. Plaster will wick up water like nobodies business especially plaster board.
Mixing the glue looks to be good practice for mixing plaster. Gauge the water needed then add the powder until the mix is correct. The lumps disappear pretty easily as the mix gets near the correct stiffness. It's easier that way as the water is the critical bit.
I need to do some plastering next. Thick stuff, just to fill the gaps to the main wall and a bit of blending. How that goes may well set what I do to finish it. My main problem last time was not waiting for it to go firmish before using a float and a little water. Very little. 2 coats are usually used too, It seems that helps get a decent finish as the last coat can be very thin and more or less just fills in marks – pass. Not tried it that way but might.
I may have a problem with the plaster board for the ceiling. Bought too soon and can't store it properly so it's warped a bit. If dry wall screws wont pull it flat I'll have to throw it away.
Next decision is the new wall.
Stick 2.7m x 1.2m feather edge to it, joint it and then use emulsion mist coating etc. The cost of the 2.7m lengths is disgusting compared with the 2.4's.
Use the small boards and joint it. That will probably need skimming however when they use these on ceilings they stagger the joints along the longest length. I could do that both ways on a wall. It's messy but easy to chamfer the edges of the boards so the jointing compound will be working on plaster not paper so if done neatly that to can be mist coated etc too. If in the future it doesn't work out it could still be jointed and skimmed. Given there would be plenty of adhesive behind it I can't see why there should be a problem anyway. The big plus is that the boards are much easier to handle.
On the ceiling I will definitely use 2.4×1.2m well jointed feather edge board plus stagger the long length joints.
John
–
Edited By Ajohnw on 29/11/2016 20:22:57