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plaster

Plaster is a building material used for the protective or decorative coating of walls and ceilings and for moulding and casting decorative elements.
In English, "plaster" usually means a material used for the interiors of buildings, while "render" commonly refers to external applications. Another imprecise term used for the material is stucco, which is also often used for plasterwork that is worked in some way to produce relief decoration, rather than flat surfaces.
The most common types of plaster mainly contain either gypsum, lime, or cement, but all work in a similar way. The plaster is manufactured as a dry powder and is mixed with water to form a stiff but workable paste immediately before it is applied to the surface. The reaction with water liberates heat through crystallization and the hydrated plaster then hardens.
Plaster can be relatively easily worked with metal tools or even sandpaper, and can be moulded, either on site or to make pre-formed sections in advance, which are put in place with adhesive. Plaster is not a strong material; it is suitable for finishing, rather than load-bearing, and when thickly applied for decoration may require a hidden supporting framework, usually in metal.
Forms of plaster have several other uses. In medicine plaster orthopedic casts are still often used for supporting set broken bones. In dentistry plaster is used to make dental impressions. Various types of models and moulds are made with plaster. In art, lime plaster is the traditional matrix for fresco painting; the pigments are applied to a thin wet top layer of plaster and fuse with it so that the painting is actually in coloured plaster. In the ancient world, as well as the sort of ornamental designs in plaster relief that are still used, plaster was also widely used to create large figurative reliefs for walls, though few of these have survived.

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  1. C

    Tiling onto plaster for shower/bath

    Hello, I’m doing a DIY bathroom job and would be very grateful for some advice. The bathroom is in a 2nd floor flat in a converted Victorian house. The bathroom walls for the corner into which the bathtub and shower will sit appear to be dry walls with wool insulation, foil backed...
  2. ShaunCorbs

    ....... Ebay Plaster .......

    anyone need any plaster https://www.ebay.co.uk/itm/324136872450?ul_noapp=true :D
  3. S

    Textured wall - asbestos risk?

    Hi everyone, I’m a bit paranoid about asbestos, and I’m living in this apartment - looks to be around mid80s - with a texture on most of the walls (although not ceilings) and the built-in cupboards and shelves. It’s mostly in good condition, but there are a few damaged bits. Do you reckon it’s a...
  4. Andrew Stride

    Chased pipes into wall.

    What is the minimum depth of plaster required to cover central heating pipes chased into a wall, my plumber has left about 1mm of space from the surface of pipes to the surface of the plaster, I'm doing the filling but I'm not an expert and 1mm don't seem enough to me. Can someone please advise me.
  5. thandroids

    How can these things happen and best course of action for repair?

    Hi, guys a while back there was supposedly a leak coming from my bathroom to the flat below me, but I don't think the leak was actually from my bath or toilet. What could have caused this as it seems there is always some sort of leak no matter if bath or toilet is replaced etc. Have you seen...
  6. F

    Pipe lagging for radiator pipes set in plaster

    Hi, My plumber chased some radiator pipes into my masonry wall and has left it to me to cover up - which I will do with plaster filler. However - he hasn't put any protective cover on the pipes. He suggested I get denso tape and wrap it round the copper pipes - but denso tape has a melt...
  7. Stanios

    How do you hang a radiator on a crumbly/lath plaster wall?

    Hi everyone, I am confronted with crumbly wall, the sort that doesnt hold rawl plugs in. Managed to hang all but one rad and made a right mess of the wall on the last 1. Now can stick my finger in the wall. Its a thick wall, going to the job tomorrow and thinking of trying again by moving the...
  8. J

    Cut a 300mm hole in lath and plaster ceiling?

    I have to fit a condensation control fan (PIV) into the hall ceiling. The hole needs to be about 300mm and the ceiling is lath and plaster! Any tips for cutting the ceiling without damaging the surrounding lath and plaster? Cheers
  9. M

    Boiler and plastering

    Hi guys and gals.<br><br>This is my very first post on here and I hope you can help. Sorry in advance for the length of this post!<br><br>I've &nbsp;had the bathroom renovated and the lounge and kitchen are now being done. &nbsp;The guys (two) have been finishing the plastering after first fix...
  10. M

    Tips on fixing to dot and daub plaster walls

    I asked the plaster to solid daub a few areas were I need a good fixing however they haven't. I'll be using long screws to get to the breeze block behind. Any tips on not crushing the plasterboard though. Guess using a hand held screwdriver over a drill driver will help.
  11. M

    plaster skim corrode copper?

    Can finish plaster/ plaster skim corrode copper, if any is dropped on a pipe and not cleaned off?
  12. K

    Radiator Supports

    I have a Stelrad Softline 1100 Double Convector fitted in my livingroom. I removed it to plaster and decorate but the walls were in a far worse state than expected. I have refitted the radiator on the original brackets but immediately long cracks have appeared in the new plaster, coming from...
  13. R

    Plaster board fixings

    Friends Got to fit a radiator to a plaster board. These have been recommended Any thoughts? http://pages.ebay.com/link/?nav=item.view&alt=web&id=301008593424&globalID=EBAY-GB Tjx
  14. T

    Best plaster board fixings DEBATE

    What's the best fixing for plaster board, what's the strongest, easiest, versatile. I like the the self drilling rawl ones. Don't even have to drill a hole lol
  15. T

    Rad on plaster board wall

    I got a customer wanting me to fit a column rad to a wall that's been "dot and dabbed" I am not overly happy because it's not like normal rad brackets that spread the load these are small brackets that use m10 bolts. There is only a 10mm gap to the solid wall behind and he seems to think I can...
  16. P

    Plasting chimney for wood burning stove

    Hi ive got a chimney that needs rendering and skimming or boarding (im Hetas Reg), I had a plasterer that was meant to do it but has let me down, whats the best thing to put round the inside of a chimney breast where a wood burner will sit and will not crack, Thanks
  17. Z

    Gas pipe behind plaster board wall

    Not in its own purpose made duct ie dot and dab. At risk?
  18. D

    Fitting a rad to lathe & plaster wall

    Advice please. Im due to fit a new rad (current one is 1740mm long so cannot get like for like size ), but not sure if i will encounter problems fixing it to the wall, as the brackets are usually set on the back of the rad & it is very likely i wont be able to line them up to the studs...
  19. L

    Denso Tape covering heating copper pipes bleeding through Plaster

    Hi everyone, I need some urgent help, we had 4 radiators fitted 2 weeks ago with chased copper pipes. Understood that the best way to avoid corrosion was to cover them on Anti-corrosion tape (Denso Tape), however no-one told me that the oil (Petroleum) would bleed because of the heat and stain...
  20. Kewat66

    Hidden stopcock

    Hi All, I have a request from a client to move a stopcock from its current position into a small loft directly above where it currently is. They want to plaster over the wall and put a radiator directly over it. My question is even though the stopcock is in a new position am i ok to put some...
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