Plaster Or plasterboard?

digisatman

digisatman

digisatman

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Hi all,

Quick q, I want to cover up the bare brick walls in my garage, and was wondering if I should use plaster, then paint over that or use plasterboards then paint over that?

Cheers
 
Plasterboard (dot and dab with adhesive, tape the joints then skim coat on top, or if youre just to lazy and want a crapper finish, Plasterboard (dot and dab, then tape and fill the joints and sand and paint.
 
Hi,

I'm no expert, but don't/shouldn't you render the wall then plaster?

Also, doesn't plasterboard need skimming once put up, then you paint it?

Although I might be wrong?

Regards
 
Plasterboard generally has better u values than plaster, so will be a better insulator of heat. Also the boards would be a lot easier to work with as you can cut them to size.

Edit - plasterboard does not need a layer of skim, you can paint it directly.
 
Depend what you are doing with it, I've just converted my garage, on external walls I used insulated plasterboard and the now internal walls I just got them rendered and skimmed. Dot and Dab is OK but usually garage walls are a bit rough and uneven.

Plasterboard is very cheap and only needs tape and jointing.
 
plasterboard is better, cheaper quicker and you get a better flatter finish. Be time youve paid someone to render the walls youre better off and quicker plasterboarding it. You can get over any uneveness far easier dotting and dabbing than rendering. Once you render the walls you would have to skim coat on top, so dont think a rendered, browning finish would be a one coat jobbie. Plus its a better source of heat value. If its an external wall, single skin etc, then youll need to put some kind of damp barrier up against, then studding, best bet is to make your stud walls in situe and tack something on the back to stop damp, then put your walls up. then insulate and plaserboard. if its a cavity wall, do as above, dot and dab etc.
 
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Firstly, is the garage single or double-walled? 1 brick wall thick or 2 brick walls thick?

Reason I ask is that I thought 1 brick thick walls have the habit of being effected with damp? So i thought you had to vapour barrier the wall, fit a wooden wall structure, insulate (I suggest a wool insulation) then add plasterboard, plaster and then paint.
 
What sort of wall is it? Interior, exterior, solid, cavity? Age of the property.

I wouldn't dot & dab or plaster directly onto the inside surface of a solid brick exterior wall.
 
I would stud frame the walls, fill the cavity with isulation and plaster board. I would also skim the boards.

Thats a proper job. Would hate to dot and dab an exterior wall, eww, /shudder.
 
Do not dot and dab an exterior wall unless it is a proper cavity wall, damp will permiate through the bricks then the **** and dots then through the plasterboard, this happened in the parents. Previous owners cut one too many corners! I had to strip it out, put timber lats up, stapled some polythene, then plasterboard, joint and paint.
 
4MIT said:
Do not dot and dab an exterior wall unless it is a proper cavity wall, damp will permiate through the bricks then the **** and dots then through the plasterboard, this happened in the parents. Previous owners cut one too many corners! I had to strip it out, put timber lats up, stapled some polythene, then plasterboard, joint and paint.
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Alternative would have been to hack off & render with 3 parts sharp sand to 1 part cement, then either dot & dab that or have it conventionally plastered.

We had a well-meaning relative plaster some patches on our walls, multifinish direct onto the brick. It never dried out. As you say, dot & dabbing that sort of wall would just draw moisture out of the bricks and mortar and into the board.
 
yes i think we need to know if external wall, single or double skin etc.

Subscribed to this thread as interested in this. As my garage is a integral, but 3 walls are single skin brick to the outside world. Have been tempted to do this myself but don't know the best way,


Also when people say use insulation between the gaps.

Do they mean any type of insulation, reason I ask is

a) I know nothing about building work and
b) I saw at B & Q large rolls of loft insulation for £2-£3 the other day. Just curious, could you use that as insulation between outside wall and plasterboard or is loft insulation not suitable for anything else other than loft use.
 
I saw at B & Q large rolls of loft insulation for £2-£3 the other day. Just curious, could you use that as insulation between outside wall and plasterboard or is loft insulation not suitable for anything else other than loft use.
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Wool (loft type) or sold board type, hell even polystyrene Sheet, it doesn't matter.

It's more about cost, ease of use and what you prefere to use.
 
It does matter you need 400mm of loft insulation to get the same performance of something like 150mm of Kingspan Kooltherm k3, also it'll sag into a cavity.
 
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