Plastering internal walls of new kitchen extension

[moe100]

Firstly hi to everyone.

O.K heres the problem. I don't know how to proceed with the internal walls of the kitchen extension.

construction
2 walls are brick/cavity/thermalite blocks and 1 is party wall/cavity/brick.

Should I use a

cement render/undercoat plaster/finishing plaster

thistle/undercoat plaster/finishing plaster

dot and dab plasterboard

I have been told the cement render will strengthen the walls, but is this over the top. But bear in mind I have to hang the kitchen units from the walls. whats the best option

cheers

 

[NS215]

just finished my kitchen extension and i used dot and dab (frowned upon by some on here)

 

[Aqua]

1/2 inch plaster board with dot and dab board adhesive.

 

[Richard C]

Dot/dab is probably the easiest route if you intend DIY or if the skill of the plasterer is suspect (& I confess I’ve taken this easy route a couple of times) but on a new extension, I would definitely go traditional & use undercoat & finishing plaster.

 

[mgallagher]

Hi,


I have previously renewed my kitchen and gone back to bare brick, I also went down the route of dot & dab plasterboard.

one thing I would like to mention, I screwed approx 250 x 15 thk timbers to the walls at the point were the wall untis would be fixed, this makes it a lot easier when the kitchen fitter needs to fix the units they can screw them straight on with no hassle of plasterboard screws etc

 

[dougalhouse]

undercoat (float) and skim = square flat walls = easy fixing units & worktops

 

[moe100]

Thanks all,

When some of you advise undercoat and plaster. Do you mean undercoat with cement render or undercoat plaster.

 

[noseall]

generally a fitted kitchen requires many drilled fixing points and a float and set (backing plaster with a skim finish top coat) lends itself well to this purpose.

for convenience and ease of use, a light weight render such as thistle browning (good all rounder) or thistle bonding (low suction backgrounds)are the plasterers choice.

 

[Aqua]

on a new extension, I would definitely go traditional & use undercoat & finishing plaster.

What is this undercoat you are refereing to.... browning ?

 

[moe100]

Guys, would thistle hardwall be closer to sand cement properties. is this a good compromise.

 

[noseall]

Guys, would thistle hardwall be closer to sand cement properties. is this a good compromise.

why are you so concerned about the properties of sand/cement render?

ultimately it will be the penetrating depth of a mechanical fixing that will be taking the load. the render just becomes part of a sandwich. you will not crush bonding or browning with kitchen unit fixing.

 

[moe100]

Hi Noseall,
I'm mainly concerned with the thermalite blocks. I'm thinking, if I use cement render then it will strengthen the walls and stop any possible movement/cracks in the future. These thermalite blocks don't look as strong as the original 9" brick blockwall the house is made from

Am I worrying too much

Cheers

 

[noseall]

Am I worrying too much

Cheers

yes and no.

i tend to go a half a drill size smaller than recommended for the wall plugs when dealing with softer substrates. it makes the fixings nice and snug.