Plaster-in valves

[Nickfromwales]

16 minutes ago, Super_Paulie said:

Yeah my shower is pretty much opposite the door as it is. Just wondering if the gypsum based vent as discussed in this thread is more prone to getting damaged from moisture being in such direct contact with steam.

Zero chance.

[-rick-]

14 hours ago, Nickfromwales said:

You'd need a better plumber to make this a reality!

 

Not important but I have absolutely no idea what you are getting at here. 🙃

[Nickfromwales]

2 hours ago, -rick- said:

 

Not important but I have absolutely no idea what you are getting at here. 🙃

Heat and steam off a decent shower will negate any feeling of cold / draught etc.

[-rick-]

17 minutes ago, Nickfromwales said:

Heat and steam off a decent shower will negate any feeling of cold / draught etc.

 

Ah. Not sure what a plumber has to do with that. In my mums cold bathroom with relatively weak shower she specifically asked for the fan to be moved further away from the shower head because she thought it promoted cold. Couldn't tell you if it made any difference (used it before and after) but I could see an argument for wanting more steam to hand around (for a short while) in a room like that. (Of course consequences are condensation everywhere but that's another matter).

[Super_Paulie]

Bit of a kick in the balls, when I was screwing up my plaster in grill it cracked a bit of. Not a chance I'm buying another for £70 a go, so what adhesive is best for this to stick the bit back in before I scrim tape and multi over the ceiling? 

 

CT1? plasterboard adhesive? 

 

1 step forward, 2 back as per.

Edited July 27 by Super_Paulie

[JohnMo]

Super glue 

[Super_Paulie]

7 minutes ago, JohnMo said:

Super glue 

 

Like the cyanide based stuff? Might get a tube of Gorilla Glue, seems well thought of.

[-rick-]

1 minute ago, Super_Paulie said:

Like the cyanide based stuff? Might get a tube of Gorilla Glue, seems well thought of.

 

cyanoacrylate

 

Loads of brands, your local corner shop will have it, don't think it's gorilla glues thing though. They focus on urethanes and pva I think. I would go for cyanacrylate as its a very thin glue line and fast. Gorilla glue foams and might produce a less nice join.

[JohnMo]

7 minutes ago, -rick- said:

cyanoacrylate

Couldn't think of the chemical name.  Gorilla glue isn't the same.

 

Tiny tube that likes to stick your fingers together.

[Super_Paulie]

Probably the same as all the others I'd imagine. 

 

 

[-rick-]

Just now, Super_Paulie said:

Probably the same as all the others I'd imagine. 

 

Indeed!

 

[Nickfromwales]

If you use superglue, do NOT use too much as it won't sand back as quickly as the plaster / paint around it.

 

As it's plaster you could prob happily just use neat PVA, with the benefit of being able to wipe this with a wet cloth to clear away excess when wet.

 

Remember to stop the scrim tape well away from the edge as you defo do not want to catch that when tidying up after the plasterer with some sandpaper; I doubt they'll get them A1 so expect to have some faffing to do before paint.

 

Also, don't forget to take the centres off and remove the foam restrictor before (and put them bloody safe so you don't need to repair those!!).

[Super_Paulie]

1 hour ago, Nickfromwales said:

If you use superglue, do NOT use too much as it won't sand back as quickly as the plaster / paint around it.

 

As it's plaster you could prob happily just use neat PVA, with the benefit of being able to wipe this with a wet cloth to clear away excess when wet.

 

Remember to stop the scrim tape well away from the edge as you defo do not want to catch that when tidying up after the plasterer with some sandpaper; I doubt they'll get them A1 so expect to have some faffing to do before paint.

 

Also, don't forget to take the centres off and remove the foam restrictor before (and put them bloody safe so you don't need to repair those!!).

 

PVA eh? Any problems with it being above the shower though and reactivating? I guess not once it's been plastered and painted but thought I'd ask.

[Nickfromwales]

17 minutes ago, Super_Paulie said:

 

PVA eh? Any problems with it being above the shower though and reactivating? I guess not once it's been plastered and painted but thought I'd ask.

You're supposed to paint over these after they've been "finessed"  Raw plaster (of Paris) is not meant to be left on show afaik.

 

However, in real life, air will be continuously flowing here 24/7/365, so is it ever actually going to remain 'wet'? A: "No".

[Super_Paulie]

Bit quiet in here recently, so for your viewing pleasure...

Still need to paint the lid but these things look the b*ll*cks.

Edited Saturday at 17:38 by Super_Paulie

[Nickfromwales]

On 19/09/2026 at 18:38, Super_Paulie said:

but these things look the b*ll*cks.

Use your words lol.

 

“The dogs bollocks” .

 

When you see these, and then the standard valves you really do think “why did I fit these cheap ones in my beautiful new home?”.

 

There are some very nice intermediate options vs the ‘service station toilet’ ones……. 🤢🤮 so look at your options before buying; some which don't need the plaster-in skillset / time / money.

 

These are a doddle to do after the 1st ones in. 

[Super_Paulie]

2 hours ago, Nickfromwales said:

Use your words lol.

 

😱

 

As the cover is plaster of paris I assume it's mega thirsty when I paint it. Just go with the same process, mist coat then the Permawhite over the top?

[Nickfromwales]

4 hours ago, Super_Paulie said:

 

😱

 

As the cover is plaster of paris I assume it's mega thirsty when I paint it. Just go with the same process, mist coat then the Permawhite over the top?

Roller twice with trade white, and get your ass to the pub  

[Super_Paulie]

Done and done 🍺 

 

Edited 11 hours ago by Super_Paulie

[Nickfromwales]

56 minutes ago, Super_Paulie said:

Done and done 🍺 

 

Tres Bien, Rodders.   

[Oz07]

On 20/09/2026 at 16:06, Nickfromwales said:

Use your words lol.

 

“The dogs bollocks” .

 

When you see these, and then the standard valves you really do think “why did I fit these cheap ones in my beautiful new home?”.

 

There are some very nice intermediate options vs the ‘service station toilet’ ones……. 🤢🤮 so look at your options before buying; some which don't need the plaster-in skillset / time / money.

 

These are a doddle to do after the 1st ones in. 

Care to enlighten us on the intermediate options?

[Nickfromwales]

1 hour ago, Oz07 said:

Care to enlighten us on the intermediate options?

Indeed!

 

CVC are now getting more competitive:

 

Plaster in type

“Designer”, however some want these spray-painted in matt white

Or 

 

Ventilation land offer these. I can’t see why they wouldn’t work for supply and extract tbh.

 

More options out there in cyberspace, just needs a search. 

Enjoy. 
 

 

[torre]

We still need to choose our valves (and until we do can't cut the plenums to height). Plaster in do look great but are they hard to get perfect?

 

@Super_Paulie how tricky was plastering them in? I'd assumed there would be some sort of bead to plaster up to, to help keep the perfect roundness, but can't see any on your earlier unfinished pic.

 

@Oz07 these are heading up in price but seem easier to fit than the plaster-in type https://www.epicair.co.uk/products/haelix-rondo-valve-125mm (available square too)

[JohnMo]

It does look pretty - but who goes around looking at their ceiling, just looked up from the computer and realised I hadn't seen any of the MVHR terminals since my last service, where I replace the cone the filters in all extract points - can you do that with plaster in valves?

[Oz07]

55 minutes ago, torre said:

We still need to choose our valves (and until we do can't cut the plenums to height). Plaster in do look great but are they hard to get perfect?

 

@Super_Paulie how tricky was plastering them in? I'd assumed there would be some sort of bead to plaster up to, to help keep the perfect roundness, but can't see any on your earlier unfinished pic.

 

@Oz07 these are heading up in price but seem easier to fit than the plaster-in type https://www.epicair.co.uk/products/haelix-rondo-valve-125mm (available square too)

Jesus 45 quid for a bit of plastic.