Wood wool boards - batten?

[a twig]

So, the time has come to tackle the last challenge, the living room! Original lime plaster has been skimmed with gypsum and has blown, so is all coming off.

After some eyewatering quotes for lime plastering, I am going to tackle it myself, to make things as easy as possible, I was thinking wood wool boards with an NHL skim, as I have successfully done elsewhere in the house in small repair areas.

Previously I have attached the boards directly to the walls, but to allow for services etc, this time I'm considering battening first. Any thoughts? Should I put strips of foil between the battens and the wall to protect the battens?

Or should I just stick to whacking the boards directly to the walls?

 

[paulc]

Should I put strips of foil between the battens and the wall to protect the battens?

I'd get a roll of DPC material such as this: https://www.screwfix.com/p/capital-valley-plastics-ltd-damp-proof-course-1968ga-black-30m-x-100mm/42073
Cut it down in width to suit your battens and fit between wood and wall. Cheap and effective.

 

[george2019]

Is this insulating wood wool (pavatherm, Steico etc) or plasterboard alternative stabilised wood fibres?

If it's the former, a cavity would potentially be a condensation risk in a high occupation room and I'd stick with the (usual) manufacture's detail of zero cavity.

Being concerned about moisture in the wall makes me think it might not be the right detail - if there's enough water to rot timber then the insulating value of the water will be massively reduced and all you have to hold the heat in will be a 15mm wood wool board. If the wall is thick/dry/warm enough that you're not concerned about insulation or causing a condensation trap then should be OK without any sort of DPC or protection anyway.

 

[a twig]

It's the latter - alternative to plasterboard to save me doing three coats of lime plaster!

The wall is already a foot thick so not worried about insulation - the only reason I was thinking of battens was to make levelling out the walls easier and making it easier to re-run services.

Having not battened and boarded before I was unsure of best practice, and Google was mainly giving me answers about foil backed plasterboard...

 

[numberwang]

I’ve used wood will board on battens as replacement for what I would call ‘diagonal 90’s service station style wooden cladding’ any joins I reinforced with mesh. Like you there is void behind but filled with insulation. I used hemp lime on top and was fine. Good luck!

 

[johnbanshee]

So, the time has come to tackle the last challenge, the living room! Original lime plaster has been skimmed with gypsum and has blown, so is all coming off.

After some eyewatering quotes for lime plastering, I am going to tackle it myself, to make things as easy as possible, I was thinking wood wool boards with an NHL skim, as I have successfully done elsewhere in the house in small repair areas.

Previously I have attached the boards directly to the walls, but to allow for services etc, this time I'm considering battening first. Any thoughts? Should I put strips of foil between the battens and the wall to protect the battens?

Or should I just stick to whacking the boards directly to the walls?

Hi

What did you do in the end - and how has it performed - anything you have done differentyly with hindsight?

JB

 

[a twig]

This is what I ended up doing and was very happy with the results

https://www.periodproperty.co.uk/forum/threads/plastering-question.16738/post-243367

 

[johnbanshee]

This is what I ended up doing and was very happy with the results

https://www.periodproperty.co.uk/forum/threads/plastering-question.16738/post-243367

Perfecto - that thread has all the answers to my exact questions on it!

 

[Kearn]

No gap, the ideal is to have a continuous solid mass to avoid condensation and a cold spot. It’s difficult to fix the boards to a wall without leaving air pockets even without battens. Approach then is generally, plaster, stick board to it, plaster.

 

[Kearn]

No gap, the ideal is to have a continuous solid mass to avoid condensation and a cold spot. It’s difficult to fix the boards to a wall without leaving air pockets even without battens. Approach then is generally, plaster, stick board to it, plaster.

Ah. Just seen the date of your original Q @a twig