Installing a ceiling in Conservatory

[adam1984]

Hi All,

I am mulling over the idea of installing a ceiling in my conservatory.

At the moment I have an Everest conservatory with a Polycarb roof.

I have been searching online and have come across several companies who are installing ceilings onto the underside of the conservatory roof by fixing timber battens and then either plasterboarding or UPVC cladding onto them.

From my understanding they are directly fixing the timber battens onto the roof Ali frame with screws.

My plan (if I go ahead) is to:

Fix 2x1 timber battens Vertically along the conservatory roof bars.
Fix Superquilt insulation to battens.
Fix 2x1 timber batten horizontally to vertical timber battens.
"wedge" 20/25mm Cellotex between timber framing.
Fix 1800x900x9.5mm Plasterbaords to Battens.
Skim

Now the issue I have is can the ali roof bars take this weight?

Roof is approx 11m2

Plasterboards fixed direct to Timber weighs 11kg / m2 according to the British Gypsum White book giving an overall load weight of 121kg plus the weight of insulation / battens / plaster

Any thoughts or advice is greatly received.

Adam

 

[God]

http://www.prefixsystems.co.uk/?page_id=495

 

[s60tsy]

i always think that you would get problems with the plastered option because of the expanding and contracting of the ali&upvc roof, also you wouldn't know if there was a leak till the plaster is fubar'ed. ive seen the cladded roofs which the roof would definately take the weight of, and if you do this yourself you can save a wedge. looks poo to me though (only my opinion). Guardian do a full tile effect and plastered roof but they are very expensive

 

[foxhole]

You don't want anything black or reflective just below the polycard roof as it will bounce the heat back which could in extreme weather melt the roof.

 

[s60tsy]

I wouldn't go that far

 

[geraldthehamster]

I've not done this myself but am not convinced it's a good idea.

If the roof has extra weight attached it might be more likely to deflect, and leak.

If the roof leaks you won't see the leak until it starts rotting your timbers.

Any cracks or gaps in the plasterboarded finish could let moist air through from below, and cause condensation, also rotting your timbers.

You might be better off replacing the whole roof with a timber one, but then will the conservatory structure support it?

Cheers
Richard