conservatory insulation

Ro

Hi

I have a large 36 sq metre conservatory with a polycarbonate roof (its freezing in winter/boiling in summer), and I need to make it habitable.
I had been hoping to screw batons to the polycarbonate, add insulation and then plasterboard as a cheaper option too a new conservatory but have been told that this type of Polycarbonate is unsuitable for this as there is nowhere to secure the screws to as the panels slot together and lack the necessary joists parts needed to screw into. Has anyone come across this and how can I fix the problem? Or is there another solution like using some kind of specialist adhesive to secure the batons?
Thankyou
Pic attached 

Doozergirl

Is that your kitchen?  You must be freezing!  

Do you realise that the house is un mortgageable like that?  Who did that work? 

The polycarbonate isn't strong enough to carry anything.  I'm not sure what to say.  It's quite shocking to consider that it would be habitable.  

You do have a steel there capable of
holding joists halfway from the main house wall,  but nothing capable to the window.
You also get those vastly overpriced conservatory roof people, but I can't see how the quality of build warrants that expenditure.  
 

grumbler

Doozergirl said:

You do have a steel there capable of holding joists halfway from the main house wall,

Absolutely. Joists/rafters + insulation between them (+ vapour barrier?) + (insulated?) plasterboard.

Then a stud wall under the steel will make half of the space more or less habitable.

Most likely, no building control will approve this though.

FreeBear

Doozergirl said: ou do have a steel there capable of holding joists halfway from the main house wall,  but nothing capable to the window.

It might be possible to fix the joists in to the main wall and cantilever over the steel, but it is a pretty big span to do that, A better solution would be to have a steel (or large timber) inserted over the window along with suitable vertical supports either side - Going to look ugly, but... Once joists are in place, 100mm of Celotex/Kingspan, plasterboarded internally, and an EPDM coating externally would give the OP a nice warm roof. But I'm guessing that the slab is uninsulated and the dwarf walls are only a single brick width. Still going to be a pig to heat and cold in the winter. A proper roof is also going to be quite expensive.

There is going to be issues when the house is sold - No building regs approval, low grade construction, etc... A long term solution would be to demolish and build a proper extension. This would provide a comfortable space that could be used all year round and add value to the property.

tonyh66

Is that the conservatory you were having built back in July? oh dear......

Doozergirl

tonyh66 said:

Is that the conservatory you were having built back in July? oh dear......

Please no 😱

DiddyDavies

Doozergirl said:

tonyh66 said:

Is that the conservatory you were having built back in July? oh dear......

Please no 😱

I don't think that it could be for the simple reason that the OP stated that the conservatory is freezing during the winter and if it was only erected in July of this year, it wouldn't have been up for any part of a winter.

williamgriffin

Ro said:

Hi

I have a large 36 sq metre conservatory with a polycarbonate roof (its freezing in winter/boiling in summer), and I need to make it habitable.
I had been hoping to screw batons to the polycarbonate, add insulation and then plasterboard as a cheaper option too a new conservatory but have been told that this type of Polycarbonate is unsuitable for this as there is nowhere to secure the screws to as the panels slot together and lack the necessary joists parts needed to screw into. Has anyone come across this and how can I fix the problem? Or is there another solution like using some kind of specialist adhesive to secure the batons?
Thankyou
Pic attached 

W.T.F!

Silvertabby

That's not a conservatory - it's a cheap lean to.  Best thing would be to knock it down and replace it with a proper extension.

Anything else will just be a waste of money,