I am thinking of making some insulating panels wrapped in fabric which I
can mount between the joists of a glass roof extension just with velcro
or pegs or plastic strips or something, so exposed to the inside of the
house. Maybe polystyrene plus a thin foil layer, maybe just
polyeurethane - Celotex type material, maybe something else like mineral
fibre between sheets of hardboard. should I worry about odours? does
celotex smell? and should I worry about fire resistance?. Is there any
reason why these materials can't be used uncovered by plasterboard?

tim W

If you want more detail - a glass roofed extension is too hot and way
too bright in Summer and a bit chilly in winter. Glass panels (something
like 6mm, 20mm, 6mm with coatings)sit on painted joists about 150 x 40
at 850 centres. Have been thinking about blinds, stuffed fabric things,
elastic and pulleys but I think the cheap, simple and effective method
might be to cut foam panels, cover them with fabric sit them between the
joists on L section plastic or aluminium strips. they might need to be
brought down for cleaning but I suspect once they are in place they will
stay in place Summer and Winter reducing the glass area and insulating.

On Saturday, 23 July 2016 15:37:26 UTC+1, TimW wrote:
I am thinking of making some insulating panels wrapped in fabric which I
can mount between the joists of a glass roof extension just with velcro
or pegs or plastic strips or something, so exposed to the inside of the
house. Maybe polystyrene plus a thin foil layer, maybe just
polyeurethane - Celotex type material, maybe something else like mineral
fibre between sheets of hardboard. should I worry about odours? does
celotex smell? and should I worry about fire resistance?. Is there any
reason why these materials can't be used uncovered by plasterboard?

tim W

If you want more detail - a glass roofed extension is too hot and way
too bright in Summer and a bit chilly in winter. Glass panels (something
like 6mm, 20mm, 6mm with coatings)sit on painted joists about 150 x 40
at 850 centres. Have been thinking about blinds, stuffed fabric things,
elastic and pulleys but I think the cheap, simple and effective method
might be to cut foam panels, cover them with fabric sit them between the
joists on L section plastic or aluminium strips. they might need to be
brought down for cleaning but I suspect once they are in place they will
stay in place Summer and Winter reducing the glass area and insulating.

Any breeze will cause hem to lift/blow away if lightweight.
You can buy metal strips that poke up the cells of the polycarbonate sheets (if that's what you have).

On 23/07/16 15:37, TimW wrote:
I am thinking of making some insulating panels wrapped in fabric which I
can mount between the joists of a glass roof extension just with velcro
or pegs or plastic strips or something, so exposed to the inside of the
house. Maybe polystyrene plus a thin foil layer, maybe just
polyeurethane - Celotex type material, maybe something else like mineral
fibre between sheets of hardboard. should I worry about odours? does
celotex smell?

Not at all (and I have used loads of it recently, 3 different brands).

The only thing it will do is drop dust from the edges - so wrap some
"Idenden" (made by Bostik) foil tape over the cut edges if that's likely
to be a problem.

and should I worry about fire resistance?. Is there any
reason why these materials can't be used uncovered by plasterboard?

No.

Celotex is usually treated so as not to propagate flame, but if flame
gets to it it will produce loads of black noxious smoke, similar but
worse than polystyrene.


tim W

If you want more detail - a glass roofed extension is too hot and way
too bright in Summer and a bit chilly in winter. Glass panels (something
like 6mm, 20mm, 6mm with coatings)sit on painted joists about 150 x 40
at 850 centres. Have been thinking about blinds, stuffed fabric things,
elastic and pulleys but I think the cheap, simple and effective method
might be to cut foam panels, cover them with fabric sit them between the
joists on L section plastic or aluminium strips. they might need to be
brought down for cleaning but I suspect once they are in place they will
stay in place Summer and Winter reducing the glass area and insulating.

On Saturday, 23 July 2016 15:37:26 UTC+1, TimW wrote:
I am thinking of making some insulating panels wrapped in fabric which I
can mount between the joists of a glass roof extension just with velcro
or pegs or plastic strips or something, so exposed to the inside of the
house. Maybe polystyrene plus a thin foil layer, maybe just
polyeurethane - Celotex type material, maybe something else like mineral
fibre between sheets of hardboard. should I worry about odours? does
celotex smell? and should I worry about fire resistance?. Is there any
reason why these materials can't be used uncovered by plasterboard?

tim W

If you want more detail - a glass roofed extension is too hot and way
too bright in Summer and a bit chilly in winter. Glass panels (something
like 6mm, 20mm, 6mm with coatings)sit on painted joists about 150 x 40
at 850 centres. Have been thinking about blinds, stuffed fabric things,
elastic and pulleys but I think the cheap, simple and effective method
might be to cut foam panels, cover them with fabric sit them between the
joists on L section plastic or aluminium strips. they might need to be
brought down for cleaning but I suspect once they are in place they will
stay in place Summer and Winter reducing the glass area and insulating.

Polystyrene is a disaster in a fire. It spreads it rapidly, producing thick toxic smoke. I wouldn't consider that option.

Some sort of blind is proably all it needs.


NT

On 23/07/16 20:06, wrote:
On Saturday, 23 July 2016 15:37:26 UTC+1, TimW wrote:
I am thinking of making some insulating panels wrapped in fabric which I
can mount between the joists of a glass roof extension just with velcro
or pegs or plastic strips or something, so exposed to the inside of the
house. Maybe polystyrene plus a thin foil layer, maybe just
polyeurethane - Celotex type material, maybe something else like mineral
fibre between sheets of hardboard. should I worry about odours? does
celotex smell? and should I worry about fire resistance?. Is there any
reason why these materials can't be used uncovered by plasterboard?

tim W

If you want more detail - a glass roofed extension is too hot and way
too bright in Summer and a bit chilly in winter. Glass panels (something
like 6mm, 20mm, 6mm with coatings)sit on painted joists about 150 x 40
at 850 centres. Have been thinking about blinds, stuffed fabric things,
elastic and pulleys but I think the cheap, simple and effective method
might be to cut foam panels, cover them with fabric sit them between the
joists on L section plastic or aluminium strips. they might need to be
brought down for cleaning but I suspect once they are in place they will
stay in place Summer and Winter reducing the glass area and insulating.

Polystyrene is a disaster in a fire. It spreads it rapidly, producing thick toxic smoke. I wouldn't consider that option.

Some sort of blind is proably all it needs.



Heavy interlined curtains for vertical windows, with UV resistant linings.

AS longs as the windows have no draughts, adding those essentially add a
windows cill depth insulation barrier.

And in summer, draw them in the day and close the windows. Open the
windows at night to let cooler air in

THat's assuming a concrete floor to act as a 'cool bank' by day.




NT



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