Corrugated PVC roofing
Adrian Tyler
to make it an all (summer) weather place :).
Your average DIY shop has various grades of clear roofing and mini-profile
blue obscure stuff. What sort of lifespan can one expect from these types
of roofing, and what the best way to install it to avoid that noisy
creaking, as it
expands/contracts with the sunlight (or lack of) on it ?
Maybe I have overlooked some other materials, other than the expensive
polycarbonate stuff that belongs on top of conservatories :))
Advice appreciated
Adrian
Adrian Brentnall
>
> Considering covering a decked pergola thingummy, with a UPVC roof
> to make it an all (summer) weather place :).
>
> Your average DIY shop has various grades of clear roofing and mini-profile
> blue obscure stuff. What sort of lifespan can one expect from these types
> of roofing, and what the best way to install it to avoid that noisy
> creaking, as it
I'd guess 5 years - maybe more. Eventually the UV in the sunlight gets to it
and it goes brittle.
I don't think that you can stop it 'creaking' - it will expand / contract
with the temperature.
Depending on the dimensions of the area you have to cover you might be able
to get away with one sheet per 'sloping length' - this would reduce the
creaking. Alternatively, you could try using clear silicon to bond the
sheets together - but you'd run the risk of the expansion stressing in,
maybe? ISTR that the screw fixings need a 'clearance' hole drilled in the
plastic to allow the sheets to move a little.
>
> Maybe I have overlooked some other materials, other than the expensive
> polycarbonate stuff that belongs on top of conservatories :))
Can't think of a real alternative - the polycarbonate (twinwall /
triplewall) is good but expensive, you could use various sorts of rigid
plastic sheet - but that'll need more support than the corrugated, or, if
you want to be really fancy, you could use wired glass - but it's heavy and
will make your structure look like a bus shelter <g>.
Regards
Adrian
Suffolk UK
Nightjar
"Adrian Tyler" <Adrian...@btopenworld.com> wrote in message
news:9shuq2$rqa$1...@neptunium.btinternet.com...
The multi-wall polycarbonate roofing is supplied with an anti-UV coating on
one side that greatly extends its life, if you put it on the right way up.
There is also GRP roofing, which can be bought as clear, translucent and
coloured. Depending on the area, you could also look at acrylic sheet
(Perspex) which does not appear to be affected by UV - I have some that I
put up 20 years ago that is as clear and strong as the day it went up. Cast
acrylic is glass clear, but extruded acrylic is cheaper. You can get most of
these from a plastics wholesaler and the GRP roofing, usually, from a
builders' merchant.
Colin Bignell
G Fiendish
<Adrian...@btopenworld.com> wrote:
>Your average DIY shop has various grades of clear roofing and mini-profile
>blue obscure stuff. What sort of lifespan can one expect from these types
>of roofing,
I've had to go back over old planning applications to get the details
and dates.
I have one large extension building put up in June 1967 that used wire
re-inforced 3" corrugated clear "Marley clearglaze". Apart from two
areas that suffered physical damage (falling slate and an ivy "tree"
that was left too long to bounce up and down in the wind) the sheets
are in very good condition. Certainly not as clear as they were, but
several years of pigeon droppings (1) may have had something to do
with that. If still available I would strongly recommend this. It's
a sod to work with though - all those embedded wires just stick out
enough from cut edges to work like a saw on unguarded flesh.
In contrast the "uni-cem" corrugated sheeting I have on the top of a
Compton garage is extremely perished after just 12 years and will need
replacement this winter.
(1) When SWMBO suggests "oh! wouldn't it be nice to have a couple of
pairs of ornamental doves" discourage sternly. They breed and
defecate and rarely perform acrobatics.
GF
Adrian Tyler
"Nightjar" <nigh...@insertmysurname.uk.com> wrote
> The multi-wall polycarbonate roofing is supplied with an anti-UV coating
on
> one side that greatly extends its life, if you put it on the right way up.
> There is also GRP roofing, which can be bought as clear, translucent and
> coloured. Depending on the area, you could also look at acrylic sheet
> (Perspex) which does not appear to be affected by UV - I have some that I
> put up 20 years ago that is as clear and strong as the day it went up.
Cast
> acrylic is glass clear, but extruded acrylic is cheaper. You can get most
of
> these from a plastics wholesaler and the GRP roofing, usually, from a
> builders' merchant.
Thanks for the tips. I most definitely want to get away from the corrugated
roofing, because it looks ugly. The area to be covered is almost level so
there would be no pitch to any kind of roof, but enough for rainwater to run
off.
The cast acrylic appeals so I will dive into the yellow pages looking for
the plastics wholesalers.
Adrian
Stewart Duncan
now it is quite dirty with moss etc. If doing it again I would use coloured
sheeting.
"Adrian Tyler" <Adrian...@btopenworld.com> wrote in message
news:9shuq2$rqa$1...@neptunium.btinternet.com...
Tony Lewis
<Adrian...@btopenworld.com> wrote:
>
>Thanks for the tips. I most definitely want to get away from the corrugated
>roofing, because it looks ugly. The area to be covered is almost level so
>there would be no pitch to any kind of roof, but enough for rainwater to run
>off.
>
Is there enough support for snow which won't run off?
---------
TonyL
Simon
just replacing my conservatory roof, using corrugated plastic from
wickes. the main advantage seems to be that it is very cheap ( 7.50 for
3 m ) but its very clear ( compared to what is on there which must be
about 6 years old at least) It can be cut with scissors.
Graeme
<Adrian...@btopenworld.com> writes
>
>Thanks for the tips. I most definitely want to get away from the corrugated
>roofing, because it looks ugly. The area to be covered is almost level so
>there would be no pitch to any kind of roof, but enough for rainwater to run
>off.
>
>The cast acrylic appeals so I will dive into the yellow pages looking for
>the plastics wholesalers.
>
http://www.diy-plastics.co.uk/
I haven't used them, so can't comment on either products or service, but
I'm sure the link I saved must have come from someone in this group :)
--
Graeme
Hertford
Adrian Brentnall
> >The cast acrylic appeals so I will dive into the yellow pages looking for
> >the plastics wholesalers.
You could also look at
http://www.thebbgroup.co.uk/cashandcarryplastic.htm
These people supplied the triplewall sheeting for my greenhouse (3 sheets 2.1m
x 7m) - and offer a 50% discount on list price for orders placed over the
net...
As usual - I've no connection with them other than as a happy customer!
Regards
Adrian
Suffolk UK
Adrian Tyler
"Tony Lewis" <intot...@hotmail.com> wrote in message
news:3bed8edc...@news.cis.dfn.de...
SNOW??? not in Cheltenham anyway. The heaviest fall in the last decade was
8 inches in '92. I shouldn't overlook snow load, but I think I will on this
occasion :)). My biggest concern with any kind of roofing is if a strong
wind will lift it :)
Adrian
Tony Lewis
<Adrian...@btopenworld.com> wrote:
>
>"Tony Lewis" <intot...@hotmail.com> wrote in message
>news:3bed8edc...@news.cis.dfn.de...
>> On Sat, 10 Nov 2001 19:04:06 -0000, "Adrian Tyler"
>> <Adrian...@btopenworld.com> wrote:
>>
>>
>> >
>> >Thanks for the tips. I most definitely want to get away from the
>corrugated
>> >roofing, because it looks ugly. The area to be covered is almost level
>so
>> >there would be no pitch to any kind of roof, but enough for rainwater to
>run
>> >off.
>> >
>>
>> Is there enough support for snow which won't run off?
>
>
>SNOW??? not in Cheltenham anyway. The heaviest fall in the last decade was
>8 inches in '92. I shouldn't overlook snow load, but I think I will on this
>occasion :)). My biggest concern with any kind of roofing is if a strong
>wind will lift it :)
ah - the joys of global warming - no snow but bad storms :(
---------
TonyL
Stewart Duncan
span of 4 metres. A strong wind lifted three of the roof sections, luckily
they were not damaged nor did they hit anyone in the street where they
landed (30 metres away).
We now have a problem of what I would call thermal creep, the roof panels
heat during the day and expand, when they contract they are creeping down
the roof leaving a gap at the top. I am trying to device a method of
retaining them without putting too much pressure on any one point.news:9sn51v$num$1...@uranium.btinternet.com...
Adrian Brentnall
> 2 years ago we built a conservatory on my son's house. It is large with a
> span of 4 metres. A strong wind lifted three of the roof sections, luckily
> they were not damaged nor did they hit anyone in the street where they
> landed (30 metres away).
> We now have a problem of what I would call thermal creep, the roof panels
> heat during the day and expand, when they contract they are creeping down
> the roof leaving a gap at the top. I am trying to device a method of
> retaining them without putting too much pressure on any one point.
Are they only held in place by the capping strips ??
On my greenhouse (span 6m) we used ali capping strips and 'mushroom'-shaped
fixings that are screwed through into the rafters.... see
http://www.thebbgroup.co.uk/226261raftergasket.htm for details.
Without these fixings you stand a good chance of the sheet flexing in high
winds and popping out of the capping strips....
Regards
Adrian
Suffolk UK
Stewart Duncan
with that shown on the web site you mentioned (226/261 Rafter Gasket System)
but without the nylon fixing buttons. I shall buy these and fix some at the
mid point (lengthwise) and just above the bottom capping piece. Thanks
again.
"Adrian Brentnall" <amb_q...@dial.pipex.com> wrote in message
news:VA.0000394...@dial.pipex.com...
Adrian Brentnall
>
> Adrian, thank you for the info.. Our installation is virtually identical
> with that shown on the web site you mentioned (226/261 Rafter Gasket System)
> but without the nylon fixing buttons. I shall buy these and fix some at the
> mid point (lengthwise) and just above the bottom capping piece. Thanks
> again.
You'll need to buy a suitable drill to cut the hole that the 'button' requires
- think the details are on the website (if not then Screwfix sell them - it's
like hole saw - but quite small diameter - about 18mm ISTR). The buttons
should come with a foam gasket that makes them waterproof - you'll need the
right size button for the thickness of roof that you have...
Good luck - if you need further details then feel free to email me direct
Regards
Adrian
Suffolk UK