What do people think about this?
http://www.screwfix.com/prods/74221/Building/Corrugated-PVCu-Sheeting/Ariel-Vistalux-Corrugated-ASB-3-PVC-Sheet-Clear-2-44-x-0-76m-Pk10#
It's cheap, does the job but I much prefer flat twin wall for looks and it's easier to fit, stronger (won't collapse under the weight of snow and needs less cross beam support than corrugated IMHO
quote:
Originally posted by snapper
It's cheap, does the job but I much prefer flat twin wall for looks and it's easier to fit, stronger (won't collapse under the weight of snow and needs less cross beam support than corrugated IMHO
I am just about to do the same thing, and have found that Wickes have 4m x 900mm x 10mm twinwall sheets for £50, the metal glazing strip is £25 at 4m
long. I am sure that they do shorter sheet cheaper too.
Over corrugated the other factor is wind, imho corrugated rattles and rattles, the twinwall is quiet.,
hope that helps
On my car port which is 3m x 10m i used the twin wall sheet. It was expensive ( £120/sheet) and i needed 5 sheets, but it was easy to put up, and cut to size. It also easily took my weight while i was on top of it fixing it down to the timber... the thin corrugated stuff wouldnt have taken my weight, and i find its always quite brittle, and chips/shatters whilst trying to cut it
That's the stuff mine is done in. I think B&Q do longer sheets though.
It's light, easy to work and has survived the last two winters without too much drama. But then I do go out and scrape the snow off the leading
edge, allowing it to slide down, keeping the weight down.
My B+Q plastic corrugated roof has been up about 12 years now. 1 hole where I poked a long something through it, but never got round to repairing (it
is a car port, not a garage after all, and the drips don't land on anything other than the ground)
The weatherproofing at the wall edge is not easy, I used the self-adhesive aluminium flashing tape and it works fine UNLESS there is heavy rain and a
strong wind blowing the water up the roof. Very rare. And indeed just about the cheapest solution.
Twinwall nicer, but when you add the glazing bars it gets rather pricey in comparison. Saying that, when it gets re-roofed the missus may have a word
[Edited on 25/1/11 by cliftyhanger]
I would not use that stuff again. I've got a south-facing lean-to shed that I've re-roofed 3 times. PVC sheet only lasts a couple of years
in sun before it gets brittle and starts to break at the fixings with wind lift. It loses all impact strength - the last roof was holed by a Nov 5th
rocket, the previous one by an apple.
I covered it last time with GRP corrugated sheet (eBay) as used as rooflights in barns etc. - vastly superior, will take my weight with a spreader
board with no problems at all. It's only been on a year but shows no sign of deterioration.
What about this
Better...but still nearly twice the cost of corrugated...
Product Code Description unit price Qty Cost
246000 2.5m x 700 x 10mm 19.09 9 171.81
164052 Universal Glazing Bar 16.99 8 135.92
164066 Clear End Closure 2.1m 3.19 7 22.33
164058 Universal Edge Flashing 3m 7.29 2 14.58
Total 344.64
Anyone seen cheaper anywhere???
not seen it cheaper. But I have made up my mind that is the correct route.
So, the next search is for Wickes discount codes etc,....
Bit cheaper, with bigger sheets...
www.nick-gray.co.uk
Product Code Description unit price Qty Cost
BMPC10CPCM 10mm Clear Twinwall Polycarbonate Sheet 1050mm x 2500mm 30.12 6 180.72
NDTSGB25W Timber Supported Snapdown Glazing Bar White 2.5 Metres 15.24 5 76.2
LSSC10W Sheet Closure for 10mm White 2.1 Metres 5.12 7 35.84
LSP10FS3W Plastic F Section for 10mm Polycarbonate Sheet White 3 Metres 6.22 2 12.44
Total 305.2
just finished my mega 5m x 6m carport 
I used clear B&Q corrugated sheeting that has a flat bottom between the bumps if that makes sense...
3m lengths and 11 of them, easy to fit but took ages to, strong wind makes it impossable
easy to use, I cut with a dremel on full blast and a side cutter bit.
Buy the fittings in bulk as I used masses of them and B&Q only sold them in packs of 10! so that worked out quite expensive, would rather have
bought them in packs of 100 at least
The thin stuff I have is more than stong enough for snow but will shatter if say a tile on the garage slid though it, I'm on a budget so was not
willing to double the price for the thicker stuff.
The foam filler pieces are good to stop the rain being blown under the sheet and make the roof less likely to be damaged by wind, do check you have
the right type as there are a few.
Totally delighted with my carport as the cars are bone dry now and no more snow or frost 
[Edited on 25/1/11 by Mr Whippy]
For car ports I think box profile steel is the best and quite cheap, I know it's not clear but makes a much better and stronger roof than any
plastic.
The price of it is about 5 pounds a running metre so your 6x4roof would be 24 sq metres x 5pounds =120 quid plus some fixings say 20 pounds.
Regards Denis.
quote:
Originally posted by kipper
For car ports I think box profile steel is the best and quite cheap, I know it's not clear but makes a much better and stronger roof than any plastic.
The price of it is about 5 pounds a running metre so your 6x4roof would be 24 sq metres x 5pounds =120 quid plus some fixings say 20 pounds.
Regards Denis.
stevebubs
Around 5 quid is industry standard price, try hornsey steels tel 01547-530 419.
Polyester coated 0.5 mm any colour from Jacksons. 5-75 quid.01904-400-215 (all plus vat)
Or just google box profile roofing for some-one near you.
Regards Denis.
Ah...managed to find some pics. Yes, seen that - not too keen on the aesthetics - SWMBO may not be impressed...would need to see it in the flesh before deciding..
That standard corrugated stuff is all we have had on our car port for decades. It's been re-roofed a couple of times, once due to 80mph gusts coming at it head on, the other due to a falling roof tile. Seems pretty hardy for a cheap easy option.
quote:
Originally posted by coyoteboy
That standard corrugated stuff is all we have had on our car port for decades. It's been re-roofed a couple of times, once due to 80mph gusts coming at it head on, the other due to a falling roof tile. Seems pretty hardy for a cheap easy option.
0.8mm stuff:
31599 Ariel Vistalux Corrugated ASB 3" PVC Sheet Eavesfiller 650mm Pk24 15.85 2 31.7
78225 Ariel Vistalux Corrugated ASB 3" PVC Sheet Fixings Pk200 17.89 1 17.89
62744 Ariel Vistalux Corrugated ASB 3" PVC Sheet Flashing 695mm Pk6 23.99 2 47.98
74221 Ariel Vistalux Corrugated ASB 3" PVC Sheet Clear 2.44 x 0.76m Pk10 102.15 1 102.15
Total 199.72
1.1mm stuff is about £50 more...so approaching the cost of twinwall....
If I were to felt it (as per a shed), what would I need to do...presumably lay some marine ply (thickness?) across the trusses and then just felt it, and baton the edges?
Something like this, perhaps..
http://www.wickes.co.uk/Roofing-Shingles-Red-20-sq-m/invt/164088
after all the discussions, this is what I built, 6x2" joists, and then 10mm triple wall polycarbonate
Now the car is snug and warm in the dry,
thanks