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Author Topic: Ideas for shallow angle roofing materials needed.  (Read 7367 times)
Bodidly
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« on: March 10, 2016, 07:44:18 PM »

Hi all

Got to fix up my parents porch roof. This is on a none too fancy farmhouse and has asbestos or cement big six roofing sheets currently. There are also a few plastic clear panels as well and these have cracked and come to the end of their days. It's all at about five degrees. The porch is unheated beyond what escapes into it when the inner door is opened and no plans to ever heat this space. Wondering what cost effective options there are for shallow roofs other than flat roof style construction and various corrugated sheets profiles.

Thanks
Beau
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gravyminer
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« Reply #1 on: March 10, 2016, 07:58:38 PM »

Sarnafil seems to be the architects wet dream roof covering nowadays.

It allows them to design stupid shapes  like roof ponding for planting and very slack or varying gradients.
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gravyminer
Bodidly
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« Reply #2 on: March 11, 2016, 10:19:54 PM »

Thanks gravyminer

Anyone else got any suggestions?
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guydewdney
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« Reply #3 on: March 11, 2016, 10:25:28 PM »

grp fibreglass. comes in a kit in my local indy builders merchant.
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desperate
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Backache stuff!!


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« Reply #4 on: March 11, 2016, 11:02:04 PM »

There are pressed steel sheets that have a tiled look especially when it gets a bit weathered not sure if it can do 5 degrees though.

Desp
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biff
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« Reply #5 on: March 11, 2016, 11:07:04 PM »

Esso butyl gave great results years ago.
                            You just buy the sheet ready made up, cover the roof in ply and stick the sheet on,then put an alloy trim around the raised edge..cover with 50mm of poly and 2mm chips and you have a warm sound roof for an outrigger or little lean to porch. It looks good too.
                                                                             Biff
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Warble
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« Reply #6 on: March 11, 2016, 11:40:35 PM »

Onduline can be laid at 5 degrees provided you take care at the joints. A membrane should be laid under it to stop condensation drips in frosty weather.
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Bodidly
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« Reply #7 on: March 12, 2016, 07:17:10 AM »

OK now we have some more ideas flowing. Often wonderd about the tiled look steel sheets Desp. Presuming you mean like the sort mentioned on this page? http://www.cladco.co.uk/installation-guides/which-right-type-sheet#tile-sheet-heading

One snag with all the options mentioned is how do you put skylights or clear panels into a flat roof type construction? Not keen on Onduline as seen this on some stables and it's now falling apart after about ten years but maybe there are various qualities. On the other hand would be doddle to instal and presume you can get clear sheets of the same profile.
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bxman
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« Reply #8 on: March 12, 2016, 08:34:28 AM »

http://www.metrotile.co.uk/

is one of the firms possible know someone that used them 5 years ago could check on experience  if it would be any help

not sure of the 5 deg though  a quick phone call would confirm though .
cheers Patrick
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biff
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« Reply #9 on: March 12, 2016, 08:50:09 AM »

Biff Whispers to beau,,
                   "ESSO BUTYL"
                                  Biff,
   A little roof 10ft x 10ft with sheets , alloy trim, Insulation and chips, under 400.00.?
   Very easily and successfully (neatly)flashed onto the main roof,
    No I am not an agent but this stuff pulled me out of a jam more than a few times,
                                                     Biff
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Bodidly
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« Reply #10 on: March 12, 2016, 09:09:25 AM »

Noted Biff but would rather look at sheet options first before having to cover the whole roof in OSB to then cover again with waterproof membrane  Smiley
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Nickel2
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« Reply #11 on: March 12, 2016, 09:52:03 AM »

How big is this roof and how does it butt-up to the house? If it is a small roof, it may not be too eek-spensive to increase the pitch by re-timbering, then re-tile with reclaimed tiles to match the rest of it. Gives room for insulation then. (not my wallet Roll Eyes !)
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Countrypaul
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« Reply #12 on: March 12, 2016, 09:55:41 AM »

I am renovating a dormer bungalow and the flat roofs at the rear have a 1 in 80 fall (someone convert that to degrees but it can't be much). There are 3 flat roofs, all of which we hae done with butyl rubber. The roofs are SIPS, but we have to overboard with plywood as the roofers said that the butyl would not glue to the OSB properly. The largest roof is 10 x 2.5 metres with a parapet wall on 3 sides the other being the sloping roof down onto the flat roof but it was still done in one piece.

The roofers said that some butyl rubber roofs have been around 50years now without problems, I know there is a guarantee - but it isn't 50 years!
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MR GUS
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« Reply #13 on: March 12, 2016, 10:12:33 AM »

Hope not to drag too off topic, however what is the scenario with re-roofing (generally) with different materials these days? ..farmhouse presumably on it's own compared toa regular "estate" house of mirror images over 100's of homes.

The regular, old faithful tiles are weighty but cheap (en masse), what sort of restrictions do folk tend to encounter with different roofing materials (visible in the surrounds to differ)?

You could argue a toss to a council spod that ripping up a garden & bricking it for parking makes it considerably different from everyone elses clone, but they won't listen to that will they because it's a common event.
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« Reply #14 on: March 12, 2016, 10:25:35 AM »

1.5 m2  PV laminated glass panel   costs about 20 -25  and delivers 100  watt


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