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Roofing

Awful polycarb roof what are my options

I have a poly carb lean-to pitched roof, its at the end of its life.

I insulated most of the underside with 100mm celox and covered this with mdf - bit of a bodge solution to last me a few years. This has meant the space is usable year round now, excellent! A small section is insulated to act as a "rooflight" - so its still clear.

The structure is 47x 150mm purlins (ie running side to side not like rafters) spanning 4.3m onto single skin blockwork - so the whole thing is a bit of a cheap structure. I cant really justify knocking down and building again (unless someone wants to offer a really good quote ;) )

So what options do I have for this space?

A) More polycarb - thermal performance will be improved very slightly over the existing and it at least wont be yellow and leaky etc. Its also see-through so lets in light, but its not as cheap as it should be given its a fairly rubbishy solution.
B) Metrotiles - light are they cheap? Dont know how I fit these given I only have purlins - 12mm osb deck over the purlins tiles on top? Means I would also need to fit a velux to continue to get the light into the space.
Looks better and less of a naff solution, but not totally sold on how good metroltiles look - thoughts?
C) Tiles - not sure I have the structure to support these??
D) EDPM - light, cheap can fit a velux - but its a lean too roof and this stuff arguably looks bad on a pitched roof which is clearly seen from the back garden.
E) Standing seam EDPM type roof - looks smarter? All the benefits of EDPM.
Thoughts?

I have been putting off doing this job for 6 years, and now the crunch point is here. I cant really bear just to replace naff polycarb with renewed stuff, but if that is the best option so be it. But I would really love some thoughts and input.

Many thanks in anticipation.

V

2 Answers from MyBuilder Roofers

hi without looking i could only sugestrunning new 4x2 timber rafters than batten and slate useing lightwait man made slates like eternite

2017-06-02T11:50:02+01:00

Answered 2nd Jun 2017

Timber rafter and battern it out and put some
Nice
New tapco slates on to give it a solid roof, insulate etc for a useable room all year around :)

2017-06-02T21:25:01+01:00

Answered 2nd Jun 2017

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