Roofing

Awful polycarb roof what are my options

Anonymous user 28/02/2024 - 3.28 PM

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