CalvinHobbes Posted June 22, 2023 Share Posted June 22, 2023 I have been asking for roof quotes and got these words 'Supply and fit pvc single ply roof with a welded standing seam' What does that mean? I get it means he single ply wood and the standing seam. Does it also include the other joinery up there like the rafters? Or is that a separate joiner who does that? It's confusing because I have a joiner who is offering to' leave it ready for whatever roof covering is going on so that includes the vertical covering front and back.' So both seem to be offering to do the ply. Sorry for all the daft questions. Link to comment Share on other sites More sharing options...
makie Posted June 22, 2023 Share Posted June 22, 2023 No, that would be done before they come in. 1 Link to comment Share on other sites More sharing options...
CalvinHobbes Posted June 22, 2023 Author Share Posted June 22, 2023 Ah right adhd leaves me struggling with the way certain things are phrased. Cheers. Link to comment Share on other sites More sharing options...
Temp Posted June 23, 2023 Share Posted June 23, 2023 The word "ply" in "single ply" means "one layer". So the quote is just for provding and fitting the PVC layer 9f the roof not the plywood. You need your joiner to fit any plywood needed. I haven't come across PVC roofing before. I think most people use EPDM or Fiberglass on flat roofs. 2 Link to comment Share on other sites More sharing options...
Kelvin Posted June 23, 2023 Share Posted June 23, 2023 (edited) We used Alwitra VSK for ours. We probably should have used Sarnafil in hindsight as there are several trades in the area that specialise in it whereas no one has experience of Alwitra and I had to use a Glasgow based company. Make sure your joiner gets the plywood deck as flat and smooth as possible and make sure the flat roofers are meticulous in brushing any crap off the deck. The single ply stuff will show up any imperfections on the roof. The other thing to be clear about is the order all the overlapping trades need to work in. This has caught me out requiring a second visit to complete the flat roof that wasn’t in the original quote. Edited June 23, 2023 by Kelvin Link to comment Share on other sites More sharing options...
saveasteading Posted June 23, 2023 Share Posted June 23, 2023 9 hours ago, CalvinHobbes said: What does that mean? I The explanations above are correct. It's not ideal that the waterproofing ply goes onto timber ply by someone else.....someone is better to have thd whole responsibility. The waterproofing g man should have to at least approve the deck before working on it. Don't be shy to ask for clarification of what is not included and what is expected. 1 Link to comment Share on other sites More sharing options...
nod Posted June 23, 2023 Share Posted June 23, 2023 Also make sure that when your joiner has finished and the plywood is down The whole roof will need a temporary waterproof cover As one heavy shower will ruin it 2 Link to comment Share on other sites More sharing options...
saveasteading Posted June 23, 2023 Share Posted June 23, 2023 In my experience, joiners of all the trades, have the most understanding of previous and following trades, so get his input and discuss what the intentions are. 1 Link to comment Share on other sites More sharing options...
CalvinHobbes Posted June 23, 2023 Author Share Posted June 23, 2023 Thank you. Really, that helps so much. I was going back to that roofer because he has a really good reputation and we want him to update his quote for the corrugated galvanised steel. We saw it on another house done by our architect and it was excellent. Link to comment Share on other sites More sharing options...
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