chocccie Posted July 17, 2007 Share Posted July 17, 2007 I'm soon fitting my house with new waste pipes - do you have a recommendation for the best glue to use please?Thanks Link to comment Share on other sites More sharing options...
Jerac Posted July 17, 2007 Share Posted July 17, 2007 It is not a glue as such, but a gel of pvc solvent which temporarily dissolves the surfaces and then evaporates leaving a solid joint.http://www.diyfixit.co.uk/nflash/plumbing/WasteSolv/WasteSolv.htmIn the UK it is called Solvent Weld Cement, in France Colle PVC. Usually found in bricos at the end of the shelves for PVC pipes. Available in a tube or a small screw top can. Link to comment Share on other sites More sharing options...
chocccie Posted July 17, 2007 Author Share Posted July 17, 2007 Well, you can't get more helpful and specific than that!Thanks very much Jerac Link to comment Share on other sites More sharing options...
shimble Posted July 17, 2007 Share Posted July 17, 2007 ps think i'm right in thinking that you should slide the pipes together but not twist them as this breaks down the seal or something it was explained to me but i cant remember exactly.... if anyone can go further........ Link to comment Share on other sites More sharing options...
Jerac Posted July 17, 2007 Share Posted July 17, 2007 Cut the pipe and de-burr the cut ends, otherwise the pipe will jam.Assemble the joint dry and with a felt tip mark the pipe for both the depth into the joint and the angle of the pipe into the fitting.Disassemble and deglaze the surfaces with some fine sandpaper and wipe any dust off.Apply the cement all round both surfaces - time is critical from hereon in. Assemble the joint with a twisting motion to spread the solvent and melted pvc around the joint BUT WORK QUICKLY as you have only a few seconds to get the felt tip marks in line. Suddenly the weld will 'grab' and from then there is no way back. Link to comment Share on other sites More sharing options...
John L Posted July 17, 2007 Share Posted July 17, 2007 [quote user="Jerac"]Assemble the joint with a twisting motion to spread the solvent and melted pvc around the joint BUT WORK QUICKLY as you have only a few seconds to get the felt tip marks in line. Suddenly the weld will 'grab' and from then there is no way back.[/quote]You have confirmed what I thought should be done when assembling the pipes. However the instructions in French seem to indicate that the joint should be assembled without twisting.Which method is correct? Link to comment Share on other sites More sharing options...
Anton Redman Posted July 17, 2007 Share Posted July 17, 2007 Everytime I have used the method described above the pipes haved jammed together so tight on test assembly that even after I have turned green and burst out of my shirt I cannot seperate them. Link to comment Share on other sites More sharing options...
Ford Anglia Posted July 18, 2007 Share Posted July 18, 2007 I don't know what the glue actually IS but it don't half smell exactly like Bostik. Link to comment Share on other sites More sharing options...
Jerac Posted July 18, 2007 Share Posted July 18, 2007 It is important to deburr the pipes before test assembly, but only sandpaper to deglaze the surfaces after the test assembly, otherwise they can stick as if glued.As to the twist/no twist question I have seen both methods advocated. The twist, if applied, is only a slight twisting motion and not a screwing together. I prefer to apply a twist to ensure a good distribution of the melted pvc, but as I said before care is needed to avoid the weld grabbing whilst the joint is out of alignment Link to comment Share on other sites More sharing options...
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