craftyhunnypie Posted January 7, 2012 Share Posted January 7, 2012 Our main workshop / garage outbuilding has a corrugated tin roof. Although there are no holes in it, it leaks in several places - especially when it's windy ( nearly always is). Hubby thinks they've not been overlapped enough, as he can see daylight through some of the joins. He thought of injecting silicone sealant in the gaps from inside & outside. Anyone got any better ideas? Cheers Emma.x Quote Link to comment Share on other sites More sharing options...
Lewis Posted January 7, 2012 Share Posted January 7, 2012 Think people have done similar with WIR rooves - will have to check mine actually, don't think they're leaking. I'd think it will work, nothing to lose from doing it. If not you could always lay another layer over the top with the middle of the panels over the old joins? Quote Link to comment Share on other sites More sharing options...
Redwing Posted January 7, 2012 Share Posted January 7, 2012 does it have supports across where the joins are? our hay store roof is like that but it has a beam under the join which stops movement and slight bowing which may let water in. when the beam fell down the roof started to leak, now its back in place there are no leaks Quote Link to comment Share on other sites More sharing options...
craftyhunnypie Posted January 7, 2012 Author Share Posted January 7, 2012 No there are no supports where the joins are. Emma.x Quote Link to comment Share on other sites More sharing options...
Cranberry Posted January 10, 2012 Share Posted January 10, 2012 Try painting the joint with "Ooops, word censored!"amin paint I've just had to do the same. Make sure the surface is dry before you start. Quote Link to comment Share on other sites More sharing options...
sjp Posted January 10, 2012 Share Posted January 10, 2012 which joints are leaking the ones down the length of the sheets or the one were two sheets overlap top to bottom? I've fitted lots of corrugated sheets over the years useing both new and salvaged sheets without any leaks never sealed any of the joints if a corrugated roof is leaking on the overlap were 2 more sheets are used down the roof then it's one of 2 thing that are wrong most common is not enough overlap it needs to be 100mm/4inch minamum if that is the case then the roof pitch is to wrong i.e to flat and the joint then needs to be sealed best way is to slacken of the fixings then pump a beed of silicone about an inch under then re fix so that the silicone is compressed best do from on top of the roof if the joints running down the length of the sheet are leaking more times than not the sheets were fitted from the wrong side the underlap/overlap is the wrong way round best way fix that other than refixing the roof is with flashband corrugated sheets need to be supported across the width of the sheets at most 3ft centres on corrugated tin and plastic 4ft on cement fibre sheets(asbestos type sheets) Quote Link to comment Share on other sites More sharing options...
