cwr Posted January 10, 2021 Share Posted January 10, 2021 I wonder if this is an unusual arrangement, given the apparent low availability of suitable gullies. Or am I missing an obvious solution...? So, what I want to do is use a former (1200 x 900, center drain), with a gully that has a vertical outlet that goes straight into ta 110mm waste pipe that comes up through the slab floor. And I want a gully that the inners of which can be lifted out should access ever be needed to the waste pipe. I've found a McAlpine gully that meets this spec but it is for membrane tanking. Could maybe make my own former from 4 bits of tile backer board and seal with tape and to the gully? Link to comment Share on other sites More sharing options...
PeterW Posted January 10, 2021 Share Posted January 10, 2021 Assuming you want to tile, the McAlpine one comes in a tile version here https://mcalpineplumbing.com/wet-room-products/tiles-gratings-accessories-and-conversion-kits/fgt150-sv-110-150mm-square-stainless-steel-tile-internal-non-return-valve-push-fit-outlet need to get the tanking perfect though Link to comment Share on other sites More sharing options...
andy Posted January 11, 2021 Share Posted January 11, 2021 10 hours ago, cwr said: I wonder if this is an unusual arrangement, given the apparent low availability of suitable gullies. Or am I missing an obvious solution...? So, what I want to do is use a former (1200 x 900, center drain), with a gully that has a vertical outlet that goes straight into ta 110mm waste pipe that comes up through the slab floor. And I want a gully that the inners of which can be lifted out should access ever be needed to the waste pipe. I've found a McAlpine gully that meets this spec but it is for membrane tanking. Could maybe make my own former from 4 bits of tile backer board and seal with tape and to the gully? I am in a similar position, need two shower trays going which drain straight into soil pipe. I am intending to use these - or one of the Wedi trays and then push 30cm or so of waste pipe down verically through a McAlpine DC2: https://www.wedi.de/uk/products/building-systems/floor-level-showers/fundo-integro Link to comment Share on other sites More sharing options...
Russell griffiths Posted January 11, 2021 Share Posted January 11, 2021 Mcalpine do a number of these wet room traps, I’m just fitting a couple in this house and have used them in another place. However they are mostly for screened floors and not a former, you will need to buy one and see if you can fit it to your former. Link to comment Share on other sites More sharing options...
MikeGrahamT21 Posted January 11, 2021 Share Posted January 11, 2021 I found this whilst doing some research on wet rooms... https://bathcenter.co.uk/marmox-360-drain-inc-stainless-steel-grid-147643-p.asp It does say it only fits marmox 360 trays though? Link to comment Share on other sites More sharing options...
ProDave Posted January 11, 2021 Share Posted January 11, 2021 11 hours ago, PeterW said: Assuming you want to tile, the McAlpine one comes in a tile version here https://mcalpineplumbing.com/wet-room-products/tiles-gratings-accessories-and-conversion-kits/fgt150-sv-110-150mm-square-stainless-steel-tile-internal-non-return-valve-push-fit-outlet need to get the tanking perfect though I would be interested to see that. It mentions "valve" not "trap" so is it a version of a fanny trap? I wonder how it would stand up to a drain pressure test? Link to comment Share on other sites More sharing options...
JOE187 Posted January 11, 2021 Share Posted January 11, 2021 The Mcalpine traps work well with utility room floor similar principle to hep valve. https://www.plumbers-mate-sales.co.uk/mcalpine-gully-tile-silicone-non-return-valve---39000054-4504-p.asp 1 Link to comment Share on other sites More sharing options...
cwr Posted January 19, 2021 Author Share Posted January 19, 2021 Some interesting options there. I've also found this from Harmer. Is for membrane though I might well go that route. Only concern is it's a 50mm water seal, our building regs say min 75mm... Link to comment Share on other sites More sharing options...
cwr Posted January 19, 2021 Author Share Posted January 19, 2021 As for trays, did I see somewhere on this forum someone that made their own by laying mortar sloped in towards the drain, or did I just imagine that...? Link to comment Share on other sites More sharing options...
Russell griffiths Posted January 19, 2021 Share Posted January 19, 2021 6 hours ago, cwr said: As for trays, did I see somewhere on this forum someone that made their own by laying mortar sloped in towards the drain, or did I just imagine that...? This is a standard detail, I will have a couple of these my last house had 3 it’s fairly normal you screed the floor with a fall to the drain, then tanking membrane then tiles, no tray needed. @Onoff has about 16,000 pictures of his. Link to comment Share on other sites More sharing options...
cwr Posted January 20, 2021 Author Share Posted January 20, 2021 Thanks Russell, I'll try and find the posts. Decided to go for the McAlpine one after all, as it's 75mm seal and that's what the regs say to use. Link to comment Share on other sites More sharing options...
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