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MAB

CT1 and/or Sikaflex for a shower tray installation?

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Biggest gotcha is cross-threading the waste when you turn it in to tighten it. Makes you think it's tightened up snug underneath but it hasn't. Set it up dry and count the number of turns it takes to get it snug, then count them again when you seal and give the final tighten up. 

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7 hours ago, Nickfromwales said:

Biggest gotcha is cross-threading the waste when you turn it in to tighten it. Makes you think it's tightened up snug underneath but it hasn't. Set it up dry and count the number of turns it takes to get it snug, then count them again when you seal and give the final tighten up. 

 

Don't you also advocate not allowing the wastes to spin as you do them up so you compress rather than "smear" the sealant?

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1 minute ago, Onoff said:

 

Don't you also advocate not allowing the wastes to spin as you do them up so you compress rather than "smear" the sealant?

Yes. The part that goes underneath shouldn't be spun, only the top part. That way you don't get the rubber washer displacing and the trap going off centre.   

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I guess its @Nickfromwales query but happy to receive any advice from numerous experts on here...

 

So its time to buy the necessary bits (skimmer is calling around tomorrow - I'm hoping he will be able to do the bathrooms / unsuits fairly soon - its then time for the trays to go down) ready for the shower trays

 

Sikaflex - is THIS the one to seal between the stray and the cement boards? https://www.screwfix.com/p/sika-sikaflex-ebt-all-weather-sealant-clear-300ml/7286d

 

Primer - https://www.toppstiles.co.uk/tprod3071/bal-primer-1ltr.html?utm_source=google-shopping&gclid=EAIaIQobChMItIy35YOk2gIVRrvtCh2MsAowEAQYAiABEgIQjPD_BwE&gclsrc=aw.ds#fo_c=2258&fo_k=80de937287d34cdea089275da61fe442&fo_s=gplauk  acceptable to use on the timber floor prior to the flexible tile adhesive?

 

And finally - the adhesive...  https://www.toppstiles.co.uk/tprod44754/bal-max-flex-5kg-white.html

 

Don't want to skimp on quality items - I don't want to have to redo this job!

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27 minutes ago, CC45 said:

I guess its @Nickfromwales query but happy to receive any advice from numerous experts on here...

 

So its time to buy the necessary bits (skimmer is calling around tomorrow - I'm hoping he will be able to do the bathrooms / unsuits fairly soon - its then time for the trays to go down) ready for the shower trays

 

Sikaflex - is THIS the one to seal between the stray and the cement boards? https://www.screwfix.com/p/sika-sikaflex-ebt-all-weather-sealant-clear-300ml/7286d

 

Primer - https://www.toppstiles.co.uk/tprod3071/bal-primer-1ltr.html?utm_source=google-shopping&gclid=EAIaIQobChMItIy35YOk2gIVRrvtCh2MsAowEAQYAiABEgIQjPD_BwE&gclsrc=aw.ds#fo_c=2258&fo_k=80de937287d34cdea089275da61fe442&fo_s=gplauk  acceptable to use on the timber floor prior to the flexible tile adhesive?

 

Don't want to skimp on quality items - I don't want to have to redo this job!

All the above are spot on. 

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I didnt think the prices were ott!  Not keen on toppstiles as an outlet but they are convenient tbh.

 

Cheers @Nickfromwales

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8 hours ago, CC45 said:

I didnt think the prices were ott!

At £20 for 5 kilos that bal works out £80 a bag :o. Way OT ( F ) T. 

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So where should I be looking then Nick?  What would a reasonable price be?  I will need a lot when the serious tiling begins....

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Bought some Bal from Topps Tiles for £20 (20kg bag) in the end - needs must.  Before the floor tiles go down I will find a cheaper supplier.

 

If I butter the underside of the tray - I assume I need to fill the whole tray - even the 'trough' near the edge?  That's going to be a heavy lift!

 

 

 

IMG_2754.JPG

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10 hours ago, CC45 said:

Bought some Bal from Topps Tiles for £20 (20kg bag) in the end - needs must.  Before the floor tiles go down I will find a cheaper supplier.

 

If I butter the underside of the tray - I assume I need to fill the whole tray - even the 'trough' near the edge?  That's going to be a heavy lift!

 

 

 

IMG_2754.JPG

The area that's been ground flat is where you need to apply the adhesive. Don't fill the rest of the area, and don't put any where the trap will sit.

In the dip either side of where the trap goes put a generous blob and let it squeeze out as you push the tray into place. 

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and none around the edges?  Surprised you've got time to reply @Nickfromwales!  It must be beer O'clock on Buildhub SOS now?

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37 minutes ago, CC45 said:

and none around the edges?  Surprised you've got time to reply @Nickfromwales!  It must be beer O'clock on Buildhub SOS now?

None on the edges, the stone resin is tougher than you are heavy ;). Back filling the gap along the front leading edge with tile adhesive is what I do, but I doubt I'd it makes a blind bit of difference TBH 

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Tray went in yesterday - feels very solid.  Thanks to @Nickfromwales for advice.

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