joe90 Posted January 23, 2019 Author Share Posted January 23, 2019 As an addition to this thread I am about to start tiling my conservatory floor and I am a bit paranoid about getting it right (this time), I am using 300mm square porcelain tiles. The concrete floor is well dry (3 months). I am thinking of using mapei rapid set, Screwfix do this https://www.screwfix.com/p/mapei-floor-wall-tile-adhesive-grey-20kg/4367d#product_additional_details_container or https://www.screwfix.com/p/mapei-rapid-set-adhesive-grey-20kg/29634 and I guess use this for the floor sealer https://www.screwfix.com/p/mapei-primer-g-5kg/5309p. Can the collective on here give any recommendations please. Link to comment Share on other sites More sharing options...
Jeremy Harris Posted January 23, 2019 Share Posted January 23, 2019 The advice from the tiler who laid our large format travertine was not to use rapid set, as it tends to go off too quickly. He wanted me to get the standard set stuff, which he seemed happy with (and which we've had no problems with). Link to comment Share on other sites More sharing options...
Declan52 Posted January 23, 2019 Share Posted January 23, 2019 It's more a case of how fast can you lay tiles. Rapid set you need to be on it as once it starts to set its game over, you can't mix it back up again. Link to comment Share on other sites More sharing options...
joe90 Posted January 23, 2019 Author Share Posted January 23, 2019 I have used rapid set before, I just use small batches. It’s the adhesive and sealer I am trying to get right. Link to comment Share on other sites More sharing options...
Onoff Posted January 23, 2019 Share Posted January 23, 2019 1 minute ago, joe90 said: I have used rapid set before Seems strange to see words in print that I'll never utter! 2 Link to comment Share on other sites More sharing options...
Mr Punter Posted January 23, 2019 Share Posted January 23, 2019 If the concrete is dust free you don't need a primer. Link to comment Share on other sites More sharing options...
joe90 Posted January 23, 2019 Author Share Posted January 23, 2019 26 minutes ago, Mr Punter said: If the concrete is dust free you don't need a primer. It is quite dusty, I keep sweeping it and more dust appears. Link to comment Share on other sites More sharing options...
Onoff Posted January 23, 2019 Share Posted January 23, 2019 Just now, joe90 said: It is quite dusty, I keep sweeping it and more dust appears. I had the dust problem so I gave the bathroom floor a coat of SBR diluted down. Lasted me well until I was ready to tile the floor. I chose SBR over PVA as I've read any water getting under tiles later on can lift PVA. I know you can get waterproof PVA but SBR is a darn sight cheaper. Cementone was the brand I used from S'fix I think it was. 1 Link to comment Share on other sites More sharing options...
PeterW Posted January 23, 2019 Share Posted January 23, 2019 For the £20, use the Mapei primer and do it right - you can dilute it 50/50 anyway. 1 Link to comment Share on other sites More sharing options...
joe90 Posted January 23, 2019 Author Share Posted January 23, 2019 (edited) 9 minutes ago, PeterW said: For the £20, use the Mapei primer and do it right - you can dilute it 50/50 anyway. Thats what I thought, my dad would have said “spoil a ship for a ha,peth of tar”. Which adhesive would you use? (one is on special offer ?) i did read read on a Tiler’s forum about problems using PVA as a sealer. Edited January 23, 2019 by joe90 Link to comment Share on other sites More sharing options...
Onoff Posted January 23, 2019 Share Posted January 23, 2019 41 minutes ago, joe90 said: Thats what I thought, my dad would have said “spoil a ship for a ha,peth of tar”. Which adhesive would you use? (one is on special offer ?) i did read read on a Tiler’s forum about problems using PVA as a sealer. Think it's @nod that favours SBR as a primer? As an aside, with my Aqua Seal tanking kit, it says if you run out of the Aqua Seal primer then use SBR. Link to comment Share on other sites More sharing options...
nod Posted January 23, 2019 Share Posted January 23, 2019 12 minutes ago, Onoff said: Think it's @nod that favours SBR as a primer? As an aside, with my Aqua Seal tanking kit, it says if you run out of the Aqua Seal primer then use SBR. SBR is as good as a anything and much cheaper If we used the recommended primers We would have no room for our tools Most are pretty good But you can’t go wrong with SBR We normally mix it at 3-1 But you must let it dry completely before use Link to comment Share on other sites More sharing options...
Oz07 Posted January 23, 2019 Share Posted January 23, 2019 What's best to seal my new garagefloor with? Apparently pva reactivates when gets wet Link to comment Share on other sites More sharing options...
joe90 Posted January 23, 2019 Author Share Posted January 23, 2019 2 minutes ago, Oz07 said: What's best to seal my new garagefloor with? Apparently pva reactivates when gets wet I used floor paint and it looks good too. Link to comment Share on other sites More sharing options...
Onoff Posted January 23, 2019 Share Posted January 23, 2019 (edited) 3 minutes ago, Oz07 said: What's best to seal my new garagefloor with? Apparently pva reactivates when gets wet You can get waterproof PVA as I said above. Why not floor paint? My double garage had never been worked in just used as a store so when we bought the place I Hoovered the concrete floor and tipped all the collected half tins of grey scrounged from sites etc into an old 5 gal fermenting him. Applied with an old broom head. I'll never match the grey again but it looks good. Edited January 23, 2019 by Onoff Link to comment Share on other sites More sharing options...
Oz07 Posted January 23, 2019 Share Posted January 23, 2019 I want cheap and cheerful Link to comment Share on other sites More sharing options...
Nickfromwales Posted January 24, 2019 Share Posted January 24, 2019 6 hours ago, Oz07 said: I want cheap and cheerful Then leave the concrete as is Link to comment Share on other sites More sharing options...
Nickfromwales Posted January 24, 2019 Share Posted January 24, 2019 @joe90 On a dry dusty floor I always mop the whole floor first with 25/75 flexi primer/water until saturated. That'll dry more or less in front of you, and then you're good to lay. After mixing up ( standard set if its a big area and I'm on my own ) I have a bucket of 50/50 and a sponge and dampen the area I am about to lay. Haven't lost a patient yet, and have never used SBR. A lot of people, mostly plasterers, swear by SBR, ( I think they use it in their tea / coffee instead of milk TBH ) but if there is a product for one job and a product for another, then buy the one that says so on the tin AFAIC . I've used Mapei by the bucket load so no issues there, and many others such as Bal ( expensive ), Ultra ( my first choice as I've used mountains of it with fantastic results ), Kera, Granfix, and other 'knowns', but the only one I would actively steer clear from is Unibond. Had some proper shite results with that and whatever you do, don't EVER buy their ready made floor adhesive in a tub!!!! Utter dog? As always, butter the back of the tile so its completely covered, and lay your notched bed on the floor, ( if the floor is good enough for one notch ), or butter, bed the floor, and then bed the tile too ( if its a poor floor that's needing making good but SLC is overkill ). Contaminants like plaster or plasterboard dust are not your friend, so mop the life out of the floor with loads of good old H2O wherever there is evidence of that. TBH a dry floor is your biggest concern so refer to my first and you should be fine. 1 Link to comment Share on other sites More sharing options...
joe90 Posted January 24, 2019 Author Share Posted January 24, 2019 Thanks @Nickfromwales , which of the two mapei adhesives above would you use (the cheaper one is on special offer). p.s. I noticed you answered this about 4am, do you suffer from lack of sleep? Link to comment Share on other sites More sharing options...
Nickfromwales Posted January 24, 2019 Share Posted January 24, 2019 1 hour ago, joe90 said: Thanks @Nickfromwales , which of the two mapei adhesives above would you use (the cheaper one is on special offer). p.s. I noticed you answered this about 4am, do you suffer from lack of sleep? Yup. OCD / ADHD whatever. Brain decides to start going through lists and the frame has to get up with it. My oldest is the same. I wonder where he gets it from ?? One of those is regular, and the other ( more expensive ) is flexible. If it’s UFH or porcelain tiles then it’s flexible every time. Regular only if it’s a dumb slab and ceramic tiles. 1 Link to comment Share on other sites More sharing options...
nod Posted January 24, 2019 Share Posted January 24, 2019 21 hours ago, Oz07 said: What's best to seal my new garagefloor with? Apparently pva reactivates when gets wet PVA has had its day Every few years we have problems with soundblock boards Sucking in like blotting paper SBR is the only sealer that can cope Weather it’s tiles or render Its all about killing the suction on the surface To stop your adhesive or plaster drying to quickly A couple of caps full in each tile adhesive mix will also help Link to comment Share on other sites More sharing options...
nod Posted January 24, 2019 Share Posted January 24, 2019 (edited) 9 hours ago, joe90 said: Thanks @Nickfromwales , which of the two mapei adhesives above would you use (the cheaper one is on special offer). p.s. I noticed you answered this about 4am, do you suffer from lack of sleep? I use tons of adhesive each year Always flexible Same with the groute Edited January 24, 2019 by nod 1 Link to comment Share on other sites More sharing options...
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