Discuss Cement based liquid screed in the Tiling Forum area at TilersForums.com

judge

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Evening all,does anyone know the % reading you need to tile onto cement liquid screed using a hair hygrometer ? Virtually all my floors in the near future are going to be cement based.this is probably aimed at Alan jackson(are you out there pal??)
 

3_fall

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75% RH
Just the same as regular s/c as I understand it, they can be rapid setting too.
Something worth checking when you find out who’s they are.
 
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judge

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75% RH
Just the same as regular s/c as I understand it, they can be rapid setting too.
Something worth checking when you find out who’s they are.
The company that's installing them round here (cemfloor) is telling customers 2 weeks and ready to tile !!!
I've just managed to get one down to 72%and that's four to five weeks old with two of them weeks being commisioned !!
 

Ajax123

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Needs to be 75%rh. Possibly 2 weeks in perfect conditions and at probably based on 50mm deep. You'll also probably get told no need to sand. That's rubbish. All screeds should be sanded especially cement based as they have a curing agent sprayed kn them . This is designed to hold the water in as the screed cures. It should be removed after 7 days in order to help drying. Check the CFA guide to contract flooring. Underfloor heating should also be commissioned. You'll also start to see gypsol rapide screeds now as well. Gypsol rapide is a fast drying anhydrite screed which also dries in 14 days based on 50mm. Does it need laitance removal but might still require light sanding to remove site debris. Rapide is also backed up by independent test data. I'm doing 4 rapide jobs this week.
 
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Whilst on the subject of liquid screeds I just found out that I've lost a 90 m2 job (80x80 porc)job due to me refusing to tile till the floor got commisioned.(says he couldn't wait till the utilities get connected??) I even talked to bal to see if I could use flex bone but they wouldn't guarantee it without the floor getting commisioned first.hes now got a part-time plumber in to tile it.
 

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Whilst on the subject of liquid screeds I just found out that I've lost a 90 m2 job (80x80 porc)job due to me refusing to tile till the floor got commisioned.(says he couldn't wait till the utilities get connected??) I even talked to bal to see if I could use flex bone but they wouldn't guarantee it without the floor getting commisioned first.hes now got a part-time plumber in to tile it.
Sounds about right!
 

Localtiler

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I see many failed jobs onto liquid screeds, cement and gypsum, its quite shocking as there usually a large area. People just don't know how to deal with them and the screed company makes this problem worse by not educating the customer
 
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I see many failed jobs onto liquid screeds, cement and gypsum, its quite shocking as there usually a large area. People just don't know how to deal with them and the screed company makes this problem worse by not educating the customer
Spot on localtiler.this particular job I have just lost out on was told by the guy that installed the ufh(probably the same guy that's now installing the tiles )and the liquid screed installer that the floor should be fine to tile without commissioning !!!!! Im just gonna find a wall to bang my head on
 

mma

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Whilst on the subject of liquid screeds I just found out that I've lost a 90 m2 job (80x80 porc)job due to me refusing to tile till the floor got commisioned.(says he couldn't wait till the utilities get connected??) I even talked to bal to see if I could use flex bone but they wouldn't guarantee it without the floor getting commisioned first.hes now got a part-time plumber in to tile it.
I've just walked away from one. 80x80 tiles floor down for two weeks at 80mm thickness, wanted it done before the kitchen is fitted. The guy didn't know anything about the screed and didn't know if it had been commissioned. I don't want hassle like that!
 

Ajax123

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I've just walked away from one. 80x80 tiles floor down for two weeks at 80mm thickness, wanted it done before the kitchen is fitted. The guy didn't know anything about the screed and didn't know if it had been commissioned. I don't want hassle like that!
The only system I know of that could accommodate that is norcros pro gyp base...
 

widler

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Even if the heating wasn't commissioned?
I tiled a 80m2 floor last feb/march ish , sand cement screed , heating commissioned , tiled it with porc 800x800, few weeks later i tiled the boiler house , it needed tiling before the boiler went in:( asked them how the hell did the ufh get turned on without the boiker, he just smiled and said“ it wasn’t turned on, i just told you so you would tile it”
Still solid over a year down the line :)
 

timeless john

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Perhaps time for tiling contractors to incorporate a specification sheet to be signed in advance of tiling - screed type, date laid, UFH commissioned ............. adhesive used, grout colour,
Screed companies could provide their part of this continuity cycle - or do they already?
 

Localtiler

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I've been assessing one this morning, 190 sqm onto liquid screed and something is a miss. Certainly not sanded correctly amongst other things
 

Ajax123

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Even if the heating wasn't commissioned?
I'm fairly sure yes but I will double check and report back
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Perhaps time for tiling contractors to incorporate a specification sheet to be signed in advance of tiling - screed type, date laid, UFH commissioned ............. adhesive used, grout colour,
Screed companies could provide their part of this continuity cycle - or do they already?
Some screeders do. You know how it is though. Theres screeders and theres screeders...
 
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  • :flashlight:
  • :floppy:
  • :flowercards:
  • :football:
  • :forkknife:
  • :fuelpump:
  • :gamedie:
  • :gemstone:
  • :ghost:
  • :gift:
  • :greenbook:
  • :guitar:
  • :gun:
  • :hammer:
  • :hearnoevil:
  • :heartssuit:
  • :hourglass:
  • :hourglasssand:
  • :inbox:
  • :incomingenvelope:
  • :iphone:
  • :isakayalantern:
  • :jackolantern:
  • :japanesedolls:
  • :japanesegoblin:
  • :japaneseogre:
  • :jokercard:
  • :key:
  • :kiss:
  • :knife:
  • :ledger:
  • :leftmagnify:
  • :lightbulb:
  • :link:
  • :lock:
  • :lockink:
  • :loudspeaker:
  • :loveletter:
  • :mailclosedflaglower:
  • :mailclosedflagup
  • :mailopenflaglower:
  • :mailopenflagup:
  • :megaphone:
  • :memo:
  • :microphone:
  • :microscope:
  • :minidisc:
  • :mobilecalling:
  • :moneybag:
  • :moneywings:
  • :moviecamera:
  • :moyai:
  • :musickeyboard:
  • :mute:
  • :newspaper:
  • :notebook:
  • :notebookdecorative:
  • :nutbolt:
  • :openbook:
  • :openfile:
  • :openlock:
  • :orangebook:
  • :outbox:
  • :package:
  • :pagefaceup:
  • :pagecurl:
  • :pager:
  • :paperclip:
  • :partypooper:
  • :pencil:
  • :performingarts:
  • :personalcomputer:
  • :pill:
  • :pinedecoration:
  • :pileofpoop:
  • :postalhorn:
  • :postbox:
  • :pushpin:
  • :radio:
  • :rightmagnify:
  • :roladex:
  • :rotatinglight:
  • :roundpushpin:
  • :rugby:
  • :satellite:
  • :sax:
  • :scissors:
  • :scroll:
  • :seat:
  • :seenoevil:
  • :shower:
  • :skis:
  • :skull:
  • :slotmachine:
  • :smoking:
  • :soccerball:
  • :spaceinvader:
  • :spades:
  • :speaknoevil:
  • :speaker:
  • :speakerone:
  • :speakerthree:
  • :speechballoon:
  • :straightruler:
  • :sweatdrops:
  • :syringe:
  • :telephonereceiver:
  • :telescope:
  • :television:
  • :tennisball:
  • :thoughtballoon:
  • :ticket:
  • :toilet:
  • :triangularruler:
  • :triangularflag:
  • :trophy:
  • :trumpet:
  • :vhs:
  • :videocamera:
  • :videogame:
  • :violin:
  • :windchime:
  • :wrench:
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