lafarge low laitance screed,tiling with 600x600 polished porcelain

[deankyall]

yep thats what i told him about expansion,by the way what did you use to rough up the surface,?what about a floor sander?

The advice given above is spot on. I tiled a few of these screeds over the last year or two, they are not to be taken on lightly. The prep has to be carried out correctly. The gypsum adhesive I used was really good and the advice we are quoting was from the man in the know and not from some1 wanting to sell there product. If you can get your hands on some gypsum adhesive then get it and I would still give the screed a but of a scrape up. The expansion joints are essential.

 

[Rich]

I used a sanding pole. If the screed is still slightly soft, you can just use a stiff brush.

 

[Ian]

is there a way i could contact him,then i could maybe get the customer info from the horses mouth

I'll PM you his work mobile. This type of screed is his profession and, IMO, if you stray away from his advice then prepare for failure. I don't mean to sound harsh, rude or come across as a 'know it all' but, I am speaking from experience.

 

[jay]

Has the floor heating been commisioned

 

[Gazzer]

I used a 7" variable speed angle grinder with 60 grit disc.....messy job though but when you see what comes off the floor you will understand

 

[deankyall]

yes been on low heat for about a week,so a while to go yet

Has the floor heating been commisioned

 

[deankyall]

i think ill go for gypfix,or i will tell customer to go with it,at least no priming then,ill contact nicobond monday,wonder if theyll do a deal for large amount,anyone know of m2 for a bag based on say 10mm trowel ? plus buttering back

 

[deankyall]

unbelievably,i just got back from another job,called in last night as an emergency,aga being fitted tuesday,got there and it was liquid screed,so had to tell them the process,they called builder who knew nothing about it at all,he called easyscreed ,who said it just needs 2 coats acrylic primer then its ready for tiling,there is another 60m2 of travertine to do,i scraped of the bit where i had to tile this morning then primed,showed her what it involves,so more gypfix needed!!!

 

[Ajax123]

You can contact me at work dean. My mobile number is 07545 932723

To all the other forum members i am happy for this mobile number to be in the public forms. I wold rather recieve calls for advice before the ob is done than receive calls about problems afterwards....

I dont usually answer agter working ours but you can leave a message

 

[deankyall]

many thanks,i will call tomorrow,def want to cover all bases here and make sure the customer recieves correct info,i also popped into the local biggest tile wholesalers this afternoon and not one salesperson or employee knows anything about tiling onto this,and they are selling stuff to the public and trade,apparantly they have a kerakoll trade evening upcoming so i will be asking questions there,as i have read the post about problems with their adhesive,although i have used their tenoflex on walls and found it resonably priced and good to use.

You can contact me at work dean. My mobile number is 07545 932723

To all the other forum members i am happy for this mobile number to be in the public forms. I wold rather recieve calls for advice before the ob is done than receive calls about problems afterwards....

I dont usually answer agter working ours but you can leave a message

 

[deankyall]

guys is this any good for measuring the moisture content from the screed?

or this

 

[Ajax123]

Bottom one is but not top one

 

[deankyall]

update,customer has decided after i opened a nicobond acc,to go with kerrakoll h40 ideal,have spokn with rep ,who has agreed to do a carbide bomb test,told me i need no primer,and thats it meeting with him next week,anybody used this with fugabella grout and matching Silicon?

 

[Gazzer]

I had a meeting with a Kerakoll rep and he said priming was needed.

 

[deankyall]

who do you believe??,aparently if you prime it puts moisture back into the screed which is then trapped there ,most failures are because there is moisture in the screed he told me,after sanding,the adhesive bonds with the screed,it says on bag no priming needed!! have you used it ,if so which method did you use?the rep is coming to site and only when he gives go ahead will i start,customer( a builder) is doing the prep.this is a worry ,if it goes wrong i wonder where we would stand given his input?