W
wayfoward
I had a job booked to retile 19m of kitchen floor where the house had apperently had a little bit of subsidence causing a a couple of crack lines to appear across the original tiling. Another tiler had already pulled up original tiling before customer called me, then bottled it on doing the job. I was happy to retile the floor if the customer was happy that it had stopped moving.
Then the week before the job the customer called to advise that the NHBC had reviewed their own original report and decided to do futher tests. Below is the info relayed by my customer:
"We have now had the report from the NHBC and they have advised “The Screed specialist advised that it appears that the wrong mix could have been used locally in the area and concluded that the screed could be repaired locally. He suggested that as there was no movement of the screed while being walked on and the cracks are hairline, the adhesive from the previous tiles could be scrabbled off and a 6mm Tough coat latex could be applied.”
However, because the recommendation was a local repair, the claim is under the minimum value, so they will not cover it.
I have spoken to a screed specialist and they were reluctant to take the floor up and re-screed it as there are risks of hitting pipes etc.
He recommended seeing if you have worked with a decoupling membrane (link below) and if you were happy with this, would probably be our best option if used with a flexible adhesive."
(edit - tilefixdirect link for dural durabase CI now just brings 404 error)
Edit by Dan: found dural's link: Dural Durabase CI++
I thought a typical bad mix was indicated by the screed coming up attached to the old tile and adhesive but this floor has stayed intact throughout. Anyway, customer has asked if its possible to just bridge the cracks with the durabase membrane or wether the whole floor should be covered. Any advice welcome please, I will be laying porcelain tiles brick shape on top.
PS - I only use flexible adhesive for all my floor tiling. Also heard there's flexible adhesive and then there's proper flexible adhesive, I'd like more info on that please. Currently I shop at Topps and never had a problem.
Then the week before the job the customer called to advise that the NHBC had reviewed their own original report and decided to do futher tests. Below is the info relayed by my customer:
"We have now had the report from the NHBC and they have advised “The Screed specialist advised that it appears that the wrong mix could have been used locally in the area and concluded that the screed could be repaired locally. He suggested that as there was no movement of the screed while being walked on and the cracks are hairline, the adhesive from the previous tiles could be scrabbled off and a 6mm Tough coat latex could be applied.”
However, because the recommendation was a local repair, the claim is under the minimum value, so they will not cover it.
I have spoken to a screed specialist and they were reluctant to take the floor up and re-screed it as there are risks of hitting pipes etc.
He recommended seeing if you have worked with a decoupling membrane (link below) and if you were happy with this, would probably be our best option if used with a flexible adhesive."
Edit by Dan: found dural's link: Dural Durabase CI++
I thought a typical bad mix was indicated by the screed coming up attached to the old tile and adhesive but this floor has stayed intact throughout. Anyway, customer has asked if its possible to just bridge the cracks with the durabase membrane or wether the whole floor should be covered. Any advice welcome please, I will be laying porcelain tiles brick shape on top.
PS - I only use flexible adhesive for all my floor tiling. Also heard there's flexible adhesive and then there's proper flexible adhesive, I'd like more info on that please. Currently I shop at Topps and never had a problem.
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