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Is this true? - hairline crack in one of the newly placed floor tiles

Discuss Is this true? - hairline crack in one of the newly placed floor tiles in the America Tile Forum area at TilersForums.com.

We recently had an en suite fitted by a local company that appears to be generally reputable. We've had a few issues with the work, one of which was that we noticed a hairline crack in one of the newly placed floor tiles.

The company sent someone out to replace the tile and although I didn't watch what they were doing, I can say it was loud and some kind of saw was being used, causing vibration throughout the house.

A month or so later and that same tile had begun to rock on one corner. We called them and they sent a different guy out who having gone through the same removal process advised that the previous fix had failed to use primer on the plywood substrate and as such the tile had become loose. I took a photo post removal and in addition to the tile, a square hole had been cut in the plywood layer between the tile and existing floorboards.

Roll on another few weeks and the entire floor is becoming unstable with tiles rocking all over and cracks in the grout.

The company sent someone back last week and their response is that there must be movement in our house and therefore they cannot use floor tiles and we would instead need to use some form of click-laminate. This won't match the walls (as we specifically chose the same tile) and both the materials and labour would I believe be considerably cheaper with this option.

My initial reaction and that of those I've consulted who are much more savvy on this kind of thing is that they are taking the pi$$. All houses have some level of movement and this is why a layer is used between the existing floorboards and the tile. From what I can see, they used fairly thin plywood (rather than backboard) which when combined with removing two tiles and cutting through the plywood (removing the integrity of this layer) has resulted in the issue with the other tiles, rather than there being an issue with house movement.

What do the experts think?

We have tiles in the family bathroom that have been down for years and never had a problem, though they were installed using concrete backed backboard as far as I recall. They tried to blame some building work that happened 4 years before their work, but that did not affect the structure of the house in this area and even if it had, my understanding is that the point of the ply is to reduce impact of any house movement, and the double tile removal, including the hole in the ply is more likely to be the cause of the issue.

Any thoughts or advice gratefully received.
 
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Dave

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We recently had an en suite fitted by a local company that appears to be generally reputable. We've had a few issues with the work, one of which was that we noticed a hairline crack in one of the newly placed floor tiles.

The company sent someone out to replace the tile and although I didn't watch what they were doing, I can say it was loud and some kind of saw was being used, causing vibration throughout the house.

A month or so later and that same tile had begun to rock on one corner. We called them and they sent a different guy out who having gone through the same removal process advised that the previous fix had failed to use primer on the plywood substrate and as such the tile had become loose. I took a photo post removal and in addition to the tile, a square hole had been cut in the plywood layer between the tile and existing floorboards.

Roll on another few weeks and the entire floor is becoming unstable with tiles rocking all over and cracks in the grout.

The company sent someone back last week and their response is that there must be movement in our house and therefore they cannot use floor tiles and we would instead need to use some form of click-laminate. This won't match the walls (as we specifically chose the same tile) and both the materials and labour would I believe be considerably cheaper with this option.

My initial reaction and that of those I've consulted who are much more savvy on this kind of thing is that they are taking the pi$$. All houses have some level of movement and this is why a layer is used between the existing floorboards and the tile. From what I can see, they used fairly thin plywood (rather than backboard) which when combined with removing two tiles and cutting through the plywood (removing the integrity of this layer) has resulted in the issue with the other tiles, rather than there being an issue with house movement.

What do the experts think?

We have tiles in the family bathroom that have been down for years and never had a problem, though they were installed using concrete backed backboard as far as I recall. They tried to blame some building work that happened 4 years before their work, but that did not affect the structure of the house in this area and even if it had, my understanding is that the point of the ply is to reduce impact of any house movement, and the double tile removal, including the hole in the ply is more likely to be the cause of the issue.

Any thoughts or advice gratefully received.
They are talking utter bollox I’m afraid. They have incorrectly prepared the floor for tiling. Thin plywood is 100% unsuitable for tiling too.
 

Dave

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Thanks. Are there any specific standards I can refer to if I need to make a case for small claims? If not, I guess I could get an expert opinion from another tiler?
Bs5385 , not sure on the exact section but if you phone the tile association tech line they will advise
 

Dave

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Thanks again. One last question. I stated that the plywood used is too thin, which is clearly subjective. What would be a reasonable thickness, or is plywood just not suitable for a bathroom floor?
Standards say that 15mm is minimum but to he honest since tiling to plywood on walls was abolished under changes to bs5385 , then not many tilers tile to plywood at all and definitely not as thin as yours is. Yours is simply incorrect prep work and not house movement
 

Kevbos

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Please contribute to this thread if you have any new information or can even just reiterate what has been said already. :)
We recently had an en suite fitted by a local company that appears to be generally reputable. We've had a few issues with the work, one of which was that we noticed a hairline crack in one of the newly placed floor tiles.

The company sent someone out to replace the tile and although I didn't watch what they were doing, I can say it was loud and some kind of saw was being used, causing vibration throughout the house.

A month or so later and that same tile had begun to rock on one corner. We called them and they sent a different guy out who having gone through the same removal process advised that the previous fix had failed to use primer on the plywood substrate and as such the tile had become loose. I took a photo post removal and in addition to the tile, a square hole had been cut in the plywood layer between the tile and existing floorboards.

Roll on another few weeks and the entire floor is becoming unstable with tiles rocking all over and cracks in the grout.

The company sent someone back last week and their response is that there must be movement in our house and therefore they cannot use floor tiles and we would instead need to use some form of click-laminate. This won't match the walls (as we specifically chose the same tile) and both the materials and labour would I believe be considerably cheaper with this option.

My initial reaction and that of those I've consulted who are much more savvy on this kind of thing is that they are taking the pi$$. All houses have some level of movement and this is why a layer is used between the existing floorboards and the tile. From what I can see, they used fairly thin plywood (rather than backboard) which when combined with removing two tiles and cutting through the plywood (removing the integrity of this layer) has resulted in the issue with the other tiles, rather than there being an issue with house movement.

What do the experts think?

We have tiles in the family bathroom that have been down for years and never had a problem, though they were installed using concrete backed backboard as far as I recall. They tried to blame some building work that happened 4 years before their work, but that did not affect the structure of the house in this area and even if it had, my understanding is that the point of the ply is to reduce impact of any house movement, and the double tile removal, including the hole in the ply is more likely to be the cause of the issue.

Any thoughts or advice gratefully received.
I think backerboard is not always best but many tilers will disagree! But if you going over floorboards !they need to not bounce firstly !! Then overboard with 22mm marine ply !prime with sbr !then use decoupling membrane then tile
 

Kevbos

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:)
They have now been back and agreed that the flooring needs to be replaced. Tiles are on order and they will book a slot to carry out the repair work.
Thanks for all the replies as I think it began to make a difference when I was able to more clearly (and firmly!) articulate the issue from a more informed perspective - a great forum!
It's good they offering to rectify work !!
 
:)

Plywood on joists , then ditra
Different opinions here!
We're having a loft conversion and I'll be tiling the bathroom. Builders said to use back board, so after doing some research on here I'm thinking following:
1) SBR plywood
2) Lay 6mm hardieboard using (flexi) tile adhesive
3) Screw down using 25mm screws
3) Tape joints.
4) Lay tiles using same (flexi) tile adhesive

Is this ok? Or should I go with ditra instead of hardiebacker? or does it matter either way!!

(bathroom is only 4sqm)
 

Dan

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You could glue and screw 6mm hardie or ditra stuck with Ardex AF200. If it’s solid I’d go for ditra, if not I’d use hardie.
Welcome to the forum @parkerfresh don't think I've seen you about before. :)

Thanks for replying. If you see any other threads you can chip in on, even old ones, then please do so. It helps people who find the thread even a year later etc. :)
 

Dave

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Yeah, I’m a new poster and probably should have introduced myself… I used to lurk about on here a few years ago but gave up as I could only access the diy section.
Once you get a few advice posts under your belt , I’ll upgrade your account. 👍
 

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