Floors dropping after a while - Tile Advice

[Flintstone]

has anyone had a call back about silicone coming away around shower or wall to floor joint?
I've been to re silicone today a job i finished in December and the floor has dropped about 5mm, he's had a bit of an extension and some building works, I've seen this problem a few times, anyone else had it ? No real easy fix apart from re seal with a thicker bead

 

[Chalker]

Have had it before, amazingly where the floor joist on a new build meet the wall. Especially when they are the lightweight joists with the metal braces.

 

[Dumbo]

Had it before on new build I think it's where the joists shrink as they dry out .
I've got lightweight joists in my house had no issue with those .

 

[Blunt Tool]

I always tile walls first then floor so never had that problem.

 

[Flintstone]

But, the silicone is still going to come
Away, and the potential for a gap around the tray is the same

 

[Blunt Tool]

Yes can around tray agree, but always test tray to make sure solid and no movement, best you can do.

 

[hmtiling]

seen it loads of times on new builds or extensions.Joists shrinking

 

[Bathfix Bob]

As a finishing trade we suffer when builders leave houses open to elements too long when nocking them up.

There are a row of 3 or 4 new houses round here built by a smallish building co you come and go around other jobs and they've been open to the elements for at least a year before they got round to putting the roof tiles on, all the moisture will take ages to dry out.

 

[hmtiling]

Also, where do you think the timber is kept by builders merchants?

 

[peteablard]

I've had that recently, just re siliconed and that seems to have sorted ut

 

[J Sid]

seen it a couple of times,reseal

 

[Flintstone]

Had to take it up a level on the fugi today, 10mm!

 

[On one]

I've had a couple of times where the shower tray(on legs) has moved/dropped and I've gone back and resealed.
I never quibbled, just resealed it and moved on

 

[Flintstone]

Undo that dislike at once ! @wrighty

 

[One Day]

Yes, often. On a possible "dropper" I try to remember to tile walls first then the floor. Avoids any major gap.
My worst recent one dropped 10mm. I used keba and all schluter loveliness so no risk of breaks in the waterproofing...