Repairing grout

Broncho · 04-27-2018, 03:20 PM

One of my bathrooms, 18 months old, needs a little bit of work, the bathroom has never been used but some of the grout where the walls meet the floor has cracked (settling

) rather than having it re grouted is there a product that can fill the cracks? They're only like a millimetre.

It's white grout if that makes a difference and I'm pretty handy so don't mind doing it myself.

nordberg · 04-27-2018, 03:24 PM

More grout!

Kal101 · 04-27-2018, 03:35 PM

As above.

More grout to fill the grout. Usually if it’s cracking can be indicative that the original grout was watered down too much.

Watsey · 04-27-2018, 03:36 PM

Silicone (mastic) is better for joints where there's a likelihood of differential movement.

Broncho · 04-27-2018, 03:47 PM

Quote:

Originally Posted by Kal027

As above.

More grout to fill the grout. Usually if it’s cracking can be indicative that the original grout was watered down too much.

I'd normally agree but it's more of a case of 2 tonnes of tiles on a suspended floor, it was bound to happen and it's actually not as bad as I thought being honest.

Kal101 · 04-27-2018, 03:51 PM

Quote:

Originally Posted by Broncho

I'd normally agree but it's more of a case of 2 tonnes of tiles on a suspended floor, it was bound to happen and it's actually not as bad as I thought being honest.

Fair enough.

Let’s hope they don’t end up downstairs!!

Broncho · 04-27-2018, 03:54 PM

Quote:

Originally Posted by Kal027

Fair enough.

Let’s hope they don’t end up downstairs!!

Yeah that was always a worry

To be honest it's been like that since the first few weeks, it's just that I went in there for the first time in months and thought I'll have to sort that.

nordberg · 04-28-2018, 01:20 AM

Quote:

Originally Posted by Broncho

Yeah that was always a worry

To be honest it's been like that since the first few weeks, it's just that I went in there for the first time in months and thought I'll have to sort that.

Sounds like shrinkage more than anything to do with movement.

Edinburra · 04-28-2018, 03:08 AM

This is what I like about this forum, questions like this and the genuinely helpful replies. Please keep it up.

Malone · 04-28-2018, 03:30 AM

Quote:

Originally Posted by Watsey

Silicone (mastic) is better for joints where there's a likelihood of differential movement.

This.
Especially on a wall-floor joint and in a bathroom

Daftasabrush · 04-28-2018, 12:44 PM

Quote:

Originally Posted by Malone

This.
Especially on a wall-floor joint and in a bathroom

Thirded, would never use grout to join tiles to a floor

a803sgo · 04-28-2018, 06:05 PM

Sealant, don't grout.

Whoever did it using grout did it wrong.

Broncho · 04-29-2018, 06:13 PM

Are people really saying that you should use mastic to seal the floor of a new bathroom?

It’d look shite!

Daftasabrush · 04-29-2018, 07:41 PM

Quote:

Originally Posted by Broncho

Are people really saying that you should use mastic to seal the floor of a new bathroom?

It’d look shite!

Pics?

You do know you can get colour co-ordinated sealant?

aquazi · 04-30-2018, 03:13 AM

Or clear sealant! Done right, and neat (which easier said than done) looks as good.

creepy coupe · 04-30-2018, 03:47 AM

Sounds like they didn't use

https://www.screwfix.com/p/mapei-bui...te-2-5kg/70239

Broncho · 04-30-2018, 04:20 AM

Quote:

Originally Posted by creepy coupe

Sounds like they didn't use

https://www.screwfix.com/p/mapei-bui...te-2-5kg/70239

He did because I picked it up for him!

Strange!

creepy coupe · 04-30-2018, 04:22 AM

Quote:

Originally Posted by Broncho

He did because I picked it up for him!

Strange!

Is it possible you have water ingress somewhere?

Watsey · 04-30-2018, 04:48 AM

Quote:

Originally Posted by Broncho

Are people really saying that you should use mastic to seal the floor of a new bathroom?

It’d look shite!

No. You asked for advice regarding cracking where the wall meets the floor, not the whole floor.

As has been clearly said, silicone/mastic is the correct material to use at this junction. A mastic bead.

Adhesive is used to stick the tiles to the wall or floor. Grout is used to finish the joints between the tiles. Mastic provides a flexible waterproof seal between two surfaces that may have some differential movement.

1 AKY · 04-30-2018, 06:23 AM

As in....

chris-c · 04-30-2018, 06:25 AM

/\ what he said. Its always a silicon sealant at the join to allow flexibility. I was going to say I've often seen it in a dark grey that looks very neat.

Mr Burt · 04-30-2018, 08:12 AM

Grout related question, while all the experts are gathered in one place.
Best way of removing stained grout prior to regrouting?

04-27-2018, 03:20 PM	#1
Broncho Banned 2311 Rep 5,101 Posts Drives: Chav white Mercedes Join Date: Nov 2015 Location: Rainhill iTrader: (0)	Repairing grout One of my bathrooms, 18 months old, needs a little bit of work, the bathroom has never been used but some of the grout where the walls meet the floor has cracked (settling ) rather than having it re grouted is there a product that can fill the cracks? They're only like a millimetre. It's white grout if that makes a difference and I'm pretty handy so don't mind doing it myself.
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04-27-2018, 03:24 PM	#2
nordberg Major 178 Rep 1,470 Posts Drives: F31 330d M Sport Join Date: Nov 2013 Location: Somewhere iTrader: (1)	More grout!
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04-27-2018, 03:35 PM	#3
Kal101 Major General 3105 Rep 7,032 Posts Drives: 335xd Msport + Join Date: Jan 2014 Location: West mids!!!! iTrader: (0) Garage List 2015 Bmw msport + 3 ... [0.00]	As above. More grout to fill the grout. Usually if it’s cracking can be indicative that the original grout was watered down too much. __________________
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04-27-2018, 03:36 PM	#4
Watsey Major General 6431 Rep 8,503 Posts Drives: F31 330D sDrive M Sport Join Date: Jun 2015 Location: On sabbatical. iTrader: (1)	Silicone (mastic) is better for joints where there's a likelihood of differential movement. __________________ Current : F31 330sD, remapped, Ohlins Road & Track, Millway camber plates, Quaife LSD, Stoptech brakes + Pagid RSL1 pads all round, Weichers front strut brace, Eibach front & rear anti-roll bars, Michelin MP4S.
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04-28-2018, 03:08 AM	#9
Edinburra Major 547 Rep 1,484 Posts Drives: Audi A5 Join Date: Apr 2014 Location: Edinburgh, Scotland. iTrader: (0)	This is what I like about this forum, questions like this and the genuinely helpful replies. Please keep it up.
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04-28-2018, 06:05 PM	#12
a803sgo Captain 170 Rep 616 Posts Drives: BMW 320D M-SPORT (F30) Join Date: Apr 2015 Location: Kent, UK iTrader: (0)	Sealant, don't grout. Whoever did it using grout did it wrong.
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04-29-2018, 06:13 PM	#13
Broncho Banned 2311 Rep 5,101 Posts Drives: Chav white Mercedes Join Date: Nov 2015 Location: Rainhill iTrader: (0)	Are people really saying that you should use mastic to seal the floor of a new bathroom? It’d look shite!
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04-30-2018, 03:13 AM	#15
aquazi Major 461 Rep 1,303 Posts Drives: 18 M4C Join Date: Nov 2017 Location: Sutton coldfield iTrader: (0)	Or clear sealant! Done right, and neat (which easier said than done) looks as good.
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04-30-2018, 03:47 AM	#16
creepy coupe Lieutenant General 1868 Rep 13,043 Posts Drives: BMW M340I G20 Join Date: Aug 2007 Location: UK iTrader: (2) Garage List 2015 BMW 435d [0.00] 2009 335i [0.00]	Sounds like they didn't use https://www.screwfix.com/p/mapei-bui...te-2-5kg/70239 __________________ -------------------------------------------------------------- Current car.M240i. Previous.MINI JCW. E92 325i. 435d M235i.M135i. 635d Coupe, E92 M3 manual, E92 M3 DCT Competition Pack. E92 335i, Porsche Cayman S Gen2, 135i Coupe. E92 320d, MK5 R32. MK5 Golf GTi,MK5 Golf GT-TDI,E46 318Ci.
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04-30-2018, 06:25 AM	#21
chris-c Lieutenant Colonel 901 Rep 1,801 Posts Drives: F31 340i RWD Join Date: Feb 2018 Location: Kent iTrader: (0)	/\ what he said. Its always a silicon sealant at the join to allow flexibility. I was going to say I've often seen it in a dark grey that looks very neat.
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04-30-2018, 08:12 AM	#22
Mr Burt Lieutenant 691 Rep 590 Posts Drives: F31 340 Join Date: Mar 2016 Location: Shropshire iTrader: (0)	Grout related question, while all the experts are gathered in one place. Best way of removing stained grout prior to regrouting?
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