Any thoughts as to why in my ensuite shower the grout is slowly turning a blue/green colour?. the degree of colour change from white to blue is varied?. ie on one wall it is more pronounced. any help would be appreciated.thx

Is this the same colour as your shower gel...?...lol

Having a house full of women numerous shampoos and shower gels are used. If these are the reason for the colour change how do i prevent this re-occuring after cleaning?
thx

Try a grout cleaner...something like lithofin grout cleaner is good.....Or there are some household stuff you can use.....My good lady swears by Dettox bathroom spray....but for amore intense clean the lithofin is the way to go...and is availbale from all branches of CTD...

Its the 1st thing i look for when i get contacted about such problems. The colourings in the shower gels are the main culprit.

I agree with what the guys have said,but one time i have seen grout go greeny blue when there was a seep from a copper pipe behind the tiles.

It could actually be other things but it would be the 1st point to check. Scrape the top surface of grout away and see if its just on the surface.
I have seen it from area that were tiled over old paint too.

pervent it happening again by sealing the grout with a sealer. most good tile shops sell these products

some tilers put their level and plumb lines around with felt tip pens i seen this seep through grout joints once the bathroom is in use so this may be another possibilty pleas take note all newbies never use marker pens to draw lines always use pencil or chalk lines

does the shower head point mainly to the wall that has the most discolouration? if so are you on a private water supply? The reason i mention this is because my bro's old house had a private water supply and all his (4) blond haired children had a green tinge to their hair!

Originally Posted by Dave

Try a grout cleaner...something like lithofin grout cleaner is good.....Or there are some household stuff you can use.....My good lady swears by Dettox bathroom spray....but for amore intense clean the lithofin is the way to go...and is availbale from all branches of CTD...

thanks for info dave. i agree with the gel/ shampoo theory as mostly girls use a blue shampoo. will lithofin clean off this colour as i have tried bleach which has had no effect or can you suggest another way to mask blue prior to reseal.

Use a very fine grit rubber sanding puck like they use for plaster finishing to scuff off the surface color if the chemical cleaners aren't having an effect.
If you just use an edge (make sure you get one of the rounded edge ones)
and go lightly it should work well without scuffing the tiles.
I have done this on occasion and pack one around in my kit.

My grout turned bright red the week after fixing was complete....much thanx to the wife who decided to dye her hair RED.....she then spent a week scraping it out so that I could regrout with epoxy...and still she managed to get some dye into the tiles ....getting a divorce now and moving away from red grouts.

quite right m8! and make it quick so it doen't happen again lol!

Its from copper in your water due to inside of pipes being corroded. happens more to light tiles