Re grouting tiles or these 'White' pens?

[Magic_x_uk]

Hi, noticed in one of my bathrooms, only around a few tiles near bath/shower. Some of the white of the grout. Is turning dark.

What's the best way to bring this back to lovely sexy white.

Scrape out and re grout. Or do these pens I have seen in the likes of B & Q actually work. Or any other 'old wives tales'?

Thank you.

 

[Magic_x_uk]

yes i thought these so called 'pens' wouldn't work to well.

It isn't a lot to do, just a few bits of grout here and there. don't know why it seems to only get on certain areas.

I have heard of bleach and a nail brush.

Think it is mildew so will pick a bottle up tomorrow and have a go cleaning them.

Cheers.

 

[Magic_x_uk]

What about mildew on the silicone sealant?

As Stulid says. It is a easy job to remove, clean (white spirit) and then put down new sealant. Won't take you an hour. Hardest part is ensuring you get all the old sealant of. I use a old razor blade for that.