Floor tile grouting: how to whiten & protect?

ednotdave

I have ceramic floor tiles with white grout that has now gone grey/black in places. What is the best way to re-whiten the grout and then protect it?

Thanks...

calmgirl

The best and therfore the most time consuming and expensive is to take up all the old grout and re grout with a silcone based grout(very expensive). Other than that buy a grout rake from b&q about £3.00 and take off all the discolouring touching up all the black bits buy masking off the tiles and get floor gloss

Despr8dan

I have used Flash spray with bleach and a stiff bristle tooth brush to clean up white wall tile grout. Would probably work on the floor as well.

To protect grout once it has fully dried use a solvent based tile grout protector (just ask at any tile retailer). It's a bit tedious to apply, I used a small brush.

ednotdave

Thanks for the above - any more ideas, please?

mhuk

Bleach or steam. Never heard of silicon grout but epoxy grout will do the job

Red_Elle

Despr8dan wrote:

I have used Flash spray with bleach and a stiff bristle tooth brush to clean up white wall tile grout. Would probably work on the floor as well.

To protect grout once it has fully dried use a solvent based tile grout protector (just ask at any tile retailer). It's a bit tedious to apply, I used a small brush.

Can't add anything, but just wanted to say that since I discovered Flash with bleach I haven't used anything else on tiles. Spray, leave for 10 mins and shower off.