I have 1.5mm of white grout between rectified white tiles on my kitchen walls as a splashback (or backsplash in North America*) behind the sink and cooktop and I'm concerned about stains from food and mould.
I've read on the web I'm supposed to seal the grout using a soak-in sealant in what sounds like a very time-consuming prcoess that has to be repeated every year, forever.
Is there a more long-lasting way to do this?
Surely just using that new "no-mould-for-five-years" white silicone sealant would be better than that?
((* this is hilarious - I'm imagining some dopey kitchen contractor who says it wrong migrating from the US to Australia or vice versa and everyone picking up the wrong term))