I had an "expert" look at my patio (only 6m old) and recommend that I should have sealant applied to it to make it last. I'd not heard of this before and googling is giving me mixed messages. Since this guys job was selling/applying sealant then I'm concerned he might be a tad biased :-)
Its a sand stone pavers, not particularly expensive ones.
Some of my thoughts are:
- Old building have sandstone paths that have been there hundreds of years and are doing fine - I doubt they were sealed?
- Some websites suggest it will change the appearance of the slabs?
- Some site also say you need to reseal after a few years - if you don't reseal will you just be back to if you hadn't sealed it, or is it a case of once you've done it once you have to keep going?
- We were told not to use a power wash on the stones, but the sealant guy says you can do exactly that once sealed - so it is tough stuff sealant then?
Is it really something important to do (similar to say treating the wooden fence), or just a waste of money?