Re: Sealing driveway lock blocks

I must say that I've laid thousands of square metres of block paving and never used a chemical sealant on any. Having now looked at some of the arguments for using sealants my opinion hasn't changed and seems not just an unneccesary expense, but also could be detrimental to future cleaning and maintenance. However, having said all that, you pays your money and you takes your choice...

Re: Sealing driveway lock blocks

If you seal the blocks/bricks and the sanded joints between them, how do you prevent rain water from running off instead of just soaking away?

Re: Sealing driveway lock blocks

The water simply runs down the drain.

Re: Sealing driveway lock blocks

I don't have a drive way now but when I did, I never sealed the blocks. I just used one of those wire brush thingies on a stick which worked quite well. Having said that, if the blocks have been jet washed then perhaps a sealant would be a good idea. I jet washed the old paving slabs around my shed and they looked great but they go green really quickly now. I think jet washing removes the surface.

Re: Sealing driveway lock blocks

Jet Washing is good for the soul.

Its good karcher.

Re: Sealing driveway lock blocks

Re: Sealing driveway lock blocks

Spraying the surface with something might help.

Am not really convinced with sealing these blocks, since they're not really designed for it. There might be a problem with trapped water expanding during cold weather and spalling/cracking them.

Re: Sealing driveway lock blocks

Fine, but doesn't that contribute to possible flooding? At least with unsealed block/brick paving any rainwater has a chance of soaking into the soil underneath.