On 23/08/2014 19:34, curious wrote:
Have used pressure washer and patio cleaner every other year to clean
the patio / yard. The cold caller said his steam washer and sealer
would bring it up like new I was just wondering how that could make
15 year old paving slabs look like new.

The only situation where a steam or hot water washer gives better
results is where grease,oil or fat is involved. The heat would make no
difference when cleaning slabs.

--
Dave - The Medway Handyman www.medwayhandyman.co.uk