Clean It Up

UK General Cleaning Forum => General Cleaning Forum => Topic started by: richywilts on March 23, 2010, 11:54:53 pm

Title: white marks/spots block paving
Post by: richywilts on March 23, 2010, 11:54:53 pm

one of my window cleaning customers woud be interested in a large driveway clean however the drive has lots of white spots (i rhink its effloressence) or sumfin does pressure washing remove these or are they permanent???

if they are permanent wat products may be worth tryin to remove them???

cheers richy

Title: Re: white marks/spots block paving
Post by: cleaner-exteriors on March 24, 2010, 12:04:47 am

what sort of drive? any pics?

Title: Re: white marks/spots block paving
Post by: BDCS on March 24, 2010, 06:47:12 am

Is it newish block paving ?

Title: Re: white marks/spots block paving
Post by: richywilts on March 24, 2010, 10:01:18 pm

id imagine it must be ten years old blocks have lost that smooth look to them i think i cant say i really looked that closely!!

Title: Re: white marks/spots block paving
Post by: Alan McTernan on March 24, 2010, 10:15:10 pm

Quote from: richywilts on March 23, 2010, 11:54:53 pm

one of my window cleaning customers woud be interested in a large driveway clean however the drive has lots of white spots (i rhink its effloressence) or sumfin does pressure washing remove these or are they permanent?

Efflorescence is when salt comes out of the material. It normally comes out about 3-6 months and is then gone after 8-12 months (roughly). So i doubt that the white marks are this!!! Have you got any photos?

Title: Re: white marks/spots block paving
Post by: stalwart on March 24, 2010, 11:08:15 pm

lichen?