After an cheap contractor did my bathroom, I found the grout crumples into
powder with moderate scraping -- as if scraping a piece of chalk.

What might be the cause of this so I don't make the same mistake, if I
decide to regrout?

peter wrote:
After an cheap contractor did my bathroom, I found the grout crumples into
powder with moderate scraping -- as if scraping a piece of chalk.

What might be the cause of this so I don't make the same mistake, if I
decide to regrout?



Old material and/ or improperly mixed.

http://www.super-tek.com/doit7.htm

"peter" wrote in message
news:0rNge.1985$qT1.447@trnddc06...
After an cheap contractor did my bathroom, I found the grout crumples into
powder with moderate scraping -- as if scraping a piece of chalk.

What might be the cause of this so I don't make the same mistake, if I
decide to regrout?

incorrect amount of water used to mix the grout, or water was added after it
started setting rather than throwing it out.