RE: Pervious Concrete Paving
From: Buzz Harris (
Date: Sat, 7 Jan 2006 14:00:33 -0800 (PST)
I have a different pervious concrete question. In looking over some of the manufacturers' websites, it is noted that sand, grit, and dirt can clog up the pores in the material and prevent water from draining through. The recommended method of cleaning is vacuuming with a dry vac machine on a fairly regular basis.

Do any cohousing communities use this type of surface for paths or parking, and have there been problems with dirt, etc. settling in and preventing good drainage? Do you vacuum the surface, as suggested?



At 03:14 PM 1/6/2006, you wrote:
Good questions.

I do not have direct experience with pervious concrete in areas where the
ground freezes. It may be that since water does not remain in the matrix it
is not a problem, but maybe this is why you don't see pervious concrete
taking over the northern states! Perhaps the Concrete Network has more
information on this.

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