I live in west-central Oregon on the sand dunes. I have a large driveway that needs replacement; it’s about 2,500 sf. Several neighbors have advised using pervious concrete because of drainage concerns. The pervious concrete would also reduce some issues with sloping the various parts to a common drain. I’ve seen some pervious concrete in town and am satisfied with the different look.
I have a concrete contractor that’s well respected in my town and they are bringing in an excavation company to remove the existing concrete, several old tree stumps, and two trees.
Both contractors advise against pervious concrete. They say, it’s more difficult to install, is about 30% more expensive, and in our environment – the sand dunes next to the ocean – the concrete “pours” get clogged with sand, pine needles and sap. They both say that I will be sweeping and power washing the concrete “all the time.” I don’t think they’re trying to deceive me, but I’m a city Planning Commissioner and I would like to set an example for changes we’re asking other property owners to make.
Are these issues great enough to weight against using the pervious concrete?