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We've got a 1960 split level, family room exits right onto a patio and the family room is at ground level (actually lower than some of the yard). No step down.
6 years ago or so we had the broken original concrete slab patio taken out and I laid a brick patio... 6 inches of gravel, two inches of sand, graded away from the house, everything was hunky dory. It wasn't perfectly smooth or anything and would buckle a bit in winter, but worked fine for our needs & aesthetic.
This winter though... with the constant thawing and re-freezing going in on February we wound up with 5 or 6 inches of ice on most of the patio and meltwater freezing among & under the bricks causing much worse buckling than ever before. Of course the 18" or so closest to the house had no ice - between the second story overhang and the fact that we have a heating pipe in the slab right in front of the door, there was just no accumulation there.
All of which is well and fine until we got that 38 degree and heavy rain day earlier this month. Lots of new water, but not warm enough to melt the ice pack even a little. So even though the patio was graded away from the house, the grading of the ice caused all the rain water to flow toward the house and ultimately into it.
I got the patio cleared, carpet dried out & replaced, the threshold of the door torn out, foamed caulked & replaced... andd chance of this kind of weather occurring again soon is pretty slim, but I want to make sure this shit doesn't happen again. So as soon as the thaw is complete I'm planning to take the whole patio up, put some drainage in, regrade the sand before putting the bricks back down.
So... PVC drainage pipes? Going which way? Diameter? Etc. Was also looking at this smart drain micro-iphon stuff http://www.smartdrain.com/products.asp but have no idea how much it costs etc.
I'm tempted to run a pipe parallel to the house just in front of it all the way out to the driveway, where it would theoretically drain. Or I could tie the one parallel to the house to ones running perpendicular, then tie those into a really long one all the way out the walkway.
Anybody done a similar project, let me know how you tackled it, whether it worked, thoughts & advice etc. ------- so I'm in a band now: album ---> http://greenwoodburns.bandcamp.com/releases Soundcloud ---> http://soundcloud.com/greenwood-burns
my own stuff -->http://soundcloud.com/lonesomedstringband
avy by buckshot_defunct
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