Flush terrace gutter

Just one defect emerged in the Park City house over the winter. About half of the main roof drains onto the front awning and then onto the paver terrace. A lot of water hits that terrace, and much of it drains down through the terrace instead of running off the front edge. As a result, the pavers settled a lot over the winter. One of the architects had suggested the possibility of inserting a 12″ c-channel into the paver surface to serve as a gutter from the point where the water hits the terrace to the edge. I wasn’t wild about introducing a 2-3″ groove in the terrace, as I thought it would be a trip hazard. Instead I designed a nifty welded gutter assembly with a slightly sloped top surface which feeds a 3″ c-channel beneath it to drain off the terrace. Hard to explain, but hopefully the pictures are clear.

I re-laid the pavers in the areas where the terrace had settled. This time I used polymeric sand to fill the joints. (As best I can tell, polymeric sand is a mixture of fine sand and a water-curing glue…it feels like Elmer’s glue and sand when wet, but sets up to seal the joints. It seems to work fairly well. It may be belts-and-suspenders…we’ll know next spring.)

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