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Retaining wall moves away from patio each season and gravel flows out
I have an 8ft retaining wall that seems to "leak" sand and gravel resulting in me periodicly needing to tear up the flagstone patio and fill in the voids. This time I added extra drainage -- but not at the flagstone part. In the photo the "leaking" gravel can be seen in the left and a quarter inch crack has opened up-- I think because of either water flow or an ice dam that forms next to the retaining wall. The crack is too small to add gravel but sikaflex or PU foam or polymer sand could be added. How can I best fill the void? I want to ensure my patio does not collapse down as that would make the water situation worse. I'd like to use a material that won't flow out and to use a material that is compressible so that if ice forms, the material flexes instead of pushing on the bricks of the retaining wall further widening the gap. And I'd like to do it either from the gaps between the bricks that make up the retaining wall or from the existing crack. submitted by /u/Fearless-Weekend-680 [link] [comments]
| | I have an 8ft retaining wall that seems to "leak" sand and gravel resulting in me periodicly needing to tear up the flagstone patio and fill in the voids. This time I added extra drainage -- but not at the flagstone part. In the photo the "leaking" gravel can be seen in the left and a quarter inch crack has opened up-- I think because of either water flow or an ice dam that forms next to the retaining wall. The crack is too small to add gravel but sikaflex or PU foam or polymer sand could be added. How can I best fill the void? I want to ensure my patio does not collapse down as that would make the water situation worse. I'd like to use a material that won't flow out and to use a material that is compressible so that if ice forms, the material flexes instead of pushing on the bricks of the retaining wall further widening the gap. And I'd like to do it either from the gaps between the bricks that make up the retaining wall or from the existing crack. [link] [comments] |
