Cracks in basement walls and floors is fairly common in homes older than 10 years. Well designed basements actually develop hundreds of distributed hairline cracks as the concrete walls age and shrink. Sometimes, though, a crack forms that is large enough to allow groundwater to leak into the basement.
Some people fix these basement cracks with epoxy. Epoxy is a strong material, but it is very rigid when cured and cannot flex with the wall. Future movement in the structure will result in another crack in the wall next to the epoxy.
Prime Flex 900 XLV is a thin liquid resin that reacts with moisture and expands to form a closed-cell, watertight foam. When cured, 900 XLV forms a hard but flexible foam that can move with the structure. 900 XLV is usually used to seal actively leaking joints and cracks in concrete structures.
The 900 XLV resin from Prime Resins is ideal for concrete crack repair jobs where there is potential for future movement and settling in the structure. In the photo gallery below, you will see a Prime Resins leak-sealing repair job in a basement that had lots of vertical cracks in all four walls.
*NOTE: if your basement has a large horizontal crack in the wall, you should seek advice from a foundation contractor or structural engineer. A horizontal crack could indicate the wall is about to fail.
Fix Leaking and Cracked Basement Wall with Prime Resins 900XLV Foam