Some types of concrete blocks used in homebuilding
Modern foundations are usually made of concrete, either solid (poured) or blocks (CMU). These are the sizes we typically see but, the older the home, the more variation we see. Some builders used to make the blocks right on the building site with molds and a mixer.
While the hollow cores add strength, they also can hold up to 1.5 gallons of water each! A normal city home might be 30' on one wall. 20 blocks x 9 high = 240 gallons of water space! No wonder some walls are spraying water when it rains
Block foundation wall with crack showing how water can get into the basement
Historical photo showing a basement wall footing being poured with concrete in 1940
Rubble Basement Wall Construction showing how the rock is stacked to build the wall.
Dimple board used inside basement on walls for waterproofing
Side view of a common basement wall using blocks for construction
Finishing mortar joints between cinder blocks for the best waterproofing
Melting snow means wet basements in Minnesota.
Yard drainage pipe is filled with dirt, rain water is collecting near the home leaving this customer with a wet basement.
I Have Drain-Tile But I Still Have A Wet Basement!
Basement Waterproofing Using Above Floor Channels and Dimple Board
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