1
Exterior Stair-Step Mortar Cracks
Stepped diagonal fractures traveling through mortar joints in exterior brick veneer or concrete masonry block walls. When a footing corner settles into desiccant clay, tension fractures develop along mortar lines wider than 1/8 inch, typically originating near corners or beneath window openings.
2
Interior Drywall Fractures at Corners
Diagonal cracks radiating upwards at 45-degree angles from interior door frame headers and window lintels. As foundation sill plates settle non-uniformly, wood framing racks and transfers differential shear stress directly through drywall paper and gypsum plaster.
3
Doors & Windows Sticking or Binding
Exterior entry doors, French patio doors, and double-hung windows that suddenly stick, bind against their jambs, or will not latch without force. This distortion confirms that wall framing is out-of-square due to foundation drop beneath that structural span.
4
Baseboard, Trim & Flooring Separation
Visible gaps developing between interior baseboards, quarter-round trim, and hardwood or tile floors. When exterior perimeter foundation walls sink while interior crawl space center piers remain stable, floors tilt downward toward exterior walls, tearing mouldings apart.
5
Bouncing, Spongy, or Sloping Floors
Excessive deflection, squeaking, or unlevel slopes across living spaces over crawl spaces. Common in Fishers homes where undersized timber cribbing or concrete masonry block piers settle into uncompacted crawl space dirt, or where high moisture rots the wooden girder beams.
6
Inward Bowing & Shearing Basement Walls
Horizontal cracks running through the middle third of concrete block basement walls, accompanied by inward bulging or deflection. Heavy saturated clay backfill expands laterally after heavy rainfall, exerting thousands of pounds of pressure that fractures unreinforced masonry mortar lines.
7
Chimney, Covered Porch, or Deck Separation
Exterior brick chimneys tilting outward from the roofline, or concrete porch slabs pulling away from siding. Chimneys and porch footings exert concentrated, heavy point loads on shallow footings. In unstable clay soils without deep piering, they settle much faster than the main house footing.
