Do Compactors Damage Houses?

Vibration

• The vibrations that the compactor creates depend on the size of the machine. Damage can also depend on how long it is used and how close to the house it operates. The problem with this vibration is that it is absorbed not only by the soil but by surrounding structures, especially the foundations of houses. This vibration has the potential to cause cracks in foundation walls and supports or to amplify existing damage.

Vibration Damage

• Vibration damage from compactors can be a tricky issue. In many cases homeowners sense the vibration before it has any effect on houses, and actual damage is rare. Circumstances can lead to homeowners blaming previous damage on the soil compactor even when the damage already existed. If there is a danger of building damage, the team or contractor using the compactor should take a careful survey of surrounding houses to chart current damage so it cannot be blamed on the compactor.

Foundation Weight

• While immediate damage from the vibration effect is a possibility, the long-term effects of soil compaction can be even worse. When soil is compacted against a foundation that is already present, it adds weight to that foundation, increasing the amount of soil the foundation needs to resist per square inch. This can eventually lead to the buckling of the foundation, a serious problem that requires remodeling and additional support.

Foundation Pressure

• Foundation pressure is different than foundation weight. When soil is compacted, it can trap water more easily against the foundation. Not only can this cause drainage problems and moisture damage, but the water exerts a weight of its own, leading to higher pressure and the potential future cracking and buckling of walls.