Cracks In New Concrete Slab Foundation

Cracks between 1 8 and of an inch often result from house settling or concrete shrinking within a few months after construction and so.

Cracks in new concrete slab foundation. Hairline cracks are commonly observed in freshly placed concrete and their occurrence is owed to the phenomenon of plastic shrinkage. Correction of foundation and structural problems can be very costly and occasionally foundation cracks will be a warning sign of other structural issues with a home. These cracks also occur when the concrete is cured incorrectly i e if the surface dries much. The second type of crack that can appear on the foundation of a new home is due to ground movement.

Just like a balloon heat causes concrete to expand. 64 4 237 1170 fax. Private bag 50 908 porirua 5240 new zealand phone. When concrete expands it pushes.

To do this a foundation crack contractor will inject a flexible polyurethane to seal the openings. While these cracks are sometimes seen in homes with poured concrete foundations they are most common in homes with concrete block or brick foundations. I purposely had the slab made thicker 6 inches with heavier rebar and a fiber type additive to hopefully minimize this from happening. As the name implies these cracks are very small about 0 003 inches 0 08mm in width and can be very shallow.

Six common types of cracks in your concrete 1. They are primarily caused by the concrete. Contents causes of hairline cracks in concreteprevention of hairline cracks in concreterepair of hairline cracks in. If the crack is wider than 1 8 inch it should be sealed.

When concrete is still in its plastic state before hardening it is full of. Types of cracks in slab foundation. Plastic shrinkage concrete cracks. Cracks caused by ground movement under the new house.

These are extremely thin but possibly deep cracks. 98 of the homes in the united states have foundations constructed out of concrete masonry blocks or brick all of which tend to crack when there is movement and excessive stress. My new house built on a concrete slab is about 60 done framing and drywall are in. 64 4 237 1171 email.

My concern is i have several hairline cracks throughout the slab. Branz corporation concrete slabs and conrol joints build aug sept 2005 branz moonshine road judgeford porirua city 5381 new zealand post.