Foundation Repair Tips in Multi-Generational Houses

A dry-laid stone foundation is basically charming and was standard practice for a lot of houses a hundred years passed. This kind of foundations was hand-laid by the farmer whose home would sit on them with the use of a stone. As a matter of fact, some of those old foundations still want to survive nowadays however, with generations go by, room remodeling and additions might have added foundations of poured cement or concrete block. Actually, such a foundation hodgepodge needs a touch of a professional in order to properly repair or maintain foundation.

Stone Foundations

These old stone foundations need much of an attention. Dry-laid stones are not often a weakness most especially if the foundation doesn’t reach down under the frost line. The setting of the ground and the periodic upheaval above the frost line may lead to cracks of the foundation. In a dry-laid stone, the stone wall can move and flex slightly without telegraphing the house walls movements.

Finding the actual frost line is a bit tricky however, most modern foundations will basically reach down between 24 to 30 inches. Professional and highly reputable foundation repair service providers like foundation repair Denver CO will survey and inspect the current dry-laid stone foundation as well as assess its depth.

Therefore, if your house with dry-laid stone foundations has a pest or moisture problem, professionals can always repair the issues by injecting mortar in between the stones in order to lock them all together, whether you’ve got a full basement or crawl space.

Hybrid Foundations

The real problem for any repair of foundation is the combination of foundation materials, since this always happens when a generation adds on to a much older house or original farmhouse. In addition to that, as the years go by, a typical house may have a lot of foundation materials which include:

  • Brick
  • Dry-laid stone
  • Concrete block
  • Poured concrete that has steel rebar reinforcement
  • Mortared stone
  • Poured concrete

Each material has its own unique problems but where the different materials meet, complicated forces are at work:

  • Different rates of ductility (stretching forces) and malleability (compressing forces)
  • Unequal thermal expansion
  • Compression and tension

Symptoms and Solutions

Once foundations include a mixture of different foundation materials, cracks, where the different materials meet, are the initial signs of weakness. Every portion of the foundation should be fixed with the use of methods suitable to that part. The crack between such as concrete block and stone may be filled and then, sealed.

Furthermore, poured concrete will eventually crack at corners, sometimes letting the whole wall to rotate in big pieces. This deformity isn’t sudden or obvious but can be corrected with the use of carbon fiber strips, wall anchors or helical piers. None of these remedies, however, can be used on the stone wall. Concrete block and brick will actually crack in a stair-step manner along mortar lines. On the other hand, carbon fiber strips are perfect for repairs to stabilize foundation walls. A long-lasting solution is to scrape the exterior of the foundation, give plenty waterproofing and backfill.