Foundation and Structural Repairs
Foundation damage can occur for a number of reasons. Settlement, or consolidation of soil below foundation walls or footings is one cause. Lateral pressure exerted by soil or water is another reason you may need foundation and structural repairs. Sometimes damage occurs because of improper construction or deterioration.
Old stone foundations were typically constructed with a weak mortar consisting mainly of soil and lime. The primary purpose of this mortar was to fill the voids between stones so that vertical loads could be supported. Stone basement foundation walls are usually at least 18 inches thick (20 inches or more is common). Since large stones were often not readily available the walls were often constructed as two parallel walls with larger stones spanning across both walls to create a monolithic wall. If enough large stones were not used or if the mortar joints deteriorated significantly over time these foundation walls weaken and can bow, buckle, or fail.
Block basement foundation walls often develop horizontal cracks at mortar joints and can bow or buckle inward. Occasionally block foundation walls can fail suddenly, as shown in the photographs on this website. These failures can occur following heavy rainfall, poor drainage, grading & a build up of hydrostatic pressure. Homeowners insurance does not cover repairs to damaged or failed foundations.
Keystone Waterproofing & Restoration Services has successfully designed repairs for many foundation walls including the following guaranteed repairs:
- Steel Support Systems
- Total Wall Replacement
- Rod Inserts