What type of foundation requires waterproofing due to a high water table?

A masonry foundation wall is required to have waterproofing in areas with a high water table because it is porous and can absorb water. When groundwater is present, there is a significant risk that the walls can become saturated, leading to moisture problems inside the building. This can result in damage to the structure, deterioration of materials, and an unhealthy environment due to mold and mildew.

Masonry materials, such as concrete block or brick, do not inherently have waterproof qualities, making it essential to apply a proper waterproofing system. This often includes the use of membranes, coatings, or drainage systems to divert water and protect the wall surface from moisture intrusion.

In contrast, concrete slabs might not require the same level of waterproofing, as they can be designed to mitigate moisture through proper site grading and drainage. Wood frame foundations might not demand waterproofing to the same extent, unless they are situated in particularly wet areas or poorly drained soils. Steel frame foundations usually do not experience the same moisture issues as masonry because they are not as porous, though they can be susceptible to corrosion if not adequately protected from moisture exposure.