Unconventional foundations
A foundation repair specialist is likely to have a number of interesting stories to tell after many years of repairing sagging slabs, broken footings, arched foundation walls, and seriously leaking basements. In the midst of a mixed work history, an expert is sure to point out some unknown fundamentals. This article will provide some brief descriptions of three types of foundations that have become popular alternatives to more conventional construction.
Every foundation has its day
Although each of these alternative foundations offers specific advantages compared to conventional block or poured concrete foundations, it is important to note that all foundations experience the inconvenience caused by soil and drainage problems.
In other words, these alternative foundations can also move, settle, bow and crack if soil conditions are bad enough or if drainage problems cause excessive erosion or persistent water pressure.
Whatever the case, the remedy remains the same – homeowners should call in an experienced foundation repair specialist to get the right tools, materials, training, and engineering support to solve a wide range of foundation problems. foundations.
Permanent wooden foundations – PWF
This type of base is sometimes called an “all-weather wood base.” As the name suggests, the base is made entirely of wood: 2×4 or 2×6 frame solid wood with plywood cladding nailed to the outer face of the base wall.
Pressurized chemical treatments fully penetrate the pores of the wood to protect against rot and insect attack. PWF walls are nailed together like standard wood frame walls, but corrosion resistant fasteners are used. A concrete base is not required; the walls can be erected on a compacted gravel base. This type of foundation was developed for cold climates where concrete and mortar could not be used, but it has not been limited, it has also been used in temperate areas.
Insulated concrete formwork – ICF
The wood or steel forms used in a conventional poured concrete base are designed to be removed after the concrete has been poured and has had a chance to harden. But ICFs stay in place after they have been filled with poured concrete. These shapes are made from lightweight foam and are designed to interlock like giant LEGO ™ blocks. This allows workers to mount an entire foundation wall with surprising ease. The hollow areas within each foam portion create a network of connected channels for the poured concrete to fill. Thanks to the insulation value of foam, ICF walls are more energy efficient than conventional concrete foundation walls. But exposed foam surfaces must be protected with finish or drywall to prevent damage from sunlight, impact, and abrasion.
Precast panel foundations
This type of foundation consists of factory-made wall panels that are trucked to the site, set in place on a compacted gravel base, and then fastened with adhesive and bolts. Precast panels have a smooth concrete exterior surface. Rigid foam insulation and studs are integrated into the inside face of each panel. Like an ICF foundation, this construction technique offers the advantage of insulation to improve energy efficiency. A paneled foundation for a modest-sized house can usually be erected in a single day.