Suspended floor Foundation
Suspended floor foundations is a common foundation in New Zealand. This type of foundation typically consists of timber boards or sheets fixed to a series of joists. The joists rest on timber beams called bearers, which are fixed to piles in the ground. There are two main kinds of suspended floor foundations, those that are supported on piles and those with perimeter concrete foundations.
Piled foundations comprises of a series of posts or poles inserted into the ground, constructed from concrete, steel or treated timber. Piled foundations are a fantastic solution for homes that sit on sloping sites or where the ground is week near the surface. Depending on the conditions of the site, piles are installed by excavation, driving or drilling, and are categorised as either ‘deep’ or ‘shallow’. Deep piles frequently require highly specialised expertise and equipment. Shallow piles can be less complex.
Slab foundations are becoming more and more popular over recent years as they are the more simpler of foundations to build. Concrete slab house foundations are a concrete pad that’s poured directly onto the ground. This involves less site prep than other foundation types and works well on level sites in warmer climates. Many slab foundations utilize post-tension cables or reinforced with steel rods These are used to make the slab exceptionally sturdy and capable of holding the load-bearing weight of the house. The concrete slab is usually placed on a layer of sand in order to enhance drainage conditions and to act as a cushion.
Crawl Space Foundation
A crawl space is a type of elevated foundation that utilises footings and block walls around the outside to support the house. Crawlspace foundations are a better option for slopes because less excavation is required. Placing a crawl space under a home allows air to circulate underneath. In hot climates, this can keep the home cool. Another crawl space foundation advantage is the ability to use the space to house your plumbing and electrical wiring. Ductwork, sewerage and other plumbing can run easily in the crawl space. It also makes it very easy to service and repair over the houses lifetime.