Solid floors are a lot more substantial and require the ground to be made up in layers of ground sub base, sand, compacted hard core, damp proof membrane, insulation and concrete. Another advantage of a suspended floor is that in some circumstances where your property is on a sloping site, using a solid floor can be very expensive as the walls to support the ground underneath would be very substantial and in turn, expensive. Lightweight design using suspended timber floors makes good building sense with real benefits to home owners, builders and the environment:. Building off the ground means at least one can get underneath and inspect for evidence of termites trying to enter. She is worried about the survey report on the floor where it says that the ground floor is part suspended timber and part solid concrete, in the bathroom and kitchen.
In recent years the site-built timber joist suspended floor has been losing market share to precast concrete solutions indicating that the traditional process of providing a structural timber floor is not appropriate to today s construction needs. Figure 1.1 Domestic housing ground floor market trend (Data Sources: NHBC 1986 & TRADA Technology 1997). Perceived advantages and disadvantages of timber and concrete floors, are summarised in Table 1. The other saving he mentioned was a suspended floor instead of solid one. It’s not open to the ground below the joists is it? Also, despite insulation, the air void means that you lose the benefit of heat and mass from the ground – which is even more pertinent as you are planning to instal underfloor heating.
I think a lightweight timber floor is also more comfortable than a concrete slab to walk on. The main advantage (of ground slabs) I know of is the cheaper initial cost. Suspended timber ground-level floors are useful on sloping sites where a great deal of filling would be required to level the ground for a solid floor. The main advantage of a reinforced-concrete suspended floor is its greater fire resistance and better sound insulation than that of a timber floor, but it is generally too expensive to find applications in farm buildings. The major benefit to house builders is the removal of the need to construct sleeper walls due to the large spans provided by beam and block construction.
Timber Floors: Improvements Through Process Re-engineering
There are many advantages of piled foundation. Suspended timber floors at ground floor level have dependably been viewed as helpless to woodworm and dry decay and hence present building regulations require dampness evidence, solid blinding layer underneath such floors. A suspended timber floor, where the floorboards sit upon wooden joists can be insulated in one of two ways:. As is the case for loft insulation, the thicker the wool, the better the insulation will be, however you definitely do not want the insulation touching the ground beneath the suspended timber floor so make sure the net does not sag to that extent.