Does the construction involve infill slabs?
Infill slabs often cause problems. Edges are hidden from view, and it is hard to avoid inconsistencies in the overall barrier system. Lack of access for inspection means chemical barriers must be re-treatable. Applying chemicals through drill holes is also possible but is rarely a viable option. Avoid infill slabs or seek specialist advice. How will excessive moisture in dark subfloor spaces be avoided? Moist soil under the house allows termites to make the mud shelter tubes they use to advance up the subfloor structure and into the house. Consider effective perimeter drainage, especially at the base of cut areas. Consider using impervious ground membranes or open sub-floor construction to keep the sub-floor dry and naturally lit. Does the project include landscaping and paving works? Plan finished ground and paving heights so as not to disrupt or bypass barriers. Also make sure that construction does not obstruct sub-floor ventilation.
