Waterproof membranes are provided under porous surfaces in wet areas or splash zones to prevent subsurface moisture from escaping the area. This moisture must be carefully managed and given the opportunity to evacuate the environment below the finished surface by way of a leak control flange.

A thorough passive fire survey is essential. Identifying non-compliant penetrations allows for planned, rather than reactive, remediation.

During the design stage it is important to specify a drainage system that caters to the activity of the facility, allows for the desired layout and delivers reliable performance.

When detailing channel drainage be it in a domestic driveway or in a public thoroughfare, load ratings will be important along with other aspects such as slip resistance and hydraulic performance.

Ten frequently asked questions that can help with general understanding and challenges that are regularly faced in the New Zealand construction industry.