materials testing in Otago

We address indoor environmental issues (mould, air quality, dampness, etc) by addressing the entire building system. Breathe easy knowing you’re in good hands with a qualified specialist.

We specialise in asbestos testing & sampling, hazardous materials, methamphetamine & air quality testing in Christchurch, Auckland, Wellington, New Zealand.

Calder Stewart roofing is a leading supplier of premium grad roofing, cladding & spouting materials & products. Designed & tested for NZ conditions