NCC Condensation Management Calculators
Select the appropriate calculator to determine your product requirements to assist with your ventilation compliance with either NCC 2022 or NCC 2025.
NCC 2022 Calculators
10.8.2 Exhaust Systems
Use this calculator to determine product requirements for venting fans and range hoods externally. (All climate zones)
10.8.3 Ventilation of Roof Space
Use this calculator to determine open area and product requirements for high and eave level ventilation. (Climate zones 6, 7 and 8 only.)
NCC 2025 Calculators
10.8.2 Exhaust Systems
Use this calculator to determine product requirements for venting fans and range hoods externally. (All climate zones.)
10.8.3 Ventilation of Roof Space
Use this calculator to determine open area and product requirements for high and eave level ventilation with the primary insulation layer not parallel to the roof plane. (Climate zones 6, 7 and 8 only.)
10.8.4 Ventilation of Roof Space
Use this calculator to determine open area and product requirements for high and eave level ventilation with the primary insulation layer parallel to the roof plane. (Climate zones 6, 7 and 8 only.)