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.
2022 Calculators
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10.8.2 Exhaust Systems
Use this calculator to determine product requirements for venting fans and range hoods externally.
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10.8.3 Ventilation of Roof Space
Use this calculator to determine open area and product requirements for high and eave level ventilation.
2025 Calculators
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10.8.2 Exhaust Systems
Use this calculator to determine product requirements for venting fans and range hoods externally.
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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.
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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.
Need more detail? The Condensation Management Handbook provides in-depth guidance on NCC condensation management requirements, including compliant product solutions for exhaust systems and roof space ventilation.
