Vapour Resistance

Vapour Resistance Units Converter

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Enter the thickness of the material and one other property

	Thickness	mm

Properties that apply to a particular thickness of material

	Vapour resistance	MN s g^-1
	Equiv. air layer thickness (Sd)	m
	US perm	grain hr^-1 ft^-2 inHg^-1
	SI perm	ng s^-1 m^-2 Pa^-1

Material properties (independent of thickness)

	Vapour resistivity	MN s g^-1 m^-1
	Water vapour res. factor (μ)
	Kinematic diffusivity	m^2 s^-1