Sarking
Most manufacturers of roof tile products indicate a minimum pitch for their product without sarking and a different minimum pitch for roofs with sarking. However, sarking is advisable under any roof, particularly if the sarking can perform two roles, that is:
- acts as a secondary protection against moisture penetration due to wind-blown spray, broken tiles, condensation, etc
- acts as a reflective foil surface to reflect the radiant heat of the sun.