Answer :
Final answer:
It is considered good practice to keep siding slightly away from the roof when installing roof/sidewall flashing to prevent potential rot of the wood siding. The recommended clearance is 1/4 inch, allowing water to drain off and prevent absorption and consequent decay of the wood.
Explanation:
When roof/sidewall flashing is installed with wood siding used as counter flashing, it is good practice to keep the siding slightly away from the roof because this prevents potential rot and damage to the siding material. This is due to the fact that, if the siding is in direct contact with the roof, it can absorb water, which can cause the wood to decay over time.
The recommended clearance between wood siding and the roof surface is generally 1/4 inch. This small gap allows water to drain off the roof, rather than being absorbed into the siding, therefore preserving the integrity of the wooden material and enhancing the lifespan of both the siding and roof.
By providing a slight gap between the siding and the roof surface, any moisture that may accumulate can also drain properly and not be trapped against the wood siding. This helps to prevent rot and damage to the siding over time.
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