How can weather forecasts and material requirements affect a roof-replacement schedule?
Three scheduling questions
Before the roof is opened, ask what forecast conditions or site conditions would postpone work. The contractor should consider safe access and the selected materials, not only whether it is raining at the moment. Homeowners should not pressure a crew to work through a fall or electrical hazard.
While work is in progress, ask how much roof can be protected before the crew leaves and what happens if weather changes unexpectedly. Temporary protection should have an identified purpose and owner; it is not automatically a permanent substitute for the specified roof layers.
If a product needs particular application or bonding conditions, ask for the current instructions for that exact product. Obtain the contractor’s explanation of how the proposed sequence meets them. An instruction for one shingle, membrane or sealant does not establish acceptable conditions for another.