Shingles are visible, but underlayment and flashing are part of the weather-management assembly. A replacement estimate should explain all three.
Check the proposal for what goes below the shingle and around roof openings. Those details explain how water is managed at places where the shingle alone cannot complete the assembly.
Talk with Dekoven Roofing about which materials and installation options may fit your roof.
An asphalt shingle roof is a system. The shingle is the visible layer, but underlayment, flashing, ventilation and decking together determine how well the roof sheds water.
Two proposals naming the same shingle can differ in underlayment, flashing replacement and ventilation. Compare those lines before comparing price.
If a component is missing from the proposal, ask whether it is included, reused or excluded.
Which components are included and which are reused? What underlayment is proposed and where is it used? How will flashing at walls and chimneys be handled?
Ask whether existing flashing is reused or replaced and why.
It should be considered. Ask what is included.
Yes. It is a secondary barrier. Ask what is proposed.
Practical roofing guidance for property owners and managers in Milwaukee, southeastern Wisconsin and Houston.