You will also need underlayment materials such as water-resistant felt, decking if part of the underlying roof is water-damaged, and new flashing. Or should we have a contractor cut into our soffit under the eave to install the vents there. Also, at least 2 contractors never said one word about our lack of ventilation suitable for a ridge vent. Factors that affect cost include the type and grade of material used, the complexity of the roof including the slope and number of valleys it has. In gen...

You will also need underlayment materials such as water-resistant felt, decking if part of the underlying roof is water-damaged, and new flashing. Or should we have a contractor cut into our soffit under the eave to install the vents there. Also, at least 2 contractors never said one word about our lack of ventilation suitable for a ridge vent. Factors that affect cost include the type and grade of material used, the complexity of the roof including the slope and number of valleys it has. In gen...

You will also need underlayment materials such as water-resistant felt, decking if part of the underlying roof is water-damaged, and new flashing. Or should we have a contractor cut into our soffit under the eave to install the vents there. Also, at least 2 contractors never said one word about our lack of ventilation suitable for a ridge vent. Factors that affect cost include the type and grade of material used, the complexity of the roof including the slope and number of valleys it has. In gen...