If you are taking cash out of a refinancing and/or folding the closing costs into the new loan, watch the loan-to-value ratio of the new mortgage. If it's above 80 percent, you will have to purchase private mortgage insurance, the added cost of which may make the refinancing less attractive.
The use of ridge vent has increased greatly during the past ten years and when used with a soffit vent or vented drip edge, it is a very effective means of venting rafter bays, especially in cathedral ceiling areas. An air space in the rafter bay must be provided for full airflow. There are various styrofoam vent channels that, installed in the rafter bay, keep the insulation from fully filling the bay, to allow for air space. This can help keep condensation from forming on exposed roof nail ends and dripping onto the ceiling materials below during winter months.