How to Fix Attic Ventilation Without a Soffit

Decide on the type of vent that is appropriate for your attic. Static vents are available in many styles and designed to go on the roof ridge, roof plane or gables. Power vents may be powered by solar power, electricity or wind turbine power. Choose the model that is right for you based on your home's needs.

Determine how many vents you will need. Static and power vents are rated by the amount of square footage they can reliably vent. This vent capacity will be clearly listed on the vent's packaging. The average attic will need several static vents or a single power vent.

Determine the location for each vent. Do this from inside the attic. Use a grease pencil to mark the location. Position static vents where air circulation will not be inhibited by insulation, rafters or any other structures. If you must install several vents, it is best to install them in a straight line. Use a chalk line to mark out a straight line. Consult with a professional to help determine the best location for power vents. You'll need the professional advice to find the best location for wiring and prevailing wind.

Install the vent. The installation method depends on the type of vent. Static vents are easy to install by cutting a hole in the attic roof to the static vent's dimensions and screwing or nailing the vent into the spot according to the vent's instructions. Power vents require extensive wiring best handled by a professional.