Proper roofing ventilation will save you money in the long run. Minimizing heat in your attic space will reduce the amount of cooling you will have to do during the summer months and reduce moisture in the winter. A good roofing ventilation system will provide an equal amount of air in and out. In addition to having roofing vents or ridge vents (at the top of your roof) which let the hot air escape, you also need to have intake vents or soffit vents that allow air to pass in from the bottom.
Generally, you should have at least the same amount of intake as you have exhaust. A good rule of thumb is to have 1 square foot of ventilation for every 150 square feet of attic space; half should be intake and half exhaust.
When you have questions about roofing including proper ventilation, give Hodges Roofing a call. We are experts in insuring you have the best roofing system to protect your most valuable asset.