The overhead garage door can be a big source of drafts and heat loss. Recently installed doors usually include a weather-stripped stop around the perimeter. But older doors may be lacking a weather strip. Luckily, it’s an easy fix. Garage door weather stripping is available at home centers and hardware stores, and installation is straightforward. If your overhead door is uninsulated, search online for “garage door insulating kits.”

An insulated garage will stay cooler in the summer and warmer in the winter. The first step is to be sure the attic is well ventilated. Check to see how many attic and roof vents you have. A good rule of thumb is a total of 1 sq. ft. (144 sq. in.) of vent opening per 300 sq. ft. of attic divided between the soffit and roof vents. For a typical 20 x 22-ft. garage, you’d need about six 4-in. x 12-in. soffit vents and two standard square roof vents. Make sure your ventilation is effective by installing vent chutes between the trusses. Vent chutes have a channel that prevents blown insulation from blocking the airflow from the soffit vents to the attic space. Plug the area under the vent with wood blocking or plastic and a chunk of fiberglass insulation to prevent wind from blowing up through the insulation or insulation from filling the soffit.
On the exterior we remove the siding on the front of the garage and installed new hardboard siding that matched the original on the building. Electrically we removed and relocated existing lights and added a ceiling fan as well as recessed lighting. Some additional outlets and network wiring was installed then connected to the home and panel box. The interior was insulated in areas such as the ceiling, stairwell and miscellaneous sections of the walls. We laminated (overlay) the existing sheetrock with 3/8″ wallboard on the sidewalls and stairwell and 1/2″ for the ceiling.
Naturally, you have to know the cost of these things in order to calculate what you can afford to spend. That’s also the best way to ensure that you don’t stumble across any unwelcome surprises during the execution of your project. Using our free estimate for your garage remodel will help you create a realistic budget that actually meets your needs!
Conversion: Depending on your circumstances you may want to look into how to convert your garage into a functional room. This is not always the best option, and largely depends on what other houses comparable to yours look like. If other homes in your area have more square feet available, or more bedrooms it may make sense to convert your garage into a bedroom.
Paint manufacturers have recognized these problems and have come to the rescue with new solutions. But a word of advice: If your garage floor sees heavy water leakage, if it's badly cracked or if it's damp and slimy all summer, don't apply any coating. In those cases, you're better off simply keeping it as clean as you can and then calling it quits.
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