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.
Heating & AC ($1000-$5000): Adding central heat and air into your garage can either be simple or difficult. If you have a robust heating and air conditioning system in place it is as simple as expanding your existing ducting. If the additional square footage is more than your system can handle you will need to add in a new unit. Luckily, a small garage usually is able to be fit into your existing system.
Besides a brand new room, there are plenty of other benefits that come with remodeling garages. First and foremost, if you simply update your garage with new flooring, windows, insulation or garage organizers, you instantly increase the value of your home. While you may not see a 100% return on investment the day you sale, you will surely get more than you would have before the garage renovation.
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.
Know your priorities. Will your garage be purely functional? If so, durable surfaces and systems trump expensive trappings. Make a list of what you’ll need, from storage to appliances to furnishings, and then rank every item in order of importance. That way, if you have to cut things as you get farther into the process, it will be easier to make choices.
A garage remodel can take many different forms. Some finished garages are transformed into guest bedrooms, game rooms, man caves or even master bathrooms. Others go the traditional route and clean it up to just keep their cars inside. The traditional route is certainly more cost-effective, but after analyzing national garage remodeling costs, the average price to renovate a garage is roughly $10,000.
If you have an existing garage in place, but no walls, floor, ceiling or finishes in place, the cost to finish your garage will be much less expensive than $10,000. Oftentimes, finished a garage entails adding a few beams or drywall. Contractors can install wooden or steal beams for a few thousand dollars. In addition, according to our drywall installation cost guide, you can purchase drywall for at little as $0.30/sf. If you hire a general contractor to install the drywall, expect to pay another $1,000. Overall, the cost to finish a garage should not exceed $5,000.
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.
Most unfinished garages have the bare minimum of outlets and lights, so you’ll want to add a few. And in some cases, you’ll have to reroute wiring that’s attached to the face of studs or the underside of ceiling framing. We had to reroute phone wires, door opener control wires and plastic-sheathed cable in our garage. Remove surface-mounted wiring and move it into the stud space, or reroute it over the top of the ceiling joists or trusses.