If you decide to expand your garage to make more room for tools or storage, this is considered adding on to your home, and costs will typically go up. Home addition costs fall between $20,000 and $70,000 for most homeowners, depending on the size and type of space built. Your contractor will frame out new walls and expand the room's foundation. If you intend to keep the space the same only reorganizing it, you may have only the costs associated with purchasing and installing shelving and cabinetry.
Another problem is moisture vapor. Moisture vapor from the ground works from below to loosen the coating's bond with the concrete. In the case of alkyd paints (also called oil-based paints), the moisture will react with the alkaline materials in the concrete and form a soap. This process is called saponification. The soap loosens the paint's bond with the concrete. Never use alkyd or modified alkyd paints on concrete.
Simple garage remodeling projects such as clearing a stain, adding insulation or repairing a garage door opener can be completed by active DIYers. However, if you’re converting your garage into a living area or adding any electrical or HVAC to the space, you should hire a professional. Piping, electricity and garage door springs are dangerous if handled incorrectly. Furthermore, simple mistakes garage pros do not make could end up costing you more in the long run. Therefore, play it safe and get a few quotes from garage pros before you start any garage remodeling project.

If the concrete slab in the garage is the problem, there are more cost-effective solutions than a concrete mason. Most cracking, flaking, stains, pitting or wear can be easily fixed by calling a concrete specialist to apply either an inexpensive epoxy or polyurethane-based coating. These seals are very durable and can make your garage floor look brand new.

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