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If you plan on heating your garage, you must install a vapor barrier when drywalling the garage. A vapor barrier protects your garage from frost and mold that can occur through condensation. If your garage is unheated, you don't need to install a vapor barrier. The only exception is if you regularly crank the heat in your car before getting in it. In this case, you may still want to install a vapor barrier, as your car can heat your garage.

You can use a wide variety of finishes for garage doors, and the choice comes down to personal preference. You can use a semi-gloss, eggshell enamel sheen, matte, or satin enamel. You may even prefer a solid color wood stain. The key is finding an exterior paint that can withstand the elements your garage door is so frequently exposed to.

New garage doors are often worth the investment because they improve the appearance of your home, make it more secure, and add to your property value. Installing a new garage door costs $1,200 on average, but you’ll have greater peace of mind that your garage door will function properly and keep your home safe. If you sell your home shortly after replacing your garage door, you’re expected to see close to a 100% return on investment, which is significantly higher than most home improvement projects and almost instantly makes the project worthwhile.

You’ll usually need to prime a garage floor before painting—especially if the floor is unpainted. Garage floors are made from concrete, which is porous and produces dust. The dust can contaminate the paint and cause issues with adherence. 

Primer creates a barrier and gives you a clean surface to work on. It also minimizes absorption to help give you an even, pro-looking paint job. Make sure you choose a primer that’s specifically designed to cover concrete flooring.