If your new home has a detached garage that smells musty and shows signs of previous mold growth, then it is in need of some serious waterproofing work. Even if you do not have a lot of do-it-yourself home repair experience, you can make many of these inexpensive repairs yourself with some basic tools.
To waterproof your new detached garage to keep all of the rain water outdoors during storms, follow each of these tips:
Tip: Clean All of the Interior Surfaces with Bleach Before Moving in Your Stuff
Before you move any of your stuff into your new garage, first you need to ensure that all of the past mold growth has been killed and that there are no longer any spores present. To accomplish this, clean off all of the garage's interior surfaces using a solution of bleach and water. The easiest way to do this in an empty garage is to mix a bucket of solution and then use a mop or broom to scrub the floors and walls.
Tip: Inspect the Roof for Loose Flashing or Missing Shingles
Since a leaky roof is one of the most common reasons for a detached garage to have issues with mold and mildew, you should get on top of your garage's roof and inspect it. When you are inspecting the roof for damage, look for any missing or deformed shingles and check to ensure that all of the metal flashing is securely attached to the roof. If you find any roof problems, then you should have a professional roofing contractor come out and give you advice about fixing it.
Tip: Seal All Windows and Exterior Cracks with Caulking
Since rainwater can work its way into small cracks on the exterior of your garage, you should use a caulking gun and caulk any cracks you see. In addition, you should run a bead of caulking along all of the garage's window frames. Use an exterior-grade latex caulk for this project.
Tip: Install a Layer of Gravel Along the Garage's Foundation
Finally, it is very important that you keep storm water from getting under the foundation of your detached garage. To do this in the easiest manner possible, you should dig a trench around the garage about a foot away from the foundation. Into the trenched area, install about a half of a foot thick layer of gravel. The gravel layer will work as a drain and keep storm water from running under the foundation. Water under the foundation is a major problem because it can threaten the structural integrity of your garage and crack the foundation slab.
For more intense waterproofing, contact a company that specializes in professional waterproofing work.