Water damage is probably one of the most common reasons for issues with homes. The problem is that water can make it in almost anywhere, and there is a wide range of issues that it can cause, from rot to mold. This is why there are many features to a home specifically designed to keep water out of your home. One such thing is a vapor barrier. A vapor barrier could consist of a polyethylene sheet, paper, or even paint. If installed correctly, these can keep water outside where it belongs. For the barrier to work properly, however, there can’t be any gaps in the coverage. This means that you need to make sure that the paint is applied evenly with no patches missed. If it is in the form of sheets of paper or plastic, you need to be careful not to rip the sheets when installing them. Otherwise, they won’t serve their purpose. If you are installing a polyethylene sheet and the surface is very sharp and uneven, it might be worth investing in a higher quality thicker sheet which won’t rip as easily.