Improperly installed or repaired drywall jobs do not stand the test of time. In humid climates, moisture can enter through poorly constructed and finished drywall joints, leading to softening and the build-up of mold, creating unsafe conditions for you and your family. Poor-quality drywall jobs are easy to identify through uneven joints, hills and valleys, gaps and visible screw or nail heads. However, when properly installed, finished or fixed, drywall is safe and provides excellent insulation, sound deadening and fire resistance.