The lesser the amount of unwanted water coming into the building, the better for its structural integrity and longevity. But thanks to natural forces like gravity, wind pressure, capillary action, and the like, it can be difficult to prevent water from coming into the building. Foul weather can bring in huge quantities of rain water to the facility. So does ground water seepage.
Exterior commercial waterproofing prevents water intrusion from climate changes and other external elements. The techniques used to create an exterior commercial waterproofing system can be varied. Some of these techniques are listed below:
1. Roof overhangs to keep the rain off building entry ways
2. Drip edges to halt water entry
3. Flashings to redirect water outward the building
4. Roof gutters, and
5. Drainage planes.
Another concern in exterior commercial waterproofing is water entering in the form of vapor. Condensed moisture can leak through cracks in the barrier system. If these cracks are not properly sealed, the air current carries water vapor throughout every available space and stay there. The use of air flow retarders as part of the exterior commercial waterproofing system is essential.
A drainage plane is of particular importance in exterior commercial waterproofing. Together with exterior wall cladding, a drainage plane prevents water entry by creating a vented space that channels water outward. The drainage plane must be continuous even in intersections in roofs, walls, doors or windows, to prevent water from entering on cracks along the intersections.