Sheet Applied Waterproofing

Waterproofing with Sheet Applied Membranes

Waterproofing various structures such as foundations, plazas, and other below grade structures is of great importance to builders.  Foundations form the backbone of every building, and plazas often have pedestrian traffic above as well as occupied space below.  Damage caused by moisture in these areas can be expensive to repair or may not be easy to access.  One option that has been developed to counter these issues is the use of a sheet applied waterproofing membrane.

Applying waterproofing in sheets has some advantages and disadvantages.  Advantages include product consistency.  The builder also does not have to think about how thick the material should be because the sheets will all have similar thicknesses.  However, lapping is something that should be considered with this waterproofing method.  The top sheet should overlap the bottom sheet in order for water to drip off appropriately.

Several types of sheet waterproofing exist, including vulcanized rubber and rubberized asphalts.  They are usually designed to be placed on the positive side of the structure where it will help to prevent water from penetrating into the building’s structure.  It is important that this, as with all waterproofing options, is applied according to the manufacturer’s instructions in order to ensure proper functioning.