Grid System
An Exceptional “Peace of Mind” System
The Grid System offers a unique “containment grid” feature that reduces the risk of expensive removal and replacement of overburden. As the name implies, the area to be waterproofed is marked out in a grid pattern, with each section becoming its own individual containment field. This is accomplished by adhering strips of membrane around the perimeter of each grid section to act as a sub membrane waterstop. Should a leak occur in the future, the containment grid isolates the water, eliminating any potential spread from one section to another.
| Advantages |
| Durable membrane with a proven performance history |
| Grid strip eliminates the potential spread of water from one section to another |
| Test drains can be installed in each grid to provide a means to diagnostically test each section before and after installation of overburden |
| Can be installed economically over existing waterproofing with minimal deck preparation |
| Sika Sarnafil’s bright orange G476 membrane makes it easy to identify and inspect to maintain high levels of quality assurance and control during construction |
John F. Kennedy Library - Boston
The Grid System was used to waterproof the plaza area of the John F. Kennedy Library in Boston, Massachusetts. Because of the irreplaceable artifacts and documents located directly beneath it, the owners wanted absolute system integrity and maximum watertight security. For this reason, the consulting engineers specified Sika Sarnafil’s high performance Grid System.