Advantages

• Universal horizontal applicationsuitable for all overburdens including concrete
• Damage and creep-resistanthigh compressive strength core resists traffic loads and site damage to maintain drainage flow
• High flow capacitydrains 17 gal/min./ft (211 L/min./m) width
• Enhances waterproofingeliminates hydrostatic head build up
• Securely bonded fabricrestricts intrusion into core
• Polymeric backing filmcompatible with both sheet and liquid waterproofing membranes
• Lightweighteasy to install without special equipment
• Simple, convenient, drainage and protection layerrobust membrane protection

Use

Hydroduct 660 Drainage Composite is designed to collect and transport water to drainage outlets. It can be used on all horizontal applications regardless of the type of overburden and serves as a combination drainage and protection course for all Grace waterproofing membranes. The high strength, nonwoven geotextile is designed to maintain pemittivity while protecting the drainage composite from job site damage prior to, and during, the installation of the overburden. The high permittivity of the nonwoven geotextile facilitates the removal of water from a concrete

Application Procedures:

Safety, Storage and Handling Information
All construction products must be handled properly. Material Safety Data Sheets (MSDS) are available at graceconstruction.com and users should acquaint themselves with this information. Carefully read detailed precaution statements on product labels and the MSDS before use.

Installation
Hydroduct 660 can be placed over waterproofing membranes, concrete or wood providing job site conditions allow the composite to remain as placed. Additional ballast consideration should be given in high wind exposures. Abut all edges tightly with the excess geotextile placed over the adjacent roll in shingle fashion. To secure Hydroduct 660 around protrusions, apply Preprufe® Detail Tape around the protrusion in a picture frame configuration. Cut Hydroduct 660 to fit snugly around the protrusion. Press Hydroduct 660 core firmly into the Preprufe Detail Tape. Hydroduct 660 should be covered promptly. Do not leave Hydroduct 660 exposed to sunlight for more than two weeks. Motor vehicles, construction equipment or other trades should not be allowed directly on the Hydroduct 660.

Supply