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  1. Guidelines and Procedures

    … consensus guidelines and quality control procedures for the application of systems represented by Association members. … represent an industry consensus on the subjects of application, quality control and repair or replacement of … by the NRDCA. NRDCA 100 – Guideline for Field Application of Aggregate Insulating Concrete Roof Deck …

  2. Members

    … best represents your company. Review the Membership Application Form which includes the current annual cost. … annually on the date of your membership. Complete the application form and return it to the NRDCA address listed … NRDCA . Should you have any questions regarding your application, please contact the NRDCA office at …

  3. HOW DO YOU INCREASE THE R-VALUE OF LWIC?

    … adding expanded polystyrene insulation board during application of the LWIC. A LWIC system (LWIC plus EPS …

  4. WHAT IS AN ACCEPTABLE FINISH FOR LWIC?

    … ridges and protrusions is an acceptable finish for roofing application.