RCD #6 Mastic (11 oz)
Estimated Product Savings Per Year Lifetime
Dollars Saved $64.64 $969.63
Kilowatt Hours Saved 548 8,217
Gallons of Water Saved 0 0
Trees Planted 0 4

RCD #6 Mastic (11 oz)

Sealing heating/cooling ducts dramatically improves the efficiency of heating distribution systems. Unsealed ducts typically leak about 10-15% of conditioned air. Leaky ducts can pull unwanted air into the conditioned parts of your house and create pressure differentials within the house, increasing air infiltration and exfiltration problems. Mastic is a fibrous adhesive sealant used for coating of thermal insulation on pipes and ducts, and for sealing of un-insulated ducts. Use with a caulk gun. Non-toxic, non-flammable and dries to the touch in 30 minutes.


The savings for this bundle of products consists on the total savings for each individual product. To learn more about how savings are calculated click the 'learn more' link on each product.

A savings estimate is not available for this product. While this product may help you save money and natural resources, determining the savings estimate is difficult due to the nature of the product. Several reasons include:

  • This product works in conjunction with other products to reduce and save.
  • This product teaches you how to reduce and save.
  • This product is used to monitor your energy and/or natural resource consumption.
  • The individual usage of this product varies greatly.
  • This product does not reduce energy and/or natural resource consumption.