Seals vs. Sealants

August 28, 2018

Internal Chimney Sealing is a good practice to prevent infiltration entering your structures through the chimney section. However, if you are using mechanical seals, you may have noticed that they are hard to install and require a lot of preparation. Special equipment such as spanner tools are needed to ensure a tight fit inside the chimney and a lot of times they end up in the bottom of the manhole as shown in the pictures. Instead of mechanical seals, consider the use of chimney sealants such as Flex Seal Utility Sealant. Flex Seal is an aromatic urethane sealant with over 800% elongation and responds to severe freeze/thaw cycles, H2S and road salts with no tearing, cracking or deterioration. More information Flex Seal can by found by visiting Midwest Water Group's Manhole Rehab page




Please reload

Featured Posts

You thought YOUR structure was bad...

March 30, 2019

Please reload

Recent Posts

April 19, 2019

August 28, 2018

Please reload

Please reload

Search By Tags
Please reload

Follow Us
  • Facebook Basic Square
  • Twitter Basic Square
  • Google+ Basic Square


Fax: 866-526-6559

72 East Street

Crystal Lake, IL 60014

  • Facebook

©2020 by Duke's