Encyclopedia & FAQ's

DIY Frequently Asked Questions / Butyl Rubber Sealants

  • DIY Frequently Asked Questions / Butyl Rubber Sealants')"> Are solvent-based, with a life expectancy of two to 10 years.
  • Butyl rubber is good for sealing out water in lap joints, such as gutters. It is also a good choice for metals and masonry, as well as outside for chimneys.
  • Probably the best waterproofing sealant for below-grade applications, such as foundations.
  • Stringy, difficult to apply and slow curing, they are most efficient when applied to openings between similar surfaces.
  • Not recommended for openings wider or deeper than 1/4″ or in 90° corners.
  • These sealants offer low to moderate movement capabilities.