Underseal® Inside Corner Boot

The Underseal® Inside Corner Boot is is a 60-mil combination of rubberized asphalt bonded to polyethylene. The adhesive surface is covered with release liner which will be removed prior to application.  It is applied in the inside corner to reinforce and seal the corners of the Underseal® Underslab membrane. Underseal® Inside Corner Boots are designed for use on all inside corners.

Boots are 12″x 12″x 12″ and come 25 to a carton.


  • Preformed corner boot conforms to the film side of the Underslab membrane to seal any possible pinhole condition
  • Applied in the inside corner to reinforce and seal corners
  • Release liner for ease of application
  • Saves Time & Labor on the job site

Companion Products

(Where Applicable)
Underseal® Underslab Membrane 85-mil pre-concrete pour waterproofing membrane/vapor barrier that provides a continuous seal.

Product Resources

Data Sheet (PDF)Download 
SDS (PDF)Download 

Product Submittals

For a job-specific submittal package, please contact Polyguard for Product Submittal Requests. Click here to find your area’s field representative.