Window, Door & Siding Sealant


  • Superior Durability
  • Permanently Flexible
  • Indoor / Outdoor Capabilities
  • Easy Water Clean-Up


  • 10 fl oz (295 ml)


  • White  (IDH1256934)
  • Clear (IDH 1256965)

Clean Up

  • Soap and Water

Recommended For

H2U is developed primarily for sealing around exterior window and door frames, sill plates, electrical and plumbing penetrations and other areas where water and air can inflitrate.  Ideal for sealing gaps and cracks found on the interior of the home.  Works well along baseboards, floors, wall-to-floor joints, around window and door frames, ceiling to wall joints and any other crack or gaps found in and around a home.  Works well on vinyl, aluminum and fiber cement siding, brick, concrete, metal, all types of wood, drywall, plaster, plastic moldings, tile and most common building materials.

For Best Results

Not recommended for the following applications:  underwater or permanent water immersion; applications requiring temperature resistance greater than 170F (77C); exterior use when rain or freezing conditions are expected within 24 hours; butt joint applications; unfinished or unprimed fiber cement; mirrors. 


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