Nothing listed right now
What shows up in sealants & adhesives
- Structural silicone for four-sided and two-sided SSG work
- Weatherseal silicones and polyurethanes in project colors
- Butyl tape, shim tape, and glazing tapes
- Glazing compounds and back-bedding materials
- Primers, cleaners, and adhesion promoters
Before you buy
Surplus is only a bargain if it fits and it's documented. These are the questions worth asking on this category specifically.
- Check the lot number and date code on every unit. Sealants have a stated shelf life, and past it the cure and adhesion are no longer warranted
- Ask how it was stored. Heat shortens shelf life significantly, and a case that sat in a hot trailer may be dead well before its printed date
- Structural silicone requires project-specific adhesion and compatibility testing by the manufacturer — surplus material generally has no such approval for your substrates
- Confirm the primer that goes with it; sealant and primer systems are matched, and substituting breaks the warranty
- Verify color against a cured sample, not the cap — silicone shifts as it cures
- Check that cartridges and sausages are unopened and uncured; a partially skinned unit is scrap
Common questions
Can I use surplus structural silicone on a curtain wall job?
Be very careful. Structural glazing silicone is approved for a project after the manufacturer reviews and tests adhesion and compatibility against your actual substrates. Surplus material carries no such approval, and most manufacturers will not warrant it. For non-structural weatherseal within its shelf life, surplus is far less fraught.
How long does glazing sealant last in storage?
It varies by product, but many silicones state somewhere around twelve to eighteen months from manufacture when stored cool and dry, and polyurethanes are often shorter. The printed date assumes proper storage — heat exposure can shorten it dramatically, so ask where it has been sitting.