Sealants & Insulation That Keep the Elements Out
At MastCo Metals, we know a great metal building is only as strong as its weakest seal. That’s why we carry a complete lineup of reliable sealants, closures, and insulation products designed to keep out wind, water, dust, and heat loss.
Whether you're roofing a shop or insulating a pole barn, we’ve got the materials that make your structure tighter, quieter, and more efficient.
Pro-Grade Barriers and Tape — Stocked and Ready
We only carry sealing products that are proven to work on real job sites. From flexible butyl tape to dependable closure foam and vapor barriers like ThermaGuard, these products are trusted by contractors who need lasting results.
Top Products in Stock:
Ridge vent
Emseal® expanding foam
Inside & outside foam closures
Butyl tape (for sealing laps and trims)
ThermaGuard insulation rolls
Double bubble insulation
Need help choosing the right combination for your project? We’re here to help.
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