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STI® Firestop Products at GTS Interior Supply

For construction customers in AK, ID, MT, OR, and WA

Pacific Northwest builders and contractors know quality when they see it. Because safety matters, local construction professionals choose STI® firestop solutions for their building projects in Alaska, Idaho, Montana, Oregon, and Washington.

GTS Interior Supply is committed to helping customers maximize safety and snuff out challenges with the quality construction supplies we provide. STI firestop products are available* from GTS at our construction yards or can be delivered directly to your commercial or residential jobsites.

Visit a showroom to learn more.

*Inventory varies by location. Call your local yard to confirm specific product availability. If we do not have it in stock at your local yard, we will be glad to order it for you.

Top Firestop Solutions for Pacific Northwest Construction

GTS Interior Supply carries a wide variety of STI firestopping products for building pros in Alaska, Idaho, Montana, Oregon, and Washington, including:

  • STI SpecSeal® SSP putty pads
  • STI SpecSeal® ES elastomeric firestop sealant
  • STI SpecSeal® LC endothermic firestop sealant
  • STI SpecSeal® LCI firestop sealant
  • STI SpecSeal® LCC intumescent firestop collar
  • STI BlazeStop® WF300 intumescent firestop caulk
  • STI SpecSeal® Smoke 'N' Sound acoustical sealant
  • STI SpecSeal® Smoke 'N' Sound spray

Buy STI Firestop at GTS Interior Supply in AK, ID, MT, OR, and WA

Pacific Northwest construction pros, search our inventory now to learn more about STI firestop products from GTS Interior Supply.

Use your online account to request a quote or make a purchase now. Don’t have an online account yet? Our Customer Portal can help you work smarter and faster. Talk to your salesperson or contact us at your local yard. We are always here to help!

About GTS Interior Supply

From our yards in Alaska (Anchorage), Idaho (Boise, Idaho Falls, Rathdrum), Montana (Billings, Missoula), Oregon (Bend, Eugene, Hillsboro, Medford, Portland, Salem, Wilsonville), and Washington (Bellingham, Everett, Kent, Kirkland, Poulsbo, Tacoma/Puyallup, Richland, Seattle, Spokane Valley, Tumwater, Vancouver), GTS Interior Supply proudly serves residential and commercial construction customers across America’s Pacific Northwest. As part of the GMS family of companies, GTS has offered exceptional construction products and building materials, from drywall and steel to insulation, acoustical tiles, and more, for decades.

About Specified Technologies Inc. (STI)

Specified Technologies Inc. leads the firestop industry in developing innovative fire protection systems to help stop the spread of fire, smoke, and hot gases. For 30 years, the STI team has collaborated with the construction industry to create simple, effective solutions to complex firestopping problems for all types of new construction and retrofit applications.