Business Details
50+ Years
experience
Your Trusted Source for Building Sealants & Tools
Colorado Steel Sash has been a trusted supplier to professional contractors in the Pacific Northwest since 1950. Specializing in waterproofing and glazing solutions, we distribute premium American-made sealants, coatings, tapes, and specialized tools for the building envelope industry. Our family-owned business takes pride in offering technical expertise, fast product availability, and unmatched customer service to contractors in Washington, Oregon, and beyond. With warehouses in Seattle and Portland operating extended weekday hours, we cater to both commercial clients and DIY enthusiasts.Our commitment to quality is reflected in our curated product selection from leading manufacturers like GE Momentive, Pecora, and Tremco. As a local business rooted in Georgetown, Seattle, we prioritize understanding regional construction challenges while maintaining nationwide reach through reliable logistics. Our team combines decades of industry experience with practical knowledge of sealant chemistry, application techniques, and building code requirements to provide tailored solutions that ensure structural integrity and longevity.
Services
Silicone Sealants
Hybrid Sealants
Urethane Sealants
Waterproofing Coatings
Foam Tapes
Butyl Sealants
Firestop Materials
Glazing Tools
Acoustic Sealants
Backer Rod
Details
- Year established: 1950
Highlights and features
- Family-owned since 1950 with industry expertise
- Nationwide delivery with local service
- Specialize in American-made building envelope products
- Custom foam tape production available in 24 hours
- Technical product knowledge from experienced staff
What people say
Excellent product knowledge
Fast delivery
Reliable stock
Technical support
Local experts
Services
Silicone Sealants
Our premium silicone sealants provide durable waterproofing solutions for building exteriors. Commercial-grade formulations resist UV degradation and weather exposure while maintaining flexibility. Contractors rely on these sealants for curtain wall systems, window perimeters, and expansion joints requiring long-term performance.
Custom Foam Tapes
We manufacture custom-sized foam tapes within 24 hours using precision slitting equipment. Available in adhesive and non-adhesive varieties, these tapes serve HVAC sealing, gasketing, and insulation applications. Our technical staff helps select proper density and adhesion levels for specific construction requirements.
Waterproofing Coatings
Air barrier and traffic coatings create watertight membranes for roofs, decks, and foundation walls. Our selection includes silicone-based coatings that resist ponding water and polyurea systems for rapid-cure applications. Expert guidance ensures proper substrate preparation and application techniques.
Glazing Tools
We supply professional-grade tools for sealant application and glazing work. Product range includes caulking guns, spatulas, backer rod installation tools, and foam tape dispensers. Tool selection focuses on ergonomic designs that improve application accuracy and reduce worker fatigue.
Firestop Materials
Our firestop sealants and putties meet ASTM E814 standards for through-penetration firestops. Intumescent materials expand when exposed to heat, maintaining fire resistance ratings in wall and floor assemblies. Technical data sheets document tested system configurations for code compliance.
People
Brad Weeks
President
Brad Weeks leads Colorado Steel Sash with over three decades of construction materials distribution experience. He oversees strategic direction while maintaining hands-on involvement in product selection and customer satisfaction initiatives.
David Nagel
Branch Manager
David Nagel manages Portland operations with 20+ years of expertise in building envelope systems. His technical knowledge supports Oregon contractors with product specification and application challenges for waterproofing solutions.
Jeremiah Easter
Sales Specialist
Jeremiah Easter provides technical sales support for sealants and coatings. With a background in chemical applications, he helps contractors select materials matching project-specific performance requirements and environmental conditions.
Questions
What types of sealants do you carry?
We stock silicone, urethane, hybrid, and butyl sealants from manufacturers like Pecora and Tremco. Product selection includes structural glazing sealants and fire-rated formulations.
Do you offer same-day shipping?
Orders placed before 4:00 PM typically ship the same day from our Seattle and Portland warehouses.
Can you help with custom foam tape sizes?
Our foam slitting service produces custom widths within 24 hours. Minimum order quantities apply for specialty cuts.
Do you serve residential customers?
While we prioritize commercial contractors, our stores welcome DIY homeowners needing professional-grade materials.
What technical support do you provide?
Our staff includes certified applicators who offer product recommendations, MSDS documents, and installation best practices.
