Providing Unparalleled Reliability to the contracting trades for over 40 years.
FSI is the leading supplier of accessories for specialty commercial buildings. Electric vehicle buildings, cold storage buildings, and Industrial Metal Panel (Cladding Panels) buildings.
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Ceiling Tee
Self Drilling Hex Washer Head Tek 3
FSI-96 BUTYL CAULK
FROTH-PAK
FSI METAL PANEL SEALANT
Vapor Guard Tape
FastSeal
FSI-CEF INSULATING SPRAY FOAM
Discover the FSI Difference
See how FSI is redefining quality and reliability in the construction fasteners industry. Our corporate overview video showcases our people, products, and commitment to excellence—from precision manufacturing to nationwide distribution.
We Stock Over 73 Million Parts for Immediate Shipment
Fasteners
Caulks & Sealants
Spray Foams
Ceiling Tees & Suspension
HDPE Lumber
Tapes
Fiberglass Reinforced Panels
Insulation
Anchors
With the most comprehensive and informative reference guides.
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Hybrid materials are engineered for high-stress building conditions where ordinary sealants often fail. They provide flexible adhesion across a range of dissimilar surfaces in both interior and exterior environments.
Pan head self tapping screws are built for reliable metal-to-metal connections. They come in a range of materials, drill point styles, and diameters to match specific fastening requirements. Used in sheet metal, enclosures, and HVAC assemblies, the pan head design distributes load evenly and enhances drive engagement.
If the R-value per inch is off, the assembly won’t meet code—or hold temperature. Precision matters on every spray foam job. The spray foam insulation r value depends on product type, application method, and jobsite conditions.
