SIGA
Air- and weather-sealing membranes, tapes, and flashing systems for durable high-performance envelopes.
What they're known for
A control-layer specialist focused on the joints, window openings, penetrations, and transitions where otherwise good enclosure designs usually fail.
SIGA manufactures membranes, tapes, and connection products for airtight and weathertight building envelopes. Its U.S. catalog includes exterior weather-resistive membranes such as Majvest, outdoor tapes such as Wigluv, and dedicated window and penetration products for maintaining continuity across difficult transitions. The company also provides jobsite training and high-performance-building workshops, reflecting how dependent these products are on correct sequencing and installation rather than material choice alone.
Performance focus
- Thermal Comfort
- Indoor Air
Notable products
We haven't catalogued their full line in the directory yet. These are the entries worth knowing.
- Catalog entry
Majvest 500 SA
Self-adhered vapor-permeable exterior membrane for direct bonding to substrates
- Catalog entry
Wigluv
Diffusible rainproof exterior tape for windtight membrane and panel connections
- Catalog entry
Fentrim
Window and door connection tapes for air- and weather-sealing transitions
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Sources
Facts verified September 2026. Compound is an independent editorial directory and is not affiliated with this company unless stated.