Call us for more information 415-897-0088


Launching OTG


Novato, CA – Old Town Glass, Inc.

High Performance Air and Weather Sealing Products from Old Town Glass

Old Town Glass has launched to provide California with online purchasing of SIGA products. SIGA based in Ruswil, Switzerland strives for a world of zero energy loss buildings. To meet their mission SIGA provides Swiss designed and manufactured flashings and envelope products to help eliminate high energy losses in today’s construction. Leaking buildings intensify climate change. By increasing the energy efficiency of commercial and residential structures it reduces the effects of global warming.

SIGA. Your answer for creating an air and weathertight building envelope.

SIGA’s unique line of high performance products are free of toxins and resistance to aging. This provides air tight seals for buildings of all types. SIGA’s window and door flashing and envelope sealing products are excellent installation accessories to complement high performance window and door systems. Our installers have been trained at the factory in Switzerland. Frequently Wigluv and Fentrim are used during our own installations for both domestic and European fenestration products.

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SIGA Fentrim is available in multiple sizes based on the application

The 4 major advantages of airtight buildings are

  1. Greater living comfort
  2. Save money, protect the climate
  3. Preserve value
  4. Active house feasible

Please visit to purchase the full line of SIGA products. In addition to SIGA we also offer additional installation accessories to assist you with high performance window and door installs.

We offer our products for purchase online with local pickup and shipping through California. Please contact us for large quantity pricing and technical questions.

Old Town Glass offering innovative windows and doors systems for residential and commercial projects. Whether you are a homeowner, architect, builder, or contractor, you can rely on us to supply and install the fenestration products that you need.

CA License 736844

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SIGA MAjvest 500 Self Adhered Membrane

Official SIGA Supplier in California from OTGSupply and Old Town Glass

About SIGA based in Ruswil, Switzerland

About Old Town Glass based in Novato, California


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