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Residential & Commercial Glazing Contractor, Window & Door Product Experts, CSLB #736844

700 Grant Ave, Novato, CA 94945  phone: 415-897-0088

 phone: 707-559-7047


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Install and Repair   Which Window Flashing   Prosoco Fast Flash System   WR Grace Flashing 

Flashing Products, For Proper Installation of Windows and Doors

We stock the same products our installation crews use in window and door installations.  These products work in a majority of installation scenarios when used following manufacturer's installation instructions.  In addition to the products listed below we utilize a lot of custom stainless steel and aluminum pans along with custom waterproofing from subcontractors.  Each installation in unique and requires a system to meet it’s specific needs.  Please give our office a call with any questions.  If you are an architect or contractor and need installation assistance for the products you are purchasing from us, please contact Johnny.  We will schedule a job site meeting to discuss the installation / waterproofing specific to your particular project.

Question: Which Flashing Do I Use? Which Sealant is Okay?

In Stock, Grace Pro Butyl Window and Door Flashing & Compatible Sealants

W. R. Grace Pro (Butyl - Non Asphalt Based) 4” x 75’ Rolls

W. R. Grace Pro (Butyl - Non Asphalt Based) 6” x 75’ Rolls

W. R. Grace Pro (Butyl - Non Asphalt Based) 9” x 75’ Rolls

W. R. Grace Pro (Butyl - Non Asphalt Based) 12” x 75’ Rolls


In Stock, FortiFiber Flashing ProductsIMG_0208 & Moistop Sealant

FortiFlash (Asphalt Based) 12” x 75’ Rolls

FortiFlash (Asphalt Based) 9” x 75’ Rolls

FortiFlash Butyl (Non Asphalt) 12” x 75”

FortiFlash Butyl (Non Asphalt) 9” x 75”

FortiFlash Butyl (Non Asphalt) 6” x 75”

Moistop E-Z Seal Flashing (Assorted Width)

All others FortiFlash Products, Building Papers, and Flashings are available on a special order, typically 24 hours with no shipping charges.







Prosoco R-Guard Fast Flash (Wet Flash) System by BEI

R-Guard Fast Flash, 20 ounce sausages,   $ XX.XX Each

R-Guard Fast Flash, Joint and Seam Filler, 20 ounce sausages,   $ XX.XX Each

R-Guard Air Dam, Sealant for Window/Door Installation, 10 ounce cartridges,   $ XX.XX Each

All other Fast Flash Products are available on a 24 hour lead time,   $ XX.XX Each


In Stock, Jambsill Sill Pans

4 9/16” Pans For 6 Foot & 8 Foot Openings

3 1/4” Pans for 6 Foot and 8 Foot Openings


In Stock, Grace Vycor Plus Flashing


Custom Aluminum Pans, Typically take 3 to 4 days



Each of these flashing products are available for job site delivery with your order.

Just let us know if you would like us to include them.


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Serving Marin, Sonoma, Napa, San Francisco From Our Showroom in Novato.  Glass, Windows, Doors, Mirrors, Showers, Screens and More.
Featuring window and door products from Marvin Windows and Doors, Andersen Windows and Doors, Fleetwood Windows and Doors, All Weather Windows, Milgard Windows and Doors, Essence Wood Windows by Milgard. 
Old Town Glass, Inc., 700 Grant Avenue, Novato, CA 94945, CA License# 736844,
EPA Lead Safe Firm Certificate #NAT-24540-1
Phone: 415-897-0088, Fax: 415-897-0099, Email: