Jason Patrick
Co-founder / InstallationOwner of a high-end window and door installation company in Monterey, working with Northern California architects and custom home builders.
Window & door waterproofing systems
Big openings.
Every detail
considered.
A dedicated fastening surface above the waterproofing pan. Precision-engineered for large-format windows and scenic doors.
Explore the sub sill Made in the USA Patent pending
An integral part of the opening
Performance starts
at the threshold.
Large openings demand secure attachment. Fastening through the bottom track can penetrate the primary waterproofing layer, creating a potential point of failure.
The J&S sub sill provides a fastening surface above that layer, preserving the pan beneath.
See the assemblyThe detail, up close
Part of the opening.
Every step of the way.
A closer look at the J&S sub sill, assembled in the shop, from fastening the sections to seating the track.
Inside the assembly
A small component.
A considered connection.
Explore how the layers work together.
The primary waterproofing pan stays intact.
Highlight a layerIllustrative, not to scale.
Complete assembly
The track fastens into the sub sill, above the primary waterproofing pan.
Choose a layer to highlight it in the diagram.Designed down to the detail
Precision you
can look into.
Aluminum sub sill sections. End caps. An adjustable shim kit. The components that bring the fastening detail together.
- Material
- Precision-engineered aluminum
- Section
- 6 inches, with end caps
- Shim kit
- 4 adjustable shims per section
- Application
- Large-format windows & scenic doors
Hover over the image to inspect the details.
Independently evaluated
One component.
Measurable performance.
Evaluated by an accredited testing laboratory as part of a complete window installation assembly. Adding the J&S component doubled the tested Design Pressure performance in that assembly.
Testing results are based on the specific assemblies evaluated. Performance may vary depending on the complete system configuration.
Talk through the testingDP-15
Before
DP-30
With the J&S sub sill
Tested design pressure / specific assembly
From the shop to the jobsite
Made for the people
behind the opening.
Architects
Support high-performance building envelope design with a considered waterproofing detail.
Window & door manufacturers
Explore integration into approved installation instructions and engineered assemblies.
Certified installers
Bring confidence to installations where waterproofing integrity and structural attachment are equally critical.
Built on experience
Built on decades
of practical experience.
Founded in 2026 by Jason Patrick and Steve Stanton, J&S brings together more than 60 years of combined experience in the fenestration industry.
Steve Stanton
Co-founder / FabricationOwner of Stanton Mechanical, designing and fabricating custom stainless steel pans for complex window and door installations.
“Our goal is to integrate our engineered sub sill into complete window and door systems through manufacturer partnerships and architectural specifications, creating consistent, repeatable installations that perform as intended.”
Installed openings
The opening,
brought together.
Installed glazing and threshold details, photographed during construction.
Hover over a photo to pause. Move away to resume.Swipe to explore.
Start a conversation
Let’s look at
your next opening.
Discuss the J&S sub sill for your specification, engineered assembly, or installation.