Advanced Sealant Systems for American Homes
Engineered for the extremes to protect your property.
From California’s atmospheric rivers to California Coast hurricanes, Envelope Guard delivers high-performance sealant systems that stop moisture, block air leaks, and prevent structural damage before it starts.
Designed For U.S. Conditions
Across the U.S., builders are dealing with more extreme and less predictable weather than ever before. Heavy rain, high winds, rapid temperature swings, and prolonged exposure to moisture are putting constant pressure on the building envelope.
Envelope Guard is engineered to handle these conditions at every stage of the build, helping prevent water intrusion, air leakage, and long-term structural damage.
High winds and driving rain that push water into weak points
Constant moisture and humidity that lead to mold and rot
Rapid temperature swings that cause cracking and seal failure
Freeze-thaw cycles that break down adhesion over time
Storm pressure changes that test every sealed connection
The result is a continuous, durable seal that holds under real-world conditions, before problems start.
Our Products
EnvelopeGuard Green
Environmentally Friendly, Low VOC product.
EnvelopeGuard Blue
Extreme Weather and Cold Weather protection, Solvent Based product.
Sill Trough Membrane
Waterproof Membrane on the Bottom Seal of the Window.
Our Sealant Applications
Window Openings
Door Openings
Roof Flashing
New Construction
The Standard in Envelope Resilience
At Envelope Guard, we’re focused on one thing: helping builders get the building envelope right from the start. We work closely with builders and distributors across the United States to deliver sealant systems that perform in real conditions, not just in specs.
Our approach is built around real jobsite challenges, with a focus on long-term performance and reducing risk over the life of the build. It’s why builders rely on us to help prevent callbacks and protect what they put their name on.
Learn more about how we work and what drives our approach.
Tested to Perform Across Building Seams and Openings
Envelope Guard is a next-generation elastomeric copolymer sealant engineered for airtight and watertight performance across building envelope joints, seams, and penetrations.
Bonds to wood, concrete, masonry, metal, and vinyl substrates
Maintains flexibility through structural movement and thermal cycling
Performs in both high-heat and sub-freezing job site conditions
Supports improved blower-door results and overall energy efficiency
Proven to strengthen the building envelope where it matters most at transitions, penetrations and openings.
Why Choose EnvelopeGuard for Sealant Solutions
Specialists in Sealant Systems
We focus on sealing windows, control joints, and penetrations in the most failure-prone areas of the building envelope so performance stays consistent where it counts.
Engineered for U.S. Codes
Our systems are designed to meet AAMA and ASTM standards, helping ensure your projects pass inspection and perform as intended over time.
Built for Code-Driven Performance
We support key building requirements for air barriers, water-resistive barriers, and energy efficiency, so your builds meet modern performance expectations.
Climate-Tested Performance
Our sealants are engineered to handle high winds, heavy rain, and rapid pressure changes, helping maintain a strong seal in real-world conditions.
Protect the Building Envelope Before Problems Start
Stop water intrusion, air leaks, and long-term damage at the source with sealant systems built for real conditions.