SOPREMA’S ALSAN Flashing Kit provides you with everything you need to make fast, permanent repairs and flashings. Designed with efficiency in mind, each kit comes complete with materials and tools conveniently packaged to maximize your use of time. ALSAN Flashing conforms easily to irregular shapes and its unique formulation makes it perfect for creating quick curing, seamless flashings. As a building owner, ALSAN Flashing provides you with an extremely efficient, cost effective option for quickly making repairs. The easy to follow installation instructions save valuable time when a repair is needed.


Remove all loose materials, and ensure that the patch area is
clean and dry. Apply ALSAN Flashing liberally with a brush or putty knife at a rate of two gallons per 100ft2 (32 mils). Measure and cut strips of ALSAN Polyfleece and place on top of first coat of ALSAN. Completely saturate and cover reinforcing material with a second coat at a rate of two gallons per 100ft2 (32 mils). ALSAN Flashing will cure to a dark brown appearance. To match surrounding granule surfacing, a third coat of ALSAN Flashing may be applied and loose granules broadcast into the wet resin.


Testing & Approvals

Our Other Brands

Related Products


SOPRA-ISO HD is a high density rigid polyisocyanurate panel designed for use as a cover board in approved multi-ply membrane…

View Product


Polyfleece is a proprietary non-woven polyester refinforcement used in the following waterproofing and flashings: ALSAN Flashing, ALSAN Coating AC 401,…

View Product


COLPHENE LM BARR Spray is a single component, 95% solids content, liquid applied, moisture curing elastomeric waterproofing membrane. COLPHENE LM…

View Product

Related Projects

Fourth Avenue Junior High School – Yuma, Arizona

The building that the Fourth Avenue Junior High resides in was built in 1920 and was named a National Historic Landmark in 1982. When the building required a re-cover roof project, its National Historic Landmark status and student safety was top priority. Due to its history and age, care needed to be taken when completing the project. The products installed were required to be odor-less and could not damage the building. A second requirement for the project was that it be completed quickly and without lingering odors, because they planned to complete the installation over their holiday break. This is where SOPREMA products came into play.

Fishers Island Club – Fishers Island, New York

When it was time to build a new building at the club, SOPREMA products were called into action. On this new building, our COLPHENE® 3000 product was chosen to waterproof the foundation because of its superior strength and adhesion.