Product Application

Flexible Seal Cartridge Grade & Brush Grade is for exterior use.  Our Product will adhere to most roofing materials and a wide range of common adjacent building material surfaces used in the roofing/construction industry.  It's always a good idea to test for compatibility prior to application for best results.  Flexible Seal is not for use on underwater applications, aquariums or EPDM Rubber Underlayment Membrane Systems.  Before making repairs on RV's, motor homes, or elevated roof decks, check with your manufacturer for warranty & compatibility where a Rubber Membrane System has been used.
For best results, apply Flexible Seal to a sound clean dry surface.  Flexible Seal may be applied on either a dry area or a damp surface.  The most common mistake is not applying enough product to give a good film build, thus allowing it to displace water.
Joint Depth: Not exceed 1/4"
Joint Width: Not exceed 1/4"
Cartridge Coverage: Approximately 1/4" bead - 31 linear feet
Brush Grade: Flexible Seal Brush Grade* is thinner than our Cartridge Grade Material making for easy brushing & application.  Coverage approximately 50 sq ft. per gallon.  Its recommended for brush or roller application, that an inexpensive "throw away" brush or roller be used as they will not be able to be cleaned or used again
*See additional information on the Flexible Seal Brush Grade Page
The use of backer rod (use closed cell backer rod) is recommended when the joint width & depth are greater than 1/4".  The use of backer rod will give more flexibility on larger joints and will ensure better adhesion.  The joint should be clean and free of dust & debris.  Insert the correct size of backer rod into the joint and the backer rod should be snug.  Apply Flexible Seal over the backer rod ensuring enough material is used to give a good seal.
Tooling & Smoothing: Use paint thinner, MEK or or a solution of soapy water made with liquid dish washing detergent. When using any solvent material use caution and keep away from heat, sparks, or open flame and use only in well ventilated areas.  For tooling with liquid dish washing detergent put 5 drops in a glass of water & stir.  Using the soapy solution the the tip of your finger, with a light touch, smooth or shape the Flexible Seal into any shape or profile desired.
Painting over Flexible Seal with latex paints after 24-48 hours, depending on weather/humidity.  Oil base paint may be applied after 1 week depending on temperature & humidity.
Cure Time: Approximately 1 week
Clean up: The use of citrus based hand cleaners, MEK or paint thinner.