Protect your home from the elements with Polyguard Blue Barrier Liquid Flashing (BBLF), an all-purpose, fluid-applied flashing that creates a seamless, weather-resistant waterproof barrier around window and door installations. With its exceptional adhesion, superior shore hardness, and permeable membrane, Blue Barrier Liquid Flashing is the perfect solution for keeping your home dry and safe. Easy to apply with a trowel or gun, Blue Barrier Liquid Flashing cures quickly and can be applied in wet or dry conditions. It is also solvent-free, isocyanate-free, and low-VOC, making it an environmentally friendly choice for your home. Material: Plastic.