Price: $15.69
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    Can withstand rain immediately after application!

    Henry Company's Air-Bloc® LF is a moisture-curing one component elastomeric fluid applied flashing membrane using a highly advanced STPe (Silyl-Terminated Polyether) polymer. It is designed to cure through reaction with airborne moisture to provide a heavy-duty “seamless” rubber-like, impervious membrane with excellent weathering and water resistance. Air-Bloc LF is easy to apply to the substrate in a serpentine fashion using an appropriate caulking gun. Spread membrane using a trowel or joint knife to achieve a monolithic membrane. It is recommended that Air-Bloc LF be applied at a 25 mil wet film thickness.

    • Fast curing, high solids, single component
    • Low VOC, low odor
    • Excellent adhesion to prepared substrates of concrete, concrete block, primed steel, aluminum mill finish, anodized aluminum, galvanized metal, exterior grade gypsum board and plywood
    • Impermeable to air and water
    • Excellent compatibility with all Henry sheet & liquid air barrier membranes, HE925 BES Sealant and rubberized asphalt
    • Easy to install, no special equipment required
    California Proposition 65 Warning: The following warning is a requirement of DHC Supplies to post on our website in order to sell the above product into the state of California. Please view the current product SDS sheet(s) (If Available) and visit the California Prop 65 Home Page for more information.
    Prop 65 Warning label WARNING! This product can expose you to chemical(s) which are known to the State of California to cause cancer. For more information go to
    Explanation of Product Availability Terms

    • Stock Item: This is a product we normally have available for immediate shipment. If we are out of stock or do not have enough to complete your order we will notify you by phone or email as soon as possible. If you need to know if we have it in stock before you place the order please call 800-323-2999 Monday through Friday 7:00AM - 4:30PM.

    • Ships Direct: This product ships direct from the manufacturer usually on the same or next business day.

    • Special Order: This product has to be special ordered into our store and then shipped to the customer. This can take form 1-6 working days depending on the item and manufacturer.

    • Out of Stock: This product is out of stock and will be replaced in the future.  Depending on the vendor we can sometimes have a product that is out of stock drop shipped direct to you. Please call 800-323-2999 if you have any questions.

    • Discontinued: These are products we are no longer stocking.  However they may be available as a special order.  Please call 800-323-2999 if you have any questions.

    Please Note:  If we can drop ship an order and save shipping charges we will notify you and then pass the savings on to you.

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