Sentinel 821 Moisture & Vapor Reducing Sealer/Primer

        Sentinel 821 Moisture & Vapor Reducing Sealer/Primer

        Sentinel 821 Moisture & Vapor Reducing Sealer/Primer is designed to form a moisture vapor barrier on most construction substrates. This moisture barrier product inhibits the growth of mold and mildew.

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        • $33.59
        • Shipping info

          Website will only calculate shipping for the Continental US.
          All other locations please call for shipping quote - 866-258-1554 

        • Payment methods


        • Return Policy

          We accept returns on most products that are not
          custom made and are in resellable condition. 

        Adhesive Primer - Ideal for Peel and Stick Tile Installation

        This adhesive primer acts as a vapor reducing moisture barrier inhibiting the growth of mold. For peel and stick tile installation the drier the sub-floor the better adhesion and longevity for your floor. For this adhesive primer to work the surface must be clean, dry and free of all previously used sealers. When doing a peel and stick tile installation or other floor type job in a basement it's always a good idea to use some sort of moisture barrier protection. Sentinel 821 adhesive primer is American made and sold in gallon containers. Using Sentinel 821 during interior floor, especially peel and stick tile, installation will help floors last for a long time.

        Sealer/Primer Adhesive Prep Highlights

        • An adhesive primer will improve the adhesion of your new floor
        • Made in America
        • Easy soap and water clean up while applicator is still wet
        • Greatly reduces moisture and vapor emissions
        • Sold in easy to use gallon size containers

        Sentinel Adhesive Primer Directions:

        • Prior to any peel and stick tile installation an adhesive primer is recommended
        • Make sure surface is clean of any debris and previous sealers
        • Shake product thoroughly before application
        • Roll or spray on for even application
        • Allow to dry for at least 2 hours and repeat process
        Note: Never allow Sentinel Formula 821 to freeze.

        We have more great Sentinel items for all your projects!

        Using this adhesive primer when doing peel and stick tile installation or other floor applications will ensure a better attached floor. Do yourself a favor and place an order today!

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        Shipping Policy:

        Available shipping options are shown in the table below. The Warehouse Rush option has been added due to customer demand.

        Warehouse Rush means your order will take priority in the warehouse to ship out as soon as possible. Warehouse Rush fee varies according to product(s) ordered. Shipping fees will be calculated and shown once all items have been added to the cart and your shipping method has been selected.

        Shipping TypeFeeDetails
        Standard Shipping$7.99Order will be processed
        according to when submitted
        Warehouse RushVariable CostOrder takes priority in
        warehouse to ship ASAP
        OvernightPlease contact for rates866.258.1554
        Monday - Friday
        8am-5pm CST
        Two DayPlease contact for rates
        Three Day ExpressPlease contact for rates
        Outside Contiguous USPlease contact for rates


        Standard Shipping and Warehouse Rush options will ship out ground USPS, FedEx, UPS, or Spee-Dee Delivery.

        Orders with products that ship directly from the manufacturer or have longer lead times are not eligible for Warehouse Rush. Exceptions will only have the Standard Shipping option available.

        Should any unexpected shipping delays arise and the order cannot be shipped via Warehouse Rush, you will be contacted and refunded the difference between Standard Shipping and Warehouse Rush fees.

        Please call, toll free at (866) 258-1554 or our local number at (608)-244-1226, Monday through Friday, 8am-5pm CST or email for expedited, APO/FPO, or shipments outside Continental US. Please note customers are wholly responsible for these shipping fees.

        Transit times can vary depending on destination. Orders are shipped Monday through Friday, with the exception of national holidays.

        We accept the following payment methods:

        You can also call us or mail in a check.
        Payment must be made before items ship. 

        Please contact us immediately in the event an incorrect product has been sent or an order has been damaged in shipping. We will gladly remedy the situation at no extra cost to you.

        Acquiring a Return Merchandise Authorization (RMA) Number:

        Please call 866-258-1554 or email to receive a Return Merchandise Authorization number if there is any reason you would like to return your order. All charges to ship merchandise back are the responsibility of the customer. There will be a 10% re-stock fee on all returned orders, unless a replacement order has been made. Customers are given 7 days from the delivery date to contact us for a RMA number. Returns must be received back to our warehouse within 90 days. Fees may change based on extended time passing.

        Returns of open/used products are not accepted.

        Special order items are not returnable and are designated on the specific product pages.

        Shipping charges are not refundable.

        InstallerStore strongly encourages choosing a shipping method for your return where a tracking number and insurance can be obtained. Accounts will be credited back after inspection has been made to the product to ensure product has not been damaged in any way and can be resold. Packages damaged while being shipped back to us will not be accepted as a return and customer will be contacted. InstallerStore is not responsible for lost or damaged returns. It is the customer's responsibility to file a claim with the shipping company.

        Any merchandise that is shipped back without a RMA number will have a minimum re-stocking fee of 25% of the product cost and shipping charges will not be refunded.

        All returned products must be shipped directly to InstallerStore even if they were originally shipped from the manufacturer, unless otherwise told by InstallerStore. Shipping back to manufacturer may cause re-stocking fee to increase.

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