Gundlach GC36 Calcium Blocker Reduce Calcium Build Up

        Gundlach GC36 Calcium Blocker Reduce Calcium Build Up

        Gundlach GC36 Calcium Blocker reduces calcium build up in your shower and other household surfaces. Inhibit efflorescence with this multi-surface protectant. Available in a ready-to-use 32 oz spray.

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        • $57.99
        • 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. 

        Prevent Calcium Deposits - Surface Protection

        Prevent calcium deposits and buildup with Gundlach Calcium Blocker. Using surface protection like calcium blocker will protect surfaces, keeping them looking new longer. Use Gundlach Calcium Blocker to prevent calcium deposits is an environmentally safe protectant. This surface protection is easily applied and even safe for use with aquariums and swimming pools. 

        Prevent calcium deposits, hard water spots and even reduce efflorescence before they have an opportunity to happen. You can use this surface protection on a variety of surfaces such as glass shower doors, shower surrounds, grout, metal and even pavers.

        Directions to Prevent Calcium Deposits

        • Apply surface protection with a brush or sprayer
        • Allow to dry thoroughly
        • Apply a second coat for best results
        • Blot up any excess with a dry white cloth
        • Once calcium blocker is completely dry it's ready to use
        • Maintain surface with Gundlach pH Neutral Cleaner and scrub or brush as needed
        • Scrub or brush to keep calcium from building up

        Coverage: This calcium blocker to prevent calcium deposits will cover approximately 75 sq. ft per quart depending upon porosity of the surface to be cleaned. Do Not dilute. Gundlach GC36 is a ready-to-use spray.

        Uses for Calcium Blocker Surface Protection:

        • Prevent calcium deposits on sinks and bath tubs
        • Glass and metal tiles
        • Grout lines
        • Safe for use in aquariums and water features
        • Stone and tile pavers

        Check out the entire line of surface protection Gundlach products. Prevent calcium deposits and save yourself cleaning time. Place your order today with a click or call!

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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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