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PRAIRIE stone units do not require a field sealer. All units are manufactured with an integral water repellent DRY-BLOCK by Grace Construction Products. This product is throughout the unit and performs for the life of the units. DRY-BLOCK Mortar Additive should be used in the mortar to add to the overall performance of the water-repellent wall. A topical sealer will add an added layer of protection to the building as well as help keep the walls clean. There are many products on the market that may be applied to the PRAIRIE stone units. Some approved sealers are: PROSOCO - Weather Seal Siloxane, Chemprobe Coating Systems - Prime-A-Pell, TK Products - TK-290 WB and Diedrich Technologies Inc. - Diedrich 300-C.
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