Gappsi Inc provides professional cleaning and sealing services in Suffolk and Nassau County, Long Island, NY. With our state of the art equipment and top of the line products, we clean patios, walkways, walls, and driveways without damaging the pavers. Our power washer consists of 180 degrees of low pressure steam. Our polymeric sand is

Granite pavers Supplier & installers for Massapequa, NY Letter from customer to GAPPSI in 2010 “Initially, my husband and I wanted to only redo our front stairs. We had several contractors give us quotes, but no one could design what we were visualizing. Giuseppe at Gappsi changed all that. He worked over all the problem areas

Suffolk County 27543-H1 9-10-99 to present, 15435-H1 7-1-88 to 7-1-97  Nassau County H2209100000  Southampton L002384  NYC and The Five Boroughs 1321423

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