How Polymeric Sand Is Actually Made

A factory tour at SEK Surebond's headquarters in Chicago, walking through how PolySweep, HydroSweep, and the SB 1300 sealer are actually made — and why "just damn good sand" isn't a slogan, it's a process. Dan and Greg walk from the bulk sand bins outside the facility through the dryer, the sieve machines, the mixing process, and the nitrogen-sealed packaging line, showing exactly where the quality controls live and why consistency in the plant is what drives consistency in the joint. 

The conversation breaks down the key product differences for hardscape contractors. PolySweep has run on the same 18-year formula since it was invented to solve the hazing problem on polymeric sands — the formula doesn't change every year, so the crew doesn't have to relearn the product job after job. HydroSweep is the resin-based option, made on the same plant with the same crew and quality control, designed for narrow joints down to an eighth of an inch and for sites that don't get enough sunshine for polymeric sand to perform — under decks, in the woods, on the north side of the house, and on open-graded base permeable installs.

Greg and Dan also cover the cleaning and sealing side of the SEK lineup — the SB 1300 sealer is a 30-plus-year product that was around before polymeric sand even existed, and the cleaning and sealing market is one of the most untapped opportunities for hardscapers (millions of square feet are installed every year that nobody is going back to maintain). The tour closes with a reminder that every product is made in America, right at the Aurora facility, with the same systems and quality control across the whole line.