What's on the shelf
12.5% sodium hypochlorite
Fresh, batch-tested, date posted at the fill station. By the gallon into your tank, tote or drum, or in 5-gallon carboys. Pricing and the full story on the SH page.
Surfactants
House-wash and soft-wash surfactants — Cherry Surf and Lemon Dancer among them — for cling, dwell and rinse on siding and roofs.
Neutralizer and plant protection
Neutralizer for landscaping and runoff so the SH does its job on the house and not on the hydrangeas.
Degreasers and flatwork cleaners
Degreasers for driveways and fleet work and cleaners for concrete rotate through stock — call 540-300-3122 for what's on the shelf this week.
Injectors, check valves and metering
Downstream injectors, check valves, proportioners and the fittings that put the mix on the wall at the ratio you intended.
Mixing help, free
Tell the counter the surface — vinyl, brick, roof, concrete — and the tank size, and you'll leave with gallons of SH, water and surfactant written on the ticket. Or use the free SH mix calculator before you pull in. Most vinyl house washes land near 1% SH at the surface; roofs run stronger; the calculator does the math from your injector ratio.
Why buy chemicals here
SH loses strength every week it sits in a warehouse or on a truck, so a fresh local fill beats a "12.5%" jug that shipped two weeks ago. The fill lane takes rigs and totes, there's no freight surcharge, and the same counter stocks the pumps, hose and parts on the rig that sprays it — including repair when something on that rig quits.
FAQ
Where can I buy pressure washing chemicals near me in Northern Virginia?
Capital Pressure Supply stocks SH, surfactants, neutralizer and injectors at 11900 Livingston Rd Ste 139, Manassas (Mon–Fri 7–6, Sat 9–3) and 10817 Courthouse Rd, Fredericksburg (Mon–Fri 8–4, Sat 9–3). Both stores have a walk-up fill lane.
What chemicals do I need for a house wash?
12.5% sodium hypochlorite, water, and a surfactant for cling and rinse — plus neutralizer for the landscaping. The SH mix calculator turns your tank size and injector ratio into exact gallons.
Do you sell roof cleaning chemicals?
Yes — roof washes use the same fresh 12.5% SH at a stronger mix with a surfactant built for cling on shingles. The counter will set the ratio for your rig.