Which Concrete Remover Do I Need? Slide Off, Slide Off+ or Blaster

Slide Off, Slide Off+, and Blaster all break down cured concrete so build-up rinses off mixer drums, chutes, forms, and tools. The answer to “which concrete remover do I need?” comes down to 4 things: how heavy the build-up is, where it sits, what it is stuck to, and whether your crew would rather spray straight from the drum or mix a concentrate first. This guide covers each product, compares them in one table with an example cost per gallon, and ends with what to order.

Which concrete remover do I need? Start with 4 questions

In short, Slide Off is the ready-to-use dissolver, Slide Off+ is the foaming concentrate, and Blaster is the hydrochloric acid remover for the heaviest build-up. Answer these 4 questions about your own equipment first.

• How heavy is the build-up? Slide Off and Slide Off+ are heavy-duty dissolvers for cured build-up. Blaster, the strongest in the line, is for equipment that has gone too long between cleanings and the build-up a milder dissolver leaves behind.
• Where does it sit? On drum fins, blades, and vertical chute steel, a thin liquid runs off before it has time to work. Slide Off+ goes on as a foam that clings to vertical and overhead steel.
• What is it stuck to? All 3 list steel and rubber. Slide Off and Slide Off+ also list painted steel and plastics, while Blaster’s note says to test painted and aluminum surfaces first.
• Who mixes it? Slide Off goes on as supplied, with no mixing. Slide Off+ and Blaster are 5:1 concentrates: a 55-gallon drum makes 330 gallons of solution, 6 times its own volume, but someone has to dilute it, product into water, before each job.

Slide Off: pre-blended and ready to use

Slide Off is a heavy-duty acid-based concrete dissolver, pre-blended and ready to use straight from the drum. Spray or brush it onto cured concrete as supplied, leave it on until the build-up softens and loosens, then pressure-wash the softened material away. Repeat on heavy deposits. The product page calls for gloves and eye protection.

It is the simplest routine of the 3: no ratio to measure and no mixing step. Its listed uses run from mixer drums, chutes, and hoppers to forms, hand tools, pump hoses, and wash-bay floors. Its surface note reads “Steel, painted steel, rubber, plastics.” It is also the only product in the line sold in a 330-gallon tote.

Slide Off+: a foaming 5:1 concentrate with corrosion inhibitors

Slide Off+ is Express Chemical’s proprietary foaming concrete dissolver, a concentrate of acids, surfactants, wetting agents, foaming agents, and corrosion inhibitors. Dilute it 5:1, 5 parts water to 1 part Slide Off+, adding the product to the water, never the reverse. A 55-gallon drum makes 330 gallons of ready-to-use dissolver, and a 275-gallon tote makes 1,650.

Apply it with a foamer or sprayer so it clings to vertical and overhead steel, and leave the foam in place until the build-up softens. Do not let it dry on the surface. Pressure-wash the softened material away and repeat on heavy deposits. The corrosion inhibitors in the blend protect the metal underneath.

That makes it the one to reach for on fins, blades, vertical discharge steel, and precast forms and molds: anywhere a thin liquid runs off before it works. Its surface note and PPE match Slide Off’s: “Steel, painted steel, rubber, plastics,” with gloves and eye protection.

Blaster: hydrochloric acid for the heaviest build-up

Blaster is a hydrochloric acid (muriatic acid) heavy-duty concrete remover concentrate and the strongest cement dissolver in the line. It is made for the build-up a milder concrete dissolver leaves behind, on ready-mix mixer truck drums, chutes, and plant equipment that have gone too long between cleanings.

Blaster is also diluted 5:1, 1 part Blaster to 5 parts water, acid into water, never the reverse. It yields the same as Slide Off+, 330 gallons from a drum and 1,650 from a tote. Spray or brush the solution onto cured concrete, leave it on until the build-up softens, do not let it dry, and pressure-wash the softened material away.

Its handling and surface notes are stricter than those for the other 2. Blaster calls for acid-rated gloves, eye protection, and a face shield, and its surface note reads “Steel and rubber. Test painted and aluminum surfaces first.”

Slide Off, Slide Off+, and Blaster side by side

Entries are copied word for word from the product pages, except 2: Slide Off has no yield line because it is used as supplied, and the price row only notes whether a price is published.

At a glance	Slide Off	Slide Off+	Blaster
What it is	Acid-based concrete dissolver (cement dissolver)	Acid-based concrete dissolver (cement dissolver), foaming	Hydrochloric acid concrete remover
Form	Pre-blended liquid, ready to use	Concentrate	Concentrate
Dilution	None. Use as supplied	5:1 recommended, five parts water to one part concentrate	5:1 recommended, five parts water to one part concentrate
Best for	Ready-mix mixer truck drum interiors, fins, and blades Forms, screeds, and hand tools Plant equipment and wash-bay floors	Ready-mix mixer truck drum interiors, fins, and blades Forms, molds, and precast equipment Anywhere a thin liquid runs off before it works	Heavy duty, for the heaviest concrete buildup Ready-mix mixer truck drum interiors with heavy build-up Plant equipment and loaders
Surfaces	Steel, painted steel, rubber, plastics	Steel, painted steel, rubber, plastics	Steel and rubber. Test painted and aluminum surfaces first.
Packaging	55-gal drum, 330-gal tote	55-gal drum, 275-gal tote	55-gal drum, 275-gal tote
Yield per drum	No yield line; used as supplied	Makes 330 gallons of use solution at 5:1.	Makes 330 gallons of use solution at 5:1.
Price status	Published	Published	Published

What a gallon of use solution costs

The product pages show a price per gallon of product as it ships. For a concentrate, the useful figure is the price per gallon of use solution. For example, take the September 2026 drum prices, before freight, and divide by the gallons of solution each drum makes:

• Slide Off, used as supplied: $500 ÷ 55 gallons = about $9.09 per gallon.
• Slide Off+ at 5:1: $1,395 ÷ 330 gallons = about $4.23 per gallon of use solution.
• Blaster at 5:1: $995 ÷ 330 gallons = about $3.02 per gallon of use solution.

At those prices, the tote works out lower per gallon for all 3. These are gallons of solution, not square feet cleaned: how far a gallon goes depends on the deposit and the surface, so compare the blends on your own build-up, not on price alone. Freight is calculated at checkout on the pallet count.

What to order

• Ready-mix producers: Slide Off or Slide Off+ for drum interiors, fins, chutes, and hoppers, and Blaster for the trucks that have gone too long between cleanings. Pick Slide Off if you want no mixing and Slide Off+ if the build-up sits on fins, blades, and vertical steel. For the wash bay, Dynamic Green and Phos Clean are in the Fleet wash category.
• Precast and block plants: Slide Off+ on steel forms, molds, and precast equipment, where the foam clings and a thin liquid would run off, with Blaster for the heavy build-up a milder dissolver leaves on forms and screeds.
• Paving crews: Slide Off, used as supplied, for the forms and curb machines, alongside Paver’s Choice asphalt release on the beds and hoppers.

Order online by the drum or the tote from the Slide Off, Slide Off+, and Blaster product pages, or compare all 3 in the Concrete category. Orders ship from Granite City, Illinois, drums 4 to a pallet and totes 1 per pallet position, with the Safety Data Sheet in the paperwork. Tote quantities, standing orders, and fleet programs can be quoted by phone from the Kirkwood sales office.

Still deciding? Fleets and plants can request a free sample of any Slide Off product before the first drum, limited to 1 per product per company. Tell the Kirkwood sales office what you are cleaning and where it ships, and they will confirm the product and ship the sample with its Safety Data Sheet and use directions.

Read the label and the SDS before you start, and wear the PPE the SDS calls for. If your build-up does not match anything above, call 314-266-4600, Monday through Friday, 8 AM to 5 PM Central.