Professional-grade residue removal

Heavy-Duty Acidic Cleaner

This fast-acting, concentrated cleaner is engineered to remove the toughest post-installation residues and environmental stains from textured, non-polished surfaces. Its industrial-strength formula provides professionals and DIYers with the power to restore surfaces efficiently.
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The product bottle shown with dilution ratio graphics.

Dilutable up to 10:1 ratio

Powerful, concentrated cleaning formula

Engineered for performance
This fast-acting, industrial-strength formula is concentrated to deliver maximum cleaning power per gallon. Its ability to dilute up to 10:1 provides exceptional versatility and economy, allowing you to adjust the strength precisely for the task, from light haze to heavy deposits.

Restore and protect hard surfaces with confidence

Worker applying cleaner to a tiled floor, dissolving white grout haze to reveal clean grout lines.

Eliminates tough residues

Effectively dissolves stubborn grout haze, mortar residue, and joint cement for a clean, professional finish.
Close-up of cleaner being used on natural stone, removing visible white lime and hard water deposits.

Powerful mineral deposit removal

Formulated to tackle lime, hard water deposits, and efflorescence without excessive scrubbing.
Exterior brick wall being cleaned, showing rust stains disappearing as cleaner is applied.

Rust and grime fighter

Cuts through rust and heavy grime, revitalizing the original appearance of textured surfaces.
Side-by-side comparison of a dirty, efflorescence-covered patio slab and a clean, restored slab after treatment.

Interior & exterior versatility

Works on both interior and exterior surfaces, providing a versatile cleaning solution for various projects.
Contractor using the cleaner on an interior brick fireplace surround, removing soot and grime.

Professional-grade strength

Industrial-strength formula delivers professional results, ensuring surfaces are thoroughly cleaned and prepared.
The Heavy-Duty Acidic Cleaner bottle next to a bucket of the diluted solution, ready for use.

Concentrated for economy

The concentrated formula dilutes up to 10:1, offering exceptional coverage and value for large-scale jobs.
A collage showing various surfaces: a newly tiled floor with haze, a stained brick wall, and a concrete patio with efflorescence.
Ideal for demanding projects

Where and when to use it

This cleaner is the go-to solution for professionals and DIYers tackling post-installation cleanup or restoration projects on tough, porous surfaces. It excels where standard cleaners fail.
Worker cleaning grout haze from a newly installed ceramic tile floor in a kitchen.

Post-installation grout haze cleanup

Essential for post-tile installation cleanup, removing haze and mortar smears to achieve the intended finished look of a new floor or backsplash.
A homeowner cleaning mineral stains from a decorative stone retaining wall in a garden.

Exterior masonry restoration

Perfect for restoring weathered exterior masonry, removing years of mineral buildup, efflorescence, and rust stains from brick, stone, and concrete.
Removing rust stains from a concrete driveway near a metal fence post.

Tough rust and lime deposit removal

Tackles challenging rust stains, hard water deposits, and lime scale on textured, non-polished surfaces in both residential and commercial settings.
Simple, effective application

How to clean with Heavy-Duty Acidic Cleaner

Safety gear including gloves and goggles placed next to the cleaner bottle on a workbench.

Prepare for safety

Always wear protective gloves and goggles. Ensure the work area is well-ventilated before beginning the cleaning process.
Pouring concentrated cleaner into a bucket of water to create the diluted cleaning solution.

Mix the solution

Dilute the concentrated cleaner with water at a ratio up to 10:1, depending on the severity of the residue or stain being treated.
Applying the diluted cleaner to a stained surface with a brush, followed by a thorough rinse with water.

Apply, dwell, and rinse

Apply the solution to the surface, let it dwell for a few minutes, agitate with a brush, then rinse thoroughly with clean water.

See what users are saying

Decorative customer review avatar icon 1
Used it to clean up a massive grout haze mess after a tile installation. Diluted it properly, and it cut through the haze quickly. Saved me hours of scrubbing. A must-have for any tiler.

Mike T.

Decorative customer review avatar icon 2
Had terrible lime and hard water stains on my patio. This cleaner made them disappear. You need gloves and good ventilation, but the results are professional. The bottle lasts a long time.

Sarah L.

Decorative customer review avatar icon 3
As a contractor, I rely on this for post-job cleanup. It reliably removes mortar residue and grout haze from brick and concrete. The dilution flexibility makes it cost-effective on large commercial jobs.

David R.

Decorative customer review avatar icon 4
I was nervous using an acidic cleaner, but following the instructions, it worked wonders on the rust stains from my old sprinkler. The concrete looks brand new. Just be sure to rinse well.

Jenny K.

A person reading the product label for safety and usage instructions.

Common questions about Heavy-Duty Acidic Cleaner

This cleaner is specifically formulated for textured, non-polished, natural and manufactured surfaces like certain tiles, grout, brick, and concrete. Always perform a test in an inconspicuous area first, as acidic cleaners can damage polished or sensitive stone like marble.
The concentrated formula can be diluted with water at ratios up to 10:1. For light grout haze, a 1:1 dilution may suffice. For heavy lime or mortar residue, a stronger solution with less water is recommended. Always consult the product label for specific guidance based on the residue type.
Apply the diluted solution to the surface and let it dwell for 2-5 minutes to allow it to penetrate and break down the residue. Do not let it dry. Gently agitate with a non-metallic brush or pad, then rinse thoroughly with clean water. Repeat if necessary for particularly stubborn stains.
For typical residential use, one gallon of the concentrated cleaner, when diluted, can cover approximately 2,000 to 4,000 square feet. Actual coverage depends on surface porosity and the severity of the residue being removed.
Yes, it is designed for both interior and exterior applications. It is effective on vertical and horizontal surfaces. Ensure good ventilation when using it indoors, and consider environmental regulations when using it outdoors near landscaping or storm drains.
While industrial strength, it is easy to use for informed DIYers. The key is proper dilution, following safety precautions like wearing gloves and goggles, and thoroughly rinsing the surface after cleaning. Its concentrated nature makes it economical for large projects.

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