Specialty Surface Cleaner

Phosphoric Acid Cleaner for Tough Residues

This fast-acting, mild acidic cleaner is specifically formulated to remove efflorescence, rust stains, mineral build-up, cementitious grout haze, and mortar residue from a broad spectrum of cast and natural stone surfaces. Its professional-grade strength is balanced with a safer formulation compared to more aggressive acids, making it a reliable choice for both contractors and homeowners tackling challenging cleaning tasks on compatible materials.
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The product bottle of Phosphoric Acid Cleaner displayed next to a measuring cup and water, illustrating dilution.

Adjustable Concentration

Powerful yet controlled cleaning action

Professional-Grade Cleaning
Miracle Sealants Phosphoric Acid Cleaner is engineered as a fast-acting, mild acidic solution designed to tackle tough mineral and cementitious contaminants without the aggressive strength of harsher acids. Its dilutable formula allows for precise application control, making it suitable for both targeted spot cleaning and larger surface areas across a wide range of compatible masonry and tile materials.

Achieve a cleaner surface with professional-grade precision

Close-up of a precast concrete surface being cleaned with a brush, showing efflorescence being removed.

Effective Mineral Removal

Efficiently dissolves and lifts stubborn mineral deposits and grout haze from a variety of hard surfaces.
Honed granite countertop with rust stains being treated with a cleaner solution.

Safer Acidic Formula

Formulated to be gentler than traditional acidic cleaners, reducing risk to compatible surfaces during treatment.
Ceramic patio pavers being rinsed with water after cleaner application.

Multi-Problem Solution

Addresses multiple common surface contaminant issues with a single, fast-acting application process.
Grout lines between subway tiles being scrubbed with a small brush.

Versatile Application

Ready to work in both interior and exterior environments, adapting to various project locations and conditions.
Slate tile floor with mineral buildup being cleaned.

Customizable Dilution

Easily adjustable dilution ratios allow for tailored strength based on the specific cleaning challenge.
Mortar residue on brick being treated with the cleaner.

Fast-Acting Performance

Saves time on project completion with its rapid action against rust stains and cementitious residue.
Collage of various surfaces being cleaned: concrete, brick, and tile.
Designed for Your Project

Ideal for these cleaning tasks

This cleaner is ideal for professional contractors handling post-construction cleanup, restoration specialists treating weathered stone, and DIY homeowners maintaining their tiled and masonry surfaces. It serves projects ranging from new installation grout haze removal to long-term maintenance of outdoor living spaces.
Newly installed subway tile wall with haze being cleaned off during post-construction cleanup.

Post-Construction Cleanup

Perfect for new construction or renovation projects to eliminate cementitious grout haze and mortar residue from newly installed tile, brick, or stone, ensuring a pristine final appearance.
An exterior brick wall showing white efflorescence stains being treated.

Efflorescence Treatment

Effectively treats efflorescence on concrete, brick, and stone caused by moisture migration, restoring the natural appearance of driveways, walkways, and retaining walls.
A concrete garage floor with rust stains being cleaned.

Rust and Mineral Removal

A reliable solution for removing rust stains and mineral build-up from concrete floors, pavers, and natural stone surfaces in both residential garages and commercial settings.
Application Guide

Simple steps for effective cleaning

A person mixing the cleaning solution with water in a bucket.

Prepare the Solution

Determine the appropriate dilution ratio for your specific contaminant and surface material. Prepare the cleaning solution in a separate container as directed by the product instructions.
The cleaning solution being applied to a section of dirty tile grout with a brush.

Apply to Surface

Apply the diluted solution generously to the affected area using a mop, brush, or sprayer. Ensure complete coverage of the stains or residue to be removed.
A hose rinsing the treated surface, washing away dirt and residue.

Rinse Clean

Allow the cleaner to dwell on the surface for the recommended time to break down contaminants. Scrub the area with a stiff brush as needed, then rinse thoroughly with clean water.

See what professionals are saying

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Used this to clean severe grout haze off a new porcelain tile installation. It worked efficiently without damaging the tile face. A reliable product for post-install cleanup.

Tile Contractor

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Finally found a milder acid that effectively removes rust stains from honed limestone without etching. It’s now a staple in my restoration kit for sensitive stones.

Stone Restorer

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Applied this to efflorescence on my concrete patio pavers. Following the dilution instructions, the white haze lifted away easily. The product delivered professional results.

DIY Homeowner

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We rely on this cleaner for removing mortar residue from brick facades on new builds. It’s fast-acting and saves significant time on site compared to scrubbing with water alone.

General Contractor

A person wearing protective gloves and eyeglasses, reviewing the product label on a bottle of cleaner.

Common questions about using this cleaner

Miracle Sealants Phosphoric Acid Cleaner is designed for use on precast concrete, non-polished natural stone like honed granite and slate, ceramic and porcelain tile, grout, brick, and masonry. It is not recommended for polished or acid-sensitive stone.
The cleaner should be diluted before use, with coverage ranging from 500 to 2,500 square feet per gallon depending on the specific dilution ratio required for your cleaning task. Always follow the label instructions for proper mixing.
Yes, it is effective for exterior applications. It can be used on outdoor surfaces like concrete pavers, brick, and stone to remove efflorescence, rust stains, and mineral buildup caused by weather exposure.
Phosphoric Acid Cleaner acts quickly to dissolve contaminants. Allow the solution to sit for the recommended dwell time as per the product label—typically a few minutes—before scrubbing and rinsing thoroughly with water.
While milder than many other acidic cleaners, it is still a chemical product. It is recommended to wear protective gloves and eye protection during use and ensure the area is well-ventilated, especially for interior applications.
This cleaner is specifically formulated to remove cementitious grout haze, mortar residue, and mineral build-up that other cleaners may not effectively dissolve, making it a more targeted solution for these particular issues.

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