ProRestore 21 Building Restoration Cleaner is a professional-use, buffered acid cleaner made for restoring a range of exterior building surfaces. It works on substrates including limestone, terra cotta, concrete, and other exterior cladding while providing a low-fuming formulation for restoration work.
This multi-surface restoration cleaner can remove color stains from many surfaces and is also designed to remove, clean, and de-blush many sealers. ProRestore 21 is supplied as a ready-to-use liquid and should not be diluted. Because this is an acidic professional product, surface compatibility, dwell time, rinsing, and application procedures matter.
Best For
- Professional exterior building restoration
- Limestone and terra cotta cleaning
- Concrete restoration
- Removing color stains and addressing compatible sealers
Application Notes
- Dilution: Use as-is. Do not dilute.
- Dwell Time: Extended dwell time is important when using this product
- Drying: Do not allow the product to dry on the surface
- Rinsing: Always rinse the treated surface thoroughly
- Sensitive Substrates: Use lower rinse pressures and follow the substrate manufacturer's recommended PSI when applicable
Important Surface Restrictions
- Polished Stone: Do not use on polished stone
- Specialty Glass: Do not use on metallic oxide film used for tinting or self-cleaning glass
- Antique Glass: Not recommended for restoration of antique glass
- Metals: Not recommended for brass, copper, or bronze
- Horizontal Surfaces: Not recommended for horizontal surfaces except non-colored concrete
