EM Construction provides professional steam cleaning services for masonry, concrete, and stone surfaces on residential and commercial buildings throughout New York and New Jersey. Steam cleaning is one of the safest and most effective methods for restoring the appearance of building facades, removing decades of grime and biological growth without damaging the underlying material.
New York City’s urban environment deposits a constant layer of pollution, exhaust soot, dust, and biological material on building surfaces. Over time, these deposits discolor masonry, accelerate surface deterioration, and give buildings a neglected appearance. Chemical cleaning methods can be effective but carry the risk of damaging sensitive masonry or leaving residual chemicals that cause long-term harm. Steam cleaning provides a safe, low-chemical alternative that is particularly appropriate for historic masonry, fine stone, and environmentally sensitive applications.
What Is Steam Cleaning?
Steam cleaning uses superheated low-pressure steam — typically delivered at temperatures between 200°F and 300°F — to dissolve and lift surface deposits from masonry and stone without the mechanical impact of pressure washing or the chemical aggressiveness of acid or alkaline cleaners. The heat and moisture work together to break down the bond between the surface and accumulated grime, allowing deposits to be gently removed with brushes or low-pressure rinse water.
Our Steam Cleaning Services
Brick & Masonry Facade Cleaning
We clean brick, block, stucco, and concrete building facades using steam to restore the original color and texture of the masonry without the risk of joint erosion, surface etching, or water damage associated with high-pressure washing.
Natural Stone Cleaning
Limestone, brownstone, sandstone, granite, and marble are all sensitive to aggressive cleaning methods. Steam cleaning is ideal for these materials, effectively removing pollution deposits and biological growth while preserving the stone’s surface texture and finish.
Terra Cotta & Architectural Ceramic Cleaning
Historic terra cotta and decorative ceramic elements are irreplaceable and highly vulnerable to damage from harsh cleaning methods. Steam cleaning gently restores these surfaces without risking glaze damage or structural harm to fragile profiles.
Graffiti Removal
Steam, combined with appropriate low-VOC chemical treatments where needed, effectively removes spray paint graffiti from masonry surfaces. Early treatment before paint fully cures achieves the best results with the least residual staining.
Efflorescence Removal
White efflorescence deposits on brick and concrete facades are dissolved and removed by steam cleaning. We also address the underlying moisture source to prevent rapid re-occurrence.
Biological Growth Removal
Mold, algae, lichens, and biological staining are killed and removed by steam cleaning. For persistent biological growth, we apply biocidal treatments following cleaning to extend the time before regrowth occurs.
Monument & Ornamental Cleaning
Carved stone ornaments, cornices, keystones, and architectural details receive careful, targeted steam cleaning to restore their visual clarity without any risk of surface damage.
Benefits of Steam Cleaning Over Pressure Washing
– No risk of mortar joint erosion from high water pressure
– Effective at lower water volumes — reduces water runoff and associated costs
– No harsh chemicals that can damage masonry or contaminate runoff
– Safe for historic and sensitive masonry types
– No salt introduction (as can occur with some chemical cleaning agents)
– Reduced risk of water penetration into the wall assembly
When to Choose Chemical Cleaning
For heavily soiled surfaces or specific contaminants (such as rust staining or heavy calcite deposits), chemical cleaners may be required to supplement steam. EM Construction carries chemical cleaning methods in our service offering and selects the gentlest effective method for each situation. All chemical cleaners are tested on an inconspicuous area before full-surface application.
Our Cleaning Process
1. Pre-Cleaning Assessment — We evaluate the type of masonry, nature of the soiling, and any areas of particular sensitivity before specifying the cleaning method.
2. Test Panel — A test area is cleaned and evaluated before full-scale cleaning proceeds, particularly on historic or sensitive surfaces.
3. Protection — Adjacent surfaces, windows, landscaping, and drainage structures are protected before cleaning begins.
4. Steam Cleaning — Superheated steam is applied systematically to all soiled surfaces, with brush agitation where needed to address stubborn deposits.
5. Rinse — Residual loosened material is rinsed with low-pressure water.
6. Biological Treatment — Biocidal treatment is applied where biological growth was present.
7. Inspection — The cleaned surface is inspected in varied lighting conditions to confirm uniformity and completeness.
Service Areas
EM Construction provides steam cleaning services throughout all five New York City boroughs, Long Island, Westchester County, and northern New Jersey.
Get a Free Estimate
Restore the original beauty of your building’s facade safely and effectively. Contact EM Construction today for a free assessment and estimate for steam cleaning services.