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Restoration Cleaning

Chemical Cleaning
Cleaning Your Building Will Make a Difference

Restoration cleaning is the process of removing staining and contaminents from the masonry exterior. Because masonry is porous, these contaminents are not just on the surface, but also work into the pores of the brick, requiring a more comprehensive approach to cleaning than simply scrubbing the surface.

Why Clean the Building Exterior?

There are two common reasons for cleaning a masonry structure. The most common reason is part of a larger restoration project in which tuckpointing or other masonry repairs are being performed. It is advantageous to clean at this time because it allows for better color matching of any replacement brick or stone needed during the project, as well as a better color match to the original mortar. It is also cheaper as the equipment has already been mobilized and a team is already in place to perform other work.

The other common reason for cleaning is asthetics. Clean buildings are perceived as more valuable. They are nicer places to work, shop, and live. Clean buildings add to the character of a neighborhood.

Which Cleaning Method is the Best?

There are many different cleaning methods available today. Most fall into two categories, abrasive and chemical.

Abrasive- These are cleaning methods such as sandblasting that fire abrasive substances at the surface to wear away buildup on the masony surfaces. Other abrasive examples are water blasting, soda blasting, and even dry ice blasting. Regardless of the name or material, any method that relies on mechanically wearing away buildup is abrasive by nature. When abrasive methods are used, they also take some of the masonry with them. Frequently this includes the outer glaze on bricks that protect them from the elements.

Chemical- These cleaning methods use specialized chemicals that are designed to remove buildup and staining from masonry without damaging their physical and chemical nature. Restoration cleaning falls under this category. Chemicals are applied to the masonry for a certain period of time to gently remove staining. This is the preferred method of historic preservationists.

How Long Will the Building Remain Clean?

The environmental conditions that surround the building determine how long it will remain clean. Frequently the staining and buildup that are removed during cleaning started as soot from coal burning trains, powerplants, and decades of smog from traffic.

Serving the Twin Cities 7 County Area