Slate Cleaning & Sealing


What is Slate?

A fine-grained gray, green, or bluish metamorphic rock that is easily split into smooth, flat pieces used in a wide variety of applications including flooring and flagging because of its durability and attractive appearance.

Restoration and Refinishing Slate

Slate is natural stone that comes in several different textures. There is a smooth slate and a cleft finish slate, which has a rough finish. Slate is a porous stone and needs to be properly cleaned and sealed after installation.

There are several different ways to finish slate. There are color enhancers, topical coatings such as wax, penetrating sealers, and others. The type of sealant you use will determine what type of finished look you will achieve. You can achieve a gloss finish, matte finish, or a low luster finish, depending upon your preference. we can provide any result you want and will also educate you on proper care and cleaning of your slate surfaces when the restoration is complete!

We will provide you with outstanding customer service, quality craftsmanship and knowledge that only trained professional can provide. We had cases that we were hired to restore flagstone and slate flooring on sun porches so they can add heat and use them all year round. Flagstone is a beautiful stone and when treated with the correct coating, the natural beauty really comes out. Here is an example of a floor that we applied a color enhancing coating to, bringing out the natural luster of the stone.

Another case of out door Slate floor had been covered with wax for years. After it was stripped we refinished it with a special sealer that will keep it looking beautiful and easy to maintain for years.

Flagstone is usually a form of a sandstone composed of  feldspar and quartz. The material that binds flagstone is usually composed of  silica, calcite or iron oxide. Sealing flagstone is often a big question and we can help you decide how best to approach your project.


Mack Contacting’s was to rehabilitate and refinish all the main corridors at Glenhaven Public School which was done on time and budget without any incidents or complaints.

Victor A., Norfield Construction

Mack Contracting did a wonderful job, and was very reliable and submitted all necessary paperwork to me for approval. They successfully provided the needed resources to grind and polish all the floors at our various sites.

Jeff C., MGI Construction Corp.

Mack Contracting is responsive to our needs, quality oriented and very professional in every aspect of their business. We ware proud to say that they are part of our team of subcontractors that make our projects a success.

Michael D., Scepter Industries Ltd.