Concrete - Concrete is an ideal surface to apply mosaics and comes in many forms, from garden pavers and birdbaths to buildings, poured retaining walls, cement blocks, and stucco walls. Cement-based surfaces are made for mosaic decoration! When choosing to mosaic on cement, it needs to be clean and free of debris such as peeling paint and free of cracks that may transfer through your mosaic. If cracks are present, various products and techniques can be used to isolate and stabilize the cracks and prevent them from transferring through your finished project. It is advised that you do your research when dealing with these issues. Manufacturers of crack isolation products and professionals in your area can be a great resource.

Concrete Pavers - Pavers Concrete pavers make excellent stepping-stone substrates and are a perfect first project you can use to beautify your outdoor space. Pavers are a convenient and cost-effective substrate and can withstand freeze/thaw cycles when the appropriate adhesives are used. Available in various shapes and sizes, the most common being 12" square or round and 2" thick. In smaller, regional garden centers, you may even find them in the shape of the state and fun creatures.

As a "stepping stone" these are best placed into the ground, digging a shallow void, so the paver is level with the surrounding environment. Keeping it level with the surrounding surface minimizes a trip hazard. Also, be mindful of your mosaic material and the potential "slip" risk. Stained glass is beautiful in the garden but has a high probability of slip. Pavers made with stained glass or glossy ceramic glaze may be best used as garden enhancements and not actually "stepped on."

These videos demonstrate using high-fired porcelain tile on concrete pavers to create stepping stones that withstand all weather conditions.

Cement Walls - Whether they are solid poured cement, masonry block, stucco, or brick walls are a place your imagination can run wild, offering a large blank canvas. For centuries, artists and craftsmen have covered large surfaces with mosaics to adorn buildings, retaining walls, etc. When tackling an existing wall surface, preparation is key to longevity. The surface needs to be clean, free of cracks, debris, and efflorescence. Each wall is different. Take the time to investigate what prep you need to do for your particular project. 

Although cracks in an existing wall can present a problem, it is often possible to isolate them so that they don't transfer through to your finished mosaic. There are many manufacturers of crack isolation products and methods to prevent damage. Take time to do your research.

When working with any cement-based substrate, a good quality polymer fortified or epoxy-based thinset rated for exterior use is always recommended. Please see our adhesive section for more information about thinset.Â