With their enormous design possibilities, it’s no surprise that terrazzo tiles are rising in popularity. Offering a durable, eco-friendly finish, these confetti-like surfaces are in complete contrast to the greige of recent years. But whilst terrazzo tiles provide a stunning and practical surface, they do require a considered maintenance regime to retain their looks and easy-care benefits.
Terrazzo tiles combine pieces of marble, stone, glass and aggregates, with a cementitious or resin binder. Cement-based terrazzo is the most porous and can absorb water, oils and stains more readily. The aggregate within the surface can also influence absorbency and performance.
Protecting terrazzo tiles
Terrazzo tiles need to be sealed before and after grouting to protect them from stains. Before sealing, tiles should be thoroughly cleaned to condition them; this will remove any factory residue and dirt. A suitable cleaner should be applied and gently agitated using a white nylon pad or microfibre cloth and tiles left to dry. Polished surfaces may need a light buff using a dry microfibre cloth to remove excess moisture before leaving tiles to dry.
When applying the sealer, be careful not to apply too much. Any excess product that’s left to dry on the surface can leave visible residue, particularly on polished or darker terrazzo. If you do decide to use a spirit-based solvent protector, ensure that the floor is properly dry before application; any trapped moisture under the sealer can create a patchy finish.
Once sealed, terrazzo tiles should be maintained with a pH neutral cleaner. Aggressive household detergents and acidic products should be avoided. These could damage the sealer and the floor; some aggregates are very sensitive to acids.
When should terrazzo be resealed
There’s no definitive timetable in terms of resealing, as it depends on the level of foot traffic and maintenance. However, the water bead test can be really useful:
· Clean the tiles to remove dust and dirt, then drop a bead of water onto the surface. If it sits in place, the tile is well sealed. If the water quickly soaks into the tile or makes the surface look darker it needs resealing.
The very best results come from treating sealing and maintenance as part of the terrazzo tile installation process, rather than as an afterthought. This will help preserve the appearance and performance of the terrazzo tiles for years to come.
By Mark Atkins, LTP Director
