Terrazzo is a composite material, poured in place or precast, which is used for floor and wall treatments. It consists of chips of marble, quartz, granite, glass or other suitable material, poured with a cementitious binder (for chemical binding), polymeric (for physical binding), or a combination of both.
TYPES OF FINISHES
A glossy, highly reflective surface
- Surface is very smooth and not very porous
- Polished crystals bring out brilliant colors and grains (400 to 3500 grit to polish a surface)
- Shine comes from the natural reflection of the stone’s crystals
- Polish can wear away due to heavy foot traffic and improper maintenance
A flat matte to low sheen gloss
- Surface is very smooth, but very porous
- Many more and wider gaps in surface than polished stone
- Medium density
- Commonly used in low traffic areas or for aesthetics
- Colors are not as vibrant as a polished stone
SAND BLASTED TERRAZZO
Pressurized flow of sand and water that results in a matte finish
Pre Sealing Terrazzo
Occasionally pre sealing terrazzo is required prior to installation. This is dependent on the type of terrazzo, installation methods and products being used. It is always best to consult with your tile supplier to verify whether your terrazzo requires this treatment. If required, sealing terrazzo on all six sides using Aqua Mix® ProBlock a minimum of 24 hours prior to installation.
Aqua Mix® ProBlock is a water-based penetrating sealer designed to resist staining caused by water-soluble minerals (including picture framing effect) which are normally absorbed through the back of the tile during installation. It also helps resist efflorescence migration.
If applying an Enhancing Sealer as the final surface seal, DO NOT apply any ProBlock to the top surface as it will stop the penetration of enhancing sealers. Please contact Aqua Mix® prior to installation if an enhancer is specified for use.
Pre-Grout Sealing Terrazzo
If the terrazzo does not require to be pre-sealed, it is still highly recommended to apply a coat of sealer on the surface prior to grouting. This is to act as a grout release and assist in the grout clean-up process. This is very important as acidic cleaners cannot be used to removed cured grout residue. The final sealer you select should be the product used as the pre-grout sealer.
Grout Haze Removal
It is important that all of the grout haze is removed between 3-10 days. A minimum of 3 days for the grout to cure and harden, and no longer than 10 days or it may need to be mechanically removed.
Detailed instructions: Click here
Smooth surfaces (polished, honed) should only be sealed using either a Natural Look Sealer or an Enhancing Sealer. The best sealer for terrazzo is Aqua Mix® Sealer’s Choice® Gold – Rapid Cure, howev,er we have a range of sealers to suit your requirements:
Sealing Terrazzo with a Natural Look Penetrating Sealer:
- Good: Aqua Mix® Penetrating Sealer
- Better: Aqua Mix® Pro-Solv®
- Best: Aqua Mix® Sealer’s Choice® Gold – Rapid Cure or Aqua Mix® Ultra-Solv®
Sealing Terrazzo with an Enhanced Look Penetrating Sealer:
Note: Sealing terrazzo with a penetrating sealer will not alter the slip resistance. For more information regarding slip resistance, click here
Maintaining Terrazzo Surfaces
Countertops and Walls
Countertops/Bench-tops, vanities, and walls should be regularly cleaned using any of Aqua Mix® Routine Cleaners.
Regular use of Aqua Mix® Aqua Shield™ Cleaner & Resealer will ensure that your terrazzo always maintains maximum stain resistance.
Floors should be regularly cleaned using Aqua Mix® Concentrated Stone & Tile Cleaner. If the surface is allowed to build up, then scrub the surface using Aqua Mix® Stone Deep Clean, Aqua Mix® Heavy-Duty Tile & Grout Cleaner or Aqua Mix® NanoScrub® and an Aqua MIx® AquaScrub.
Etching of Terrazzo
Because carbonates (marble, travertine or limestone, cement and terrazzo) react to acid (acidic liquids & cleaners) to create carbon dioxide, the effects to the stone are permanent. The destruction of carbonates shows on the surface of stone as etching.
Although the particles of stone cannot be recovered, they can be polished or refinished to match the finish of the stone.