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I had couple of broken tiles in the foyer in my shop, something that was very unattractive for my customers. My shop open early in the morning and close at late hours so I wasn't sure if I would find someone who could fix the tiles. Thank you Tile Cleaners Brisbane®, I appreciate that you agreed to come and fix my problem after hours. I will keep in touch in case I need your help in the future..

William Goodman, Doncaster

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Brisbane Sealing Slate Floors

We provide specialised sealing solutions for Slate tiles

To schedule your appointment or to obtain a free estimate,
Call 1300 771 201 or use our online enquiry form

We cover all Brisbane suburbs

The topic of sealing slate tile floors seems to have more questions around it than you might expect. Do you need to seal them at all? When do you seal them? What do you seal them with? The quick answer is, if in doubt, seal using an impregnating penetrating, water-based sealant. Need more information? Call 1300 771 201

shiny slate tiles in kitchen sealed_with glossy topical sealer very wet look

To seal, or not to seal, that is the question. If you are about to install slate in your home, you have probably heard conflicting opinions about sealing your tiles. Conflicting advice comes from different experiences both contractors and homeowners have had with slate tiles.

Different experiences come from using different varieties of slate. Having slate sealed isn't always necessary, especially if you want to maintain the natural look and beauty of your slate, but if the stone is porous and/or you aren't experienced at grouting, seal the stone first. Furthermore, sealing slate is important if you desire a shiny or matte finish.

We provide specialised sealing solutions for Slate tiles

To schedule your appointment or to obtain a free estimate,
Call 1300 771 201 today or use our online enquiry form

We cover all Brisbane suburbs

Are Slate Tiles Porous?

Slate typically comes from Brazil, U.S, China and India. The Brazilian and U.S slate varieties tend to have a low absorption rate, while Indian and Chinese have variable absorption rates. Softer slate requires more attention with sealing before and after installation compared to harder slate tiles.

Slate is a foliated metamorphic rock derived from shale and consisting mainly of grains of mica and quartz. Most slate is grey to black, but the rock may be red or purple, depending on its mineral content. The surface of slate is generally uneven with cleft planes which can spall or flake due to the cleaving of the stone along its layers.

A bit more knowledge about the origin of your slate will help you determine how you want to treat it. Brazilian slate is typically dense and has variegated colours while Vermont slate is typically dense, smooth and one consistent colour (black, blue, green red). In contrast, Chinese and Indian slates are typically variable in density (soft to hard) with variegated colouring. If you have a soft slate, typically Chinese or Indian, pre-seal using a deep penetrating porous stone sealer.

We provide specialised stripping & sealing solutions for slate floor surfaces

Slate Tiles After Cleaning And Sealing

You can easily test how porous your natural slate is by applying a drop of water to the surface and watching how it is absorbed. You can then see how any type of water based stain can be absorbed by the slate tile surface and grout.

Sealing your slate will keep most stains suspended at the surface, creating a barrier that provides protection against chemical attack, deterioration and contamination. Sealing is the first important step towards protecting your investment against stains.

Which look do you want your slate floor to have -- natural, wet, or glossy? You can have the wet-look without going glossy by choosing the right finish. There are finishes that maintain the “natural look” after application, but many people love the “wet-look” for their slate floors.

As slate tiles sometimes can naturally appear lacklustre, various sealing solutions have been designed to enhance the colour or create a glossy finish.

Two main sealing options exist for slate tiles

  • Deep Penetrating Impregnating Sealer
  • (Transparent Finish/Colour Enhancing Finish)

  • Topical Sealer
  • (Gloss/Satin/Matte Finish)

deepshield slate

A penetrating impregnating transparent sealer enters the pores of your slate and once cured, will not change the look of the stone. A penetrating colour enhancing sealer however is designed to enhance and enrich the natural look of your stone surfaces.

A deep penetrating impregnating sealer protects slate and grout from water and oil based stains by chemically reacting with the surface pores using nano-technology creating a breathable protective invisible barrier. An impregnating sealer protects the slate surface and grout from absorbing stains while also resulting in cleaning and maintenance becoming much easier. Australia's Deepshield™ range of impregnating water based sealer's offer long term benefits lasting for up to 10 years while Deepshield™ Gold, based on the latest fluoro-bond technology will last for up to 15 years. Deepshield™ forms a bond with your surfaces that is stronger than any conventional mechanical or hydrogen bonding film forming sealers.

Tile Cleaners Brisbane® are experts at applying all types of sealer and will ensure your slate looks its absolute best. Tile Cleaners Brisbane® technicians can apply a topical sealer when especially required to create a high gloss, satin sheen or matte finish to your surfaces. Topical sealer is also helpful in situations where your old solvent based sealer cannot be completely removed or when required to hide certain types of damage. Topical sealer's have a life expectancy of around 3 years.

We provide specialised cleaning and sealing solutions for slate tiles

Our equipment is ideal for both domestic and commercial premises, leaving your slate tiles spotless and hygienic

To schedule your appointment or to obtain a free estimate,
1300 771 201 today or use our online enquiry form

We cover all Brisbane suburbs

deepshield generic slate

It is very important to ensure that tiles achieve their cleanest possible condition prior to being sealed. This will protect the appearance of the tile and importantly ensure that there won't be any dirt, stains or other debris caught under the layer of sealant.

To provide the best possible protection from oil and water-based stains; to maintain the look and slip resistance of your slate and to prevent damaging moisture from being trapped within the stone, it is recommended to seal your slate with a high quality, invisible, fully breathable impregnating sealer.

Our Slate Floor Restoration service will bring back your slate tiles & grout to its best possible condition, and protect them for years to come

Sealer Drying Times

Once the final coat of penetrating slate tile sealant has been applied, allow to cure for at least 24 hours before walking on the surfaces. The longer the curing time, the better protection you will have, and the longer the finish will last.

Types of Slate sealers

It is important to ensure the correct water based sealer is applied to your slate tiles which will also depend on whether they are indoors or outdoors as most sealer's will not last long outside due to being designed for internal use. If your slate is outdoors, it is important to use a water based sealer that is specifically designed for outdoor slate.

You should always ensure that the tiles themselves are completely clean, before you attempt to seal the tile. This will protect the appearance of the slate, and help ensure that there won't be any dirt or other debris caught under the layer of sealant.

deepshield moisture slate

We provide specialised sealing solutions for Slate tiles

To schedule your appointment or to obtain a free estimate,
Call 1300 771 201 or use our online enquiry form

We cover all Brisbane suburbs

deepshield surface

Water Based vs Solvent Sealer

There are two types of impregnating clear sealer, water based sealer & solvent based. In the past solvent based sealers were more widely used as they would absorb deeper into the slate and grout and also lasted longer. Today however, thanks to new technological advancements, it is recommended only to use water based sealers that last much longer and cause less potential damage to health and property.

Solvent based products are more difficult to apply and can create major problems when applied incorrectly as they are very hard to remove. Tile Cleaners Brisbane® recommends our clients apply a long lasting water based sealer to their slate tiles and grout. Topical sealer's (glossy plastic coating over the top of the slate) are still used on slate, but these older style sealers can trap moisture in the stone and make the surface slippery when wet. When a topical sealer wears in higher traffic areas, the entire surface usually needs to be stripped and re-sealed.

Slate Floor Stripping & Sealing - Before & After

It is very important to ensure that tiles achieve their cleanest possible condition prior to being sealed. This will protect the appearance of the tile, and importantly ensure that there won't be any dirt, stains or other debris caught under the layer of sealant.

To provide the best possible protection from oil and water-based stains; to maintain the look and slip resistance of your slate and to prevent damaging moisture from being trapped within the stone, it is recommended to seal your slate with a high quality, invisible, fully breathable impregnating sealer.

Our Slate Floor sealing service will protect your slate tiles and keep them looking fresh and new

Do you pre-seal slate tile before you grout?

It is highly recommended. Unlike glazed ceramic or porcelain tile, natural slate and other stone absorbs liquid easily. Because they do, if you use a grout on unsealed slate or stone the tile can be stained and the cement in the grout can bond with the surface of the slate. Slate with lots of grooves and ridges can be even more difficult because the grout will fill the grooves as well.

It is very important to pre-seal slate and other stone several times before grouting. Use a high quality sealant and choose a level of gloss to match your taste, being sure to test the sealant on a leftover piece of your stone before applying it to ensure you like the way it looks.

When a few drops of water sprinkled on any tile (including stone or slate) bead up instead of soaking in, the tile is sealed enough for grouting. Apply the grout according to manufacturer’s directions, being sure to remove as much grout haze as possible.

Only after the grout haze is gone and the grout is cured should you re-seal the tile and the grout together. Again, follow the sealant instructions carefully and enjoy!

slate before after sealing

Grouting Slate Tiles

After you grout the tiles (preferably with latex grout because it increases flex strength, reduces efflorescence, and has great bond strength), let it dry, ideally for a week before cleaning the tiles. You want to wash the tiles thoroughly, several times, to remove all remnants of excess grout so that it won't become a permanent part of your slate floor. When the tiles are dry after cleaning, you can apply two more coats of a penetrating sealant. This step is to add further protection to the slate, but also to the grout and grout-tile interface.

To seal or not to seal? Go for it with a deep penetrating, water-based slate tile sealer like Australia's Deepshield™ and enjoy your beautiful slate flooring for years.

Sealing Slate Shower Tiles

Slate shower tile adds a touch of elegance to your bathroom. Ironically, the water that slate is designed to come into contact with can cause damage if it is not adequately protected.

When you decorate your shower with slate, you want to be sure to seal the porous material with a protective coating that will keep the water out while maintaining its attractive earthen appearance. A stone enhancer will darken the slate but not seal it. To protect it from water, make sure to apply a sealer.

Sealing your slate shower tile will take a little while, but our experienced & professional team can usually have it done in a half-day.

If you are not happy with the colour of the stone and are opting to use a stone enhancer, at Tile Cleaners Brisbane® we have a new impregnating penetrating sealer with an added colour enhancer. The enhancing sealer will protect the slate stone, and will also bring out a darker, richer finish in the tile.

We provide specialised cleaning, stripping & sealing solutions for slate floor surfaces

Our equipment is ideal for both residential and commercial cleaning and sealing, leaving your floors spotless and hygienic

Tile Cleaners Brisbane® covers all suburbs


1300 771 201
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