Sandstone can be highly porous - although porosity will vary from piece to piece a tablespoon of water on a sandstone surface will be absorbed in seconds. Porosity is also affected by the finish - highly polished sandstone is a little harder to penetrate than surfaces with a honed(matte) finish.
To provide the best possible protection from oil and water-based stains; to maintain the look and slip resistance of your sandstone and to prevent damaging moisture from being trapped within the stone, it is recommended to seal your sandstone with a high quality, invisible, fully breathable impregnating sealer.
Sandstone's calcite composition makes it susceptible to acid attack from spilt food and drink. Its high porosity can also mean oil will permeate the surface and leave stains when not properly sealed with a penetrating/impregnating sealer. Sandstone's calcite composition makes it susceptible to acid attack from spilt food and drink. Its high porosity can also mean oil will permeate the surface and leave staining if it is not properly sealed with a penetrating / impregnating sealer.
Sealing your sandstone will keep most stains suspended at the surface, sealing is the first important step towards protecting your sandstone against stains.
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Two main sealing options exist for sandstone tiles
- Deep Penetrating Impregnating Sealer
- Topical Sealer
(Transparent Finish/Colour Enhancing Finish)
A deep penetrating impregnating sealer protects sandstone and grout from water and oil based stains by chemically reacting with the surface pores using nano-technology, creating a breathable protective barrier. An impregnating sealer protects the sandstone 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 lasts for up to 15 years.
A penetrating impregnating transparent sealer enters the pore structure of your sandstone and once cured, will not change the look of the tile or stone whereas a penetrating colour enhancing sealer is designed to enhance and enrich the natural look of stone surfaces.
Tile Cleaners® technicians are the experts at applying all types of sealer and will ensure your sandstone looks its absolute best. Our 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 can not be completely removed or when required to hide certain types of damage. Topical sealer's usually have a life expectancy of around 3 years.