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The following article is intended to help making the application of Floorseal Indian Sandstone Sealer & Colour Intensifier easy.
This sandstone sealer is suitable for sealing colourful Indian sandstones & to enhance naturally occurring earthy tones & veining.
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Floorseal Indian Sandstone Sealer & Colour Intensifier is a sub-surface impregnating sealer, the active content is held in suspension within the liquid carrying agent. Once applied this colour enhancing sealer is absorbed into the sandstone to repel moisture & general staining. The sealer also enhances the naturally occurring colours contained within the sandstone. This type of breathable sealer does not form a film, it is absorbed into the surface of the stone. Apply the product twice, the 2nd application should be made within approximately 40 minutes of the 1st.
The benefit of the application of this sealer is the prevention of moisture penetration, thus helping the stone to resist general staining, frost damage & organic growth. The sealer enhances colour in a subtle, natural way. Indian Sandstone Sealer & Colour Intensifier does not create a sheen or shine, the product leaves a matt natural finish.
Non-film forming means that once applied, the sealer becomes meshed into the pores of the treated stone. This non-film forming sealer repels moisture from within. There is no visible coating/lacquer/film.
Indian Sandstone Sealer & Colour Intensifier does not form a film. For this reason we describe the product as natural/matt finish. The product also slightly deepens the colour of a sandstone (which displays earthy colours/tones/shades when dry). Your sandstone will still retain a natural matt finish, but now with an enhanced deeper colour.
We do not recommend applying Indian Sandstone Sealer & Colour Intensifier to Kandla grey sandstone, or very plain monotone sandstones. These kinds of sandstone do not display any natural colour. You may prefer to seal with a non-visible sealer like Floorseal Natural Stone Sealer Breathe. Do not confuse wetting sandstone with water with the stone being naturally colourful. For a stone to be colour enhanced it should display some natural earthy colours, when it is dry for the process to be successful.
Never apply the sealer to damp stone, the surface should be totally dry. Ensure the surface is clean before application. Try to avoid applying the product when temperatures are below 10°C & above 20°C. There is some ‘wiggle room’ in the temperatures ranges noted. If you are sealing on a very warm day, then do so early in the morning, when the surface is still quite cool.
For older surfaces we recommend pre-cleaning with Floorseal Black Spot Remover Plus. This will remove general dirt and organic growth. For cement/mortar smear removal we recommend Floorseal Cement & Grout Haze Remover.
You can apply this sealer via sprayer, roller or brush. For anything other than a very small area we recommend application using a low pressure pump-up sprayer (fitted with a coarse nozzle).
Spray onto the surface and allow the liquid to soak in. The greater the amount of sealer which is absorbed by the sandstone the more affectively it will be sealed. Try to encourage as much sealer into the stone as possible (by allowing it to saturate and therefore work its way into the pores).
The first liberal application of product is important as the sandstone will be at its most porous. The 2nd application is a ‘top up’ to fill any remaining pores which may accept a little more of the sealer. It is still important to apply the product twice, but you will find less product is required during the 2nd application.
After each application remove any excess i.e. any sealer which has not been absorbed into the stone. You can remove this with a dry roller or cloth. There is usually not much (excess) sealer visible but there may be some isolated areas on undulating riven stone. Remove the excess with 20-30 mins – perhaps sooner on a warm day.
It depends on the porosity of the sandstone but as a guide 5 litres of product covers approximately 20m² of surface area. This is accounting for applying the product twice.
The more product you can encourage into the surface of the stone, the efficiently it will be sealed. If your stone will accept 5 litres of product over (for example) 15m² it is worth applying this much product into the area. Coverage rates are always indicative, they are not fixed, ultimately the type and porosity of the stone will dictate the final coverage rate.
Indian Sandstone Sealer & Colour Intensifier has various benefits, it is breathable, non-film forming & enhances colour in a subtle & natural way. It is designed to inhibit organic growth & repel rainwater/damp. Therefore protecting & preserving exterior Indian sandstone patios.
This product has a lifespan of 4-5 years, it is possible to apply the sealer again within this time (without the need to strip the surface) if required.
The surface should be maintained by an occasional overspray of Floorseal Green Remover Concentrate.
The information contained within this article is not exhaustive. If you need further information email us Info@floorseal.co.uk
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