Many having not looked at Pre-sealing in the past has lead to stone installation projects being failures. Here at Stone Doctor Australia, we will always remind you that all or most naturals stone types are porous but at varied levels. Some being more absorbent than others and via-versa. However, due to the influx of new materials of which some are hugely porous, they tend to be over absorbent and gets stained easily when it gets in contact with adhesives, grouts, dirt and grime during their installation phase, they tend to catch on to these external factors and get permanently stained. It therefore important to pre-seal your porous type materials before installation or in many occasions before grouting. Our Lithofin Pro water based pre-sealer is an ideal product which has undergone numerous tests over many stone surfaces and has always proven to effectively elliminate issues associated with staining of very porous stone types.