Crommelin Natural Finish Penetrating Sealer and Water Repellent Sprayable is a premium clear surface treatment formulated to provide a deep penetrating water repellent barrier, without changing the look or feel of masonry, concrete, natural stone, paving or timber surfaces. Natural Finish Penetrating Sealer and Water Repellent Sprayable provides long term water and mould repellency, allows natural substrate breathability and will not increase surface slipperiness. For maximum stain resistance, use Crommelin Concrete and Paving Wet Look satin, wet look gloss or water based film-forming sealers.