KTH MULTI-SEALER is a water base paste which can form a durable and flexible polymer protective screen to protect surface after drying. The 3 in 1 function included Waterproofing, crack-proof, mildew. It is most useful for waterproofing, pre-casting joints, roof-tops, cement surface, walls and ceilings, concrete tiles, roof-gutter area, asbestos cements, zinc and roof slates. It is use to protect the surface from corrosion.