Waterproofing Brochure

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Joint Sealant 



Koster Joint Sealant FS-H (horizontal) is an elastic, polysulphide- based, joint sealant used to seal joints in horizontal areas. When fully cured, KOSTER Joint Sealant FS-H is a rubber-elastic sealant with a high mechanical load capacity, good resistance to ground water, sea water, salt solutions, benzenes and mineral oils; it resists roots and does not rot.



Koster Joint Sealant FS-V (verticle)is a flexible stiff / creamy polysulphide based joint sealant. When fully cured, KOSTER Joint Sealant FS-V is a rubber-elastic sealant with a high mechanical load capacity, good resistance to water, sea water, salt solutions, benzenes and mineral oils; it resists roots, does not rot and has very good retraction capabilities.