MasterSeal 581

Single component cementitious waterproofing membrane specially designed for positive and negative water pressure conditions

What is MasterSeal 581 and where to use it?

MasterSeal 581 is a cementitious waterproofing membrane that is applied both on new and on existing structures. MasterSeal 581 is successfully used in interior and exterior waterproofing of concrete and masonry, above and below ground level. For example, Masterseal 581 is used in tanking of basements, water reservoirs, tunnels, lift pits, concrete pipes etc. MasterSeal 581 is also used as a replacement for external rendering systems.

What are the unique selling points of MasterSeal 581?

MasterSeal 581 is the most easy to use solution for waterproofing against water both in positive or negative side. MasterSeal 581 is a single component product that requires only to be mixed with water for the application. MasterSeal 581 shows a high water pressure resistance, both from positive and negative side. This allows the application in the most demanding situations with excellent success.  MasterSeal 581 fulfills the requirements of European and local legislations to be in direct contact with potable water. This includes the regulations regarding the positive lists of constituents and the migration tests. Approvals for contact with potable water are available.

Which are the benefits of MasterSeal 581 for you?

Simple application and maximum effectiveness are the main benefits that you can achieve by using MasterSeal 581. MasterSeal 581 only requires to be mixed with clean water, is applied on humid concrete substrates and tools are cleaned using only water. Fully certified solution according EN 1504 part 2 that ensures consistency in performance.

Direct contact

Chris Gallivan

Product Manager

+44 7966123422


MasterSeal 581: Technical Data Sheet

pdf (122.54 Kb)


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