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Grate Seal


Grate Seal Range webThe Fernco Grate Seal is a specially designed, one-way rubber valve that fits straight into an existing waste outlet.
Once the valve is fitted, it will prevent hazardous sewer gasses, airborne bacteria, soap suds, vermin and noise from making their way out of the drainage system and into habitable areas.
The one-way valve does not restrict flow through the drainage system - the flow rates achieved by the Grate Seal can easily cope with the maximum allowable flows from plumbing fixtures.

One user commented; Just want to say, we purchased 4 Fernco Grate Seals and have had them in for approximately 6 weeks now, and all is wonderful.  You can't imagine how nice it is to walk into the bathrooms and not be greeted with that embarrassing odour.  More spare time now that I don't have to keep flushing them with bi-carb and vinegar, which lasted a couple of days, if lucky!


Fernco Grate Seal can be used with most common sizes of waste pipes and outlets around the world. Some typical applications for the Grate Seal are:
    •    Floor wastes
    •    Shower wastes
    •    Laundry floor wastes
    •    Plant room floor wastes
    •    Urinals
    •    High-rise buildings
    •    Domestic, Commercial & Industrial applications

Suitable for PVC, Copper, Cast Iron, HDPE and Earthenware pipes. Two different sizes of Fernco Grate Seal are available which cover 100mm, 80mm and 50mm diameter waste pipes and drains. The two varieties available are: GS01, to suit both 100mm & 80mm pipe; GS50 - To suit 50mm pipe.


Installation of a Fernco Grate Seal is fast and easy. A water seal is not needed and alterations to existing outlets are not required.

The Grate Seal can be installed in four simple steps;

  1.     Remove existing grate from waste outlet where the seal is to be installed.
  2.     Remove the scale from the walls of the pipe.
  3.     Insert Grate Seal below grate.
  4.     Reinstall grate. If installing in a smaller waste outlet, trim the cone to applicable size.