Waterproofing accessories FS

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Product description

Waterproofing accessories FS can be used in all Fescon waterproofing systems. The product family includes: waterproofing strip, inner and outer corners, and through-hole flanges. The waterproofing compounds are made of butyl, with a surface made of polypropylene fabric for extra strength. 

  • The through-hole flange must be one size smaller than the hole to be waterproofed. FS-L 70 is suited for a 110 mm sewer pipe, FS-L 55 for 75 mm pipes, FS-L 40 for tap angle boxes and 50 mm pipes, FS-L 23 for 32 mm pipes, and FS-L 10 for smaller through-holes. 
  • Waterproofing strip FS-N is 120 mm wide. The length of inner and outer corners is 135 mm in both directions; the total width of the floor and wall is 120 mm. 
  • Waterproofing strip FS-N is suitable for airtightness repairs together with Fescoseal A+B.


  • For all Fescon waterproofing systems
  • Through-holes
  • Where the wall and floor meet
  • Strengthening of inner and outer corners
GTIN code Product name Product number Package size
6416841259431 SEALING TAPE FS-N 25 M 25943 pcs
6416841259448 OUTSIDE CORNER FS-U 25944 pcs
6416841259479 INSIDE CORNER FS-S 25947 pcs
6416841259486 WALL PACKING FS-L 10 25948 pcs
6416841259790 WALL PACKING FS-L 23 25979 pcs
6416841259493 WALL PACKING FS-L 40 25949 pcs
6416841259783 WALL PACKING FS-L 55 25978 pcs
6416841259516 WALL PACKING FS-L 70 25951 pcs
6416841259530 DRAIN FLANGE KL-B 25953 pcs
  • Spread the waterproofing compound into the corners, where two elements meet, and into through-holes. FS waterproofing accessories compatible with the system are attached to the wet waterproofing compound. Spread the waterproofing compound thoroughly over the strengthening strips using a brush or roller. Make sure that the strips are fully attached to the waterproofing compound below, with no exposed parts. The strengthening strips must be between two waterproofing compound layers.
Other points to note 
  • Waterproofing is carried out in accordance with RT cards and RIL guidelines.

Storage and handling of waste
See the separate storage and disposal instructions https://www.fescon.fi/en/material-bank

Package size 10 rolls/box

Store in a warm place. The product must not freeze.

Usage temperature

+10°C…+25°C (base and indoor temperature) 


FS-N tape 120 mm x 25 m

outer and inner corner 135 x 135 x 120 mm

thickness approx. 0.6-1.0 mm depending on the product

Limitation of liability, product use notes and restrictions: Please familiarize yourself with Fescon Oy's general terms of delivery and the design and work instructions related to the product.