NBS Source
List your products
RIW Sheetseal 226 - Waterproof membrane.

RIW Sheetseal 226 - Waterproof membrane.

Third party certifications:
  • BBA Agrément Certificate

    BBA Agrément Certificate

    Certificate type


Self-adhesive, damp-proofing and waterproofing membrane. 

Jump to:
+44 (0)1344 397777 www.riw.co.uk

RIW Sheetseal 226 is a cold applied, high density polyethylene film coated with a bitumen/ rubber self-adhesive layer with a removable reinforced silicone release paper. Typically used for waterproofing retaining walls, floors, reservoir roofs, etc. where large unobstructed areas are to be treated. The membrane must always be covered.

Joint laps:

Side and end laps minimum 50 mm and 100 mm respectively are recommended.

General information


Water and water vapour barrier; Factory controlled thickness; Elastic and flexible; Damage easily repaired; No drying time; Sulphate resistant; Selvedge strip to improve lap sealing




RIW Limited’s waterproofing products will, subject to normal service conditions, provide an effective barrier to the transmission of liquid water and water vapour for the life of the building in which they are incorporated., The products must be installed in accordance with RIW written instructions, and following installation must not be subjected to any damage or long-term UV exposure

Uniclass 2015

Pr_25_57_08_08 Bitumen sheetsPrimary


J40/190 Self-adhesive bitumen damp proofing/ tanking

J40/40 Self-adhesive bitumen damp proofing

Specification data - Bitumen sheets

Product Reference

RIW Sheetseal 226


Not required

RIW Sheetseal Primer

Used on all vertical or inclined substrates.

Standard product features


1.5 mm.

Water vapour transmission:

< 0.3 g/m²/24hr.

Product Options


RIW Sheetseal primer is a bitumen solution.

Digital objects
PlatformCompatibleVersionCertified to
Revit 2016 2 2.0
IFC2X3 1 1.3
Download now from NBS National BIM Library
Third party certifications
Similar products from RIW