Waterproofing: Factors to consider when choosing building materials

Building Products Index Ltd Waterproof Membranes, waterproofing Leave a Comment

Delta MembraneView the Delta Membrane entry on BPi

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There is a wide choice of structural waterproofing materials available in the market and it can be difficult to determine the best option for your project.


BBAWe understand the complexity and competitiveness of the industry and the challenges this brings for manufacturers seeking to improve margins, reduce costs and improve predictability. Whether you’re involved in the specification, procurement and/or installation, we understand the challenges you face including managing financial risks, efficient delivery, or meeting legislative or environmental requirements.

Deuxan_2C_BBA_CertificateWhen researching waterproofing materials, you will notice that the price differs widely from manufacturer to manufacturer.  Rule of thumb – it is not always advisable to look for the cheapest!

Choose waterproofing materials that will serve you well.  With potentially heavy consequences (from hefty fines to imprisonment) for using or specifying products in the UK that do not meet the mandatory legal requirements, it is strongly advisable to check the source of products you are planning to specify, use or install.


All manufacturers should be able to provide you with their CE Mark certification and Declarations of Performance (DoP) as a minimum.

Product Credibility

DoP-Terraxx-17-001-02-1A BBA Agrément Certificate relates to the quality and performance of a product.  Many manufacturers undertake costly and comprehensive assessments of their products, which include laboratory tests, on-site evaluations, quality management checks and inspections of production.  If they meet these requirements, they are awarded a BBA Agrément Certificate.

CE Marking is a compulsory legal requirement.  By placing a CE mark on a product, the manufacturer is declaring, conformity with all the legal requirements needed to achieve CE marking status. The manufacturer is thus ensuring validity for that product to be sold throughout the EEA (European Economic Area).

Regulation (EU) No. 305/2011 (Construction Products Regulation, or CPR) of the EuropeanParliament and of the EuropeanCouncil is a regulationthat lays down harmonised conditions for the marketing of construction products.  Regulation EU No. 305/2011 requires all Cavity Drain Membranes/Cavity Membranes hold the CE Mark and have a DoP.  Responsibility for ensuring CE Product marking lies with the EU based manufacturer, importer or distributor of that product.


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