The standards that matter.
Quick guide to the references that recur in specifications and on product data sheets.
UNI EN 1504
Products and systems for the protection and repair of concrete structures. It organises the work into principles and methods; part 2 covers surface protection, part 3 structural repair with classes R1–R4.
EN 934-2
Admixtures for concrete. Defines the types and requirements: T2 identifies superplasticisers (BV), T9 water-resisting admixtures.
EN 14891
Liquid-applied water-impermeable products for use under ceramic tiling. Codes such as CM O1 P indicate cementitious binder, crack-bridging capability and resistance to chlorinated water.
EN 15814
Polymer-modified bituminous thick coatings (PMBC) for below-grade waterproofing. Type classes W2A, CB2, C1/C2A.
EN 13491
Geosynthetic clay barriers for controlling seepage in tunnels and underground works. Bentonite geocomposites for public contracts normally require attestation system 2+.
EN 14889-2
Synthetic fibres for concrete. Classification by type and performance declaration requirements.
DIN 18533
Waterproofing of structures in contact with the ground. Classifies water loads (W1-E, W2-E, W4-E) and the systems allowed for each.
DIN 18534 / 18535
Waterproofing of interior rooms (classes W0-I…W3-I) and of tanks and containers (W1-B…W2-B).
DIN 4030
Assessment of the aggressiveness of water and soil towards concrete.
WTA
Technical data sheets of the scientific-technical association for building renovation. Sheet 4-6 covers waterproofing from the inside; the render sheets are the reference for damp and salt-laden masonry.
UNI 11333
Qualification of installers of waterproofing systems. It is the basis of installer certification in Italy.
DVGW W-347 / W-270
Hygienic requirements for cementitious materials in contact with drinking water and verification of microbial growth on surfaces.
A plain-language summary for guidance only. For the obligations applicable to a specific project, the current text of the standard and the project specification prevail.