Home/Waterproofing Systems/RAINPROOF PUF 5

5-Layer Engineered System

RAINPROOF PUF 5 LAYER SYSTEM

Fluid-Applied Pure Polyurethane Membrane — 400% Elongation

Roofs, terraces, elevated decks — long-term PU membrane

Request a Quote Speak to an Engineer

System Architecture

Layer-by-Layer Configuration

Read from top (final protective layer) down to the substrate.

TOPCOAT / FINISH

UV-Resistant Aliphatic Top Coat

Solar-reflective, UV-stable aliphatic PU weather protection

WATERPROOF MEMBRANE

Intermediate Coat (2nd PU Coat)

Seamless continuous monolithic PU membrane over reinforcement

REINFORCEMENT

Reinforcement Layer

Glass fibre mesh / GEO fabric embedded in wet base coat

WATERPROOF MEMBRANE

Base Coat (1st PU Coat)

Pure elastomeric polyurethane fluid membrane

PRIMER / BOND

Primer Coat

High-penetration; seals concrete pores; exceptional bonding

SubstrateConcrete / Screed / Masonry

PRIMER / BOND

WATERPROOF MEMBRANE

REINFORCEMENT

TOPCOAT / FINISH

ELONG

>400%

Elongation at break — ASTM D 412

TENSILE

4.5 N/mm²

Tensile strength

HYDRO

5 Bar

Hydrostatic pressure resistance

Performance Data

System Specification

Base Polymer

Pure Polyurethane

Elongation

> 400% (ASTM D 412)

Tensile Strength

> 4.5 N/mm²

Crack Bridging

Up to 2mm

Adhesion

> 1.5 N/mm² (substrate failure)

Hydrostatic Resistance

No leak up to 5 bar

Cracks > 2mm

V-groove (4–6mm) and seal with ROOFEXSEAL PU 212 before priming

Packing

1L, 5L, 20L, 210L

Shelf Life

12 months

Application Sequence

How This System Is Installed

1
Primer Coat
High-penetration; seals concrete pores; exceptional bonding
2
Base Coat (1st PU Coat)
Pure elastomeric polyurethane fluid membrane
3
Reinforcement Layer
Glass fibre mesh / GEO fabric embedded in wet base coat
4
Intermediate Coat (2nd PU Coat)
Seamless continuous monolithic PU membrane over reinforcement
5
UV-Resistant Aliphatic Top Coat
Solar-reflective, UV-stable aliphatic PU weather protection