Quantum Select OverClad
Advanced Drained Moisture Managed Overcladding EIFS for Existing Mid-Rise & HighRise Buildings

Quantum Select Overclad has been specially designed to facilitate the recladding of existing buildings by substantially upgrading the thermal efficiency of the building envelope while encorporating the ideal moisture mamanement drainage system.  All in all, the best most cost effective method for the retrofit of existing midrise and highrise aging buildings. The aesthetics of the building can be further enhanced by a finish texture coat which can be selected from any one of the available Durex® Architectural Coatings. Quantum Select Overclad system is ULC rated as non-combustible cladding meeting building code requirements for non-combustible construction. It can be installed by adhesive, mechanichal fasteners or a combination of both.

  • CCMC listed (13103-R)
  • Continuous venting at floor lines and horizontal terminations, using pre-manufactured vented boards
  • Positive drainage (through a network of vertical and horizontal channels)
  • Continuous air/vapour barrier
  • Simple interfacing with other pressure equalized claddings
  • 2-hour fire rating in accordance with ULC W-456
  • Aesthetic design flexibility
  • GDDC Factor 47%  (Geometrically Defined Drainage Cavity)
  • CI factor 0.65 RSI (R 3.9) per inch  (Continuous Insulation)
  • CI factor 0.70 RSI (R 4.0) per inch Type II EPS (Continuous Insulation)

Quantum Select Overclad is ideally designed for the restoration of existing masonry clad buildings that require an upgrade of its building envelope. It is equally suitable for use over a wide range of structurally sound or questionable substrates and is recommended for use in buildings which require moisture managed cladding.

Performance Properties
Building Code Conformance


Category 1




Non-Combustible Lamina

Fire Test of Exterior Wall Assemblies

Part 3

  • Article
  • Article
  • Article & Table
  • Sub-Section (1) (b)
  • Combustible Cladding on Exterior Walls
  • Allowable Minor Combustible Components
  • >10% Unprotected Openings
  • CAN/ULC S101 – 15 minutes – Non-Combustible Base Coat

Part 5

  • Section 5.6.1
  • Sub-Section
  • Section 5.9.4
  • Protection from Precipitation
  • Sealing and Drainage
  • Exterior Insulation Finish Systems

Part 9

  • Clause
  • Sub-Section
  • Clause
  • Section 9.27.2
  • Article
  • Sub-Section 9.27.13
  • Article & Table (A)
  • Article
  • Insulation Materials  CAN/ULC S701
  • Position of Low Permeance Membranes
  • General (Cladding, Application)
  • Required Protection from Precipitation
  • Elements of Second Plane of Protection
  • Exterior Insulation Finish Systems
  • >10% Unprotected Openings
  • >0.6 m Limiting Distance

Durex Quantum Select Type I

Durex Quantum Select Type II


Thermal Resistance                     GDDC Factor

0.65 RSI  (R 3.9) per inch                  47%

0.70 RSI  (R 4.0) per inch                  47%


Air / Vapour Barriers

  Durex Flexseal

  Durex Ectoflex

Air Barriers

  Durex Flexseal VP

  Durex AirStop

  Durex Flexcrete

ASTM E96   – Water Vapour Transmission



(Refer to product specific Technical Data Sheet for more detailed data)

  Method A                              Method B

                                               2.9 ng/Pa.s.m2

18 ng/Pa.s.m2                                  91 ng/Pa.s.m2


629 ng/Pa.s.m2                              972 ng/Pa.s.m2

185 ng/Pa.s.m2                              505 ng/Pa.s.m2

400 ng/Pa.s.m2                              972 ng/Pa.s.m2



-Durex“M” fasteners (masonry)

-Durex “W” fasteners (wood)

-Durex “S” fasteners (steel)


Durex Flexcrete

Durex Monobase

Durex VCA 3.0

Mechanical Attachment:

ASTM B-117 – salt spray

DIN 50012 - SO? exposure

FM4470  &   DIN 50018 SFW

Adhesive Attachment:

ASTM D1623    Adhesion Properties

(Refer to product specific Technical Data Sheet for more detailed data)


750 hrs. or better

25+ cycles

30 cycles  Pass


1.12 MPa   (162 psi)

1.38 MPa   (200 psi)

1.02 MPa   (148 psi)


Impant Resistance

Durex Fiberglass Mesh

(Note: Impact resistance level is directly related

to the weight and  layers of Fiberglass mesh

used in the lamina)

ASTM E2486 – Impact Resistance


(Refer to Table 1.5.9 of the Quantum Select OVERCLAD

Specifications for detailed selection chart for guidance

on level of impact resistance required)

                        Retention            Retention         

                        Physical               Performance

Standard            3 N.m                   10 N.m            PASS

Intermediate    8  N.m                   15 N.m            PASS

High                  13 N.m                   20 N.m            PASS

Ultra High        20 N.m                   30 N.m            PASS

Extreme           25 N.m                   40 N.m            PASS

Base Coat

Durex Uniplast/Acrybond “S”

Durex Monobase

CAN/ULC S114  Noncombustibility

Rated Noncombustible

Rated Noncombustible


Durex Architectural  Coatings

   Classic Series

   Premium Series

   Artisan Series

   Kolor Gard Series

   Elastomeric (FX) Series

CAN/ULC S716.1   &

CCMC Report #  13103-R


(Refer to product specific Technical Data Sheet

and CCMC Evaluation Report #13103-R for

more detailed data)

Durex Architectural Coatings

Meet and exceed all requirements


Fire Protection


(Compliance to NBC (b) )



 (Fire Resistance rated Assemblies)



(Compliance to NBC

Rated as non-combustible cladding ULC design EW21/ EW22


1 hr. FR rating ULC design  W489 (Load Bearing)

2 hrs. FR  rating ULC design W485 (Load Bearing)

2 hrs. FR rating ULC design W456 (Non-Load Bearing)


Intertek  listing  # DPL-WEIFS 30-01

Wind Load Resistance

ASTM E330    – sustained

ASTM E330    – cyclic


ASTM E330    – blow-out

-2.5 kPa for 60min. – no visible damage to any of the wall components

600 cycles alt. 0 to -2.5kPa – no visible damage to any of the wall components

-3.75kPa applied for 10 sec. – no visible damage to any of the wall components - max. pressure 7.12 kPa

Water Tightness


400 Pa pressure difference for 15 min. –  no water penetration through the  exterior surface finish

System Compliance

CCMC Technical Guide for EIFS

CAN/ULC S716.1 EIFS Materials & System

CCMC Evaluation Report # 13103-R

Durex Quantum Select OVERCLAD is fully compliant with:

    CAN/ULC S716.1  Materials & System

    CAN/ULC S716.2 Installation of Components & WRB

    CAN/ULC S716.3 Design Application

System Layer Optional Products Per Layer Notes
Water Resistive Barriers (WRB)
Transition Membrane
Insulation Adhesive
Rigid Insulation (Exterior)
Base Coat
Reinforcing Mesh
Finishes - Classic Series
Finishes _ Premium Series
Finishes - Artisan Series
Finishes - Flexible Series
Finishes - Kolor Gard