Cemento EXT
Exterior Decorative Microcement Finish
Description

Durex® Cemento EXT is a premixed 100% acrylic-based coating which is offered in many standard colours as well as custom colours. This product provides the finish touch that adds lasting colour and texture to exterior and interior walls. Durex® Cemento EXT is a two-step finish texture system which replicates the appearance of finely cut stone or cement (base material is Durex® Sandstone and top coat is Durex® Cemento EXT).

Advantages
  • Exceptional durability
  • Excellent water repellency; protects surfaces from moisture penetration
  • Breathable coating; allows water vapour within the wall system to evaporate
  • Excellent adhesion to substrate
  • Colourfast, not affected by ultra-violet rays
  • Simulates aged stone finish
Uses

Durex® Cemento EXT is a decorative durable coating system which provides surface colour and texture for all Durex® EIFS Systems and all Durex® Stucco Systems. This unique product, which is suitable for both exterior and interior applications, is applied in a two-step trowel application method.

Physical Properties
 
Product Type

Water-based acrylic coating with integral quartz aggregates

2 Stage Product Application – Sandbase (Base Material) & Cemento EXT (Top Coat)

Appearance

Dense paint/sand-like consistency (ready mixed)

Toxicity

Non-toxic (VOC < 40g/L)

Density

1.67 Kg/lt

Bulk Pot Life

2 years in can (sealed)

Coating Thickness

One coat-0.7 mm

Coverage

Sandstone (Base Material):  18 m2/pail (190 ft2/pail)

Cemento EXT (Top Coat): 18 m2/pail (190 ft2/pail)



Performance Properties
Method Results
Freeze/Thaw Stability

ASTM C67

Pass

Water Vapour Transmission

ASTM E96

1050 ng/Pa.s.m2 (18.3 perms)

Water Absorption

ASTM D570

3.95%

Surface-burning Characteristics

CAN4-S102

  • Flame spread – 8
  • Smoked developed < 5
  • Smoked contributed < 5
Dry Adhesion

ASTM D4541

1.25 MPa  (181 psi)

Alkali Resistance

ASTM D1308

Pass - No blistering, wrinkle, lift or change in colour

Accelerated Weathering Resistance

ASTM G155

Pass 2000 hrs