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Description

Dryvit Cement Board MD Finish System is a range of 100% acrylic polymer based anti-crack renders designed to out-perform the shrinkage and cracking characteristics of traditional renders. The range offers a variety of coloured and textured coating options providing various levels of protection when used in the different component combinations. The Cement Board MD Finish System incorporates an exterior grade cement board fixed to vertical batons and is ideal where a cavity system is called for without the need for exterior insulation. Commonly applied over timber or steel framed substrates incorporating an approved sheathing and breather membrane in new build residential and low-rise commercial projects.

Benefits:

  • Crack resistance. Location and frequency of movement joints is greatly reduced or even eliminated compared with that of traditional renders due to the high performance crack resistance of our systems.
  • Weatherability. Dryvit systems are formulated to provide the utmost in weather protection providing a resilient barrier against wind and water.
  • Durability. The combination of system components provides unsurpassed long-term durability meeting design requirements for use in virtually any location.
  • Aesthetics. Dryvit finishes are available in a wide array of textures in both standard and custom colours. The speciality finishes enable designers to replicate a variety of real stone or brick finishes from limestone to granite at a fraction of the cost.
  • Testing. Independently certified by BBA and other international test bodies. Dryvit manufacturing plants are ISO 9001: 2000 certified, demonstrating the highest standards of quality and consistency.

General information
Finish

Drytex

Mineral based finish over-coated with Demandit or Silstar.

Drytex wood

Polymer modified cementitious render and acrylic stain used to create a wood effect.

FDPMR

Acrylic textured finish.

HDP

Silicone based technology textured finish.

PMRB

Acrylic textured finish.

Uniclass 2015
Multicoat render systems (Ss_25_45_70_55)Primary
Specification data - Multicoat render systems
Product Reference

Cement Board MD Finish System™

Finish

Drytex

Mineral based finish over-coated with Demandit or Silstar.

Drytex wood

Polymer modified cementitious render and acrylic stain used to create a wood effect.

FDPMR

Acrylic textured finish.

HDP

Silicone based technology textured finish.

PMRB

Acrylic textured finish.

Texture

Freestyle

Lymestone

Quarzputz 2 mm aggregate

Drytex, FDPMR, HDP and PMRB finishes.

Sandblast 1 mm aggregate

Drytex and PMRB finishes.– PMRB finish.

Sandpebble 1.5 mm aggregate

Drytex, FDPMR, HDP and PMRB finishes.

Sandpebble fine 1 mm aggregate

HDP, FDPMR and PMRB finishes.

Colour

Refer to standard colour range for details and insert requirements.

Accessories

Not required

Bellcast bead

Corner bead

Demandit

Interior and exterior acrylic PMR coating in standard and custom colours, insert requirements.

Dryvit detail mesh

Applied diagonally to corners of openings between passes of Stucco Build.

Expansion joint

To align with structural movement joints.External corner bead.

Feature beads

Silstar

Silicone façade paint, insert colour requirements.

Stop bead

Standard product features

Air gap:

Pre-treated vertical timber battens used to form drainage cavity and as support for cement board – type dependent on primary structure.

Breather membrane

Dryvit Backstop® NT

Base coat and reinforcement coat:

Genesis acylic-modified, fibre reinforced adhesive, base, texture and levelling coat and standard mesh - glass fibre reinforcing mesh. Thickness: 3–4 mm.

Primer:

Color Prime™.

Product Options

Finish:

  • Drytex: Dry cement based mixtures enriched with synthetic resins which after being mixed with water give a high quality textured finish. Drytex finishes are white with the final fade resistant colour achieved by over-coating with either Demandit or Silstar façade paints.
  • FDPMR: Premixed 100% acrylic finish containing DPR and PMR technology as well as a film forming accelerator for improved resistance to wash off.
  • HDP: Proprietary, silicone based technology textured finish which promotes hydrophobicity enhancing reduced dirt pick up properties.
  • PMRB: Aggregate textured 100% acrylic-based proven mildew (PMR) and dirt pick resistance (DPR) finish.

Accessories:

  • Dryvit drainage strip.
  • Expansion/ movement joints: Will be required to reflect such joints in the existing wall plus any movement joints to reduce the risk of cracking in the render finish. Consult with Dryvit for recommendations for type and location.
  • Demandit is a 100% acrylic coating which is offered in a variety of standard colours and custom colours. Demandit contains the most effective ingredients available to help resist mould and mildew growth (PMR).
  • Silstar is a façade paint produced on the basis of silicone and acrylic resins. The coat created following the use of Silstar is characterized by a high degree of vapour permeability. It fully protects the surface from atmospheric conditions as well as development of micro-organisms after complete drying and gives the surface a pleasant appearance.

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