Mortar Specialties

Cement Based Mortar

Monneli Dashbond STR

Superior Quality Spatter Dash Bond Coating

DASHBOND STR is specially formulated for application on fair face concrete containing micro-silica and on AAC (Autoclaved Aerated Concrete) blocks, without a need to hack the surface.
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Technical Information
Product Description

A cement based premixed product with exceptional performance and strong bond with polystyrene (insulation board, structural block and on masonry) which does not require multiple coats.

DASHBOND STR can also be applied directly on smooth concrete walls and ceiling (without opting to roughen the surface by hacking it or even if the concrete contains micro-silica) to serve as a rough scratch coat before applying the cement plaster.

DASHBOND STR is suitable as a base coat on precast, cement block, and conventional buildings.

  • High quality premixed spatter dash bond coat
  • Water resistant
  • Provides a hard, durable single coat over EPS exterior walls
  • Can be applied directly on EPS foams and CMU block
  • For exterior and interior use
  • Resistant to mold and mildew growth
  • Excellent workability and easy to use
  • High strength and bonding properties
  • Very good adhesion to concrete which contains micro-silica
Compiliance Standard
  • ASTM C 926, C932 & C 897
  • BS 4551 Part 2, 5262 & 5492
Packaging, Coverage / Consumption


DASHBOND STR is supplied in 25 and 50kg bags.



Up to 20 m2 per 50kg / 1.7 mm depending on the method of application and surface condition.

Shelf Life & Storage


Store in dry covered place in the original closed bags. In these conditions, the product shelf life is 12 months from production date.

Technical Properties
Appearance  Powder
Color  Grey
Density  1.8 kg/L 
Compressive strength at 28 days (ASTM C579)  25 N / mm² 
Flexural strength at 28 days (ASTM 580) 7 N / mm²
Chloride content Nil
Inflammability No
Toxicity Non-toxic
Working time 50 minutes
All values are subject to 5-10 % tolerance
Application Information
Instructions for use

Surface preparation

Remove dust, loose particles, grease and traces of foreign materials which may affect the adhesion.

Remove all traces of curing compound films and shuttering oil. Do not use paint remover or solvent to clean the surface.

Moisten the concrete surface or the AAC Block wall with clean water before applying DASHBOND STR. Running water on the surface should be allowed to drain prior to application.

Repair damage, dents and voids in the EPS substrate with an appropriate expanded insulation prior to applying DASHBOND STR. Do not attempt to make repairs with DASHBOND STR or anything other than expanded insulation.


Add the content of DASHBOND STR bag into a container of 10.5-11 Liters of clean water. Mix until a uniform, lump free consisting mix is achieved.

For mixing process, a slow speed drill (200 -300 rpm) fitted with a suitable paddle is recommended. Let the composition stands for nearly 5 minutes and remix again.


Apply the mixture using a suitable spraying unit or with Tyrolean machine manually till you reach the required thickness (2 - 3 mm).


DASHBOND STR consists mainly of Portland cement, special high strength hydraulic binders, aggregate and special chemical additives to achieve a high strength adhesion with water resistance and crack free coat and can be used over an approved drainage and ventilation cavity, cement-based breathable mineral plasters, alkali resistant fibre-glass mesh and assorted PVC flashings and trims.


The sprayed coat should be cured for a minimum of 2 days by keeping the entire sprayed area wet all day.


Tools and equipment should be cleaned with water immediately after use. Hardened materials should be mechanically removed.


  • In case of application in summer season, it is strongly recommended to spray the concrete walls one hour before applying DASHBOND STR in order to reduce surface temperature.
  • Do not apply DASHBOND STR to substrates that are below 0°C or that are wet, frozen of contain frost.
Additional Information
Health & Safety

DASHBOND STR is a cement-based product.


During application, wear appropriate protective clothing, goggles, gloves and respiratory equipment if necessary.


In case of contact with skin, rinse with water and again wash thoroughly with soap and water. In case of contact with eyes, rinse with plenty of water and seek medical advice accordingly.


If ingested, obtain medical attention immediately. Do not induce vomiting.

Important note

The information in this Technical Data Sheet is based on Colmef Monneli’s experience. Colmef Monneli does not accept any liability arising from the use of its products as it has no direct or continuous control over where or how its products are applied. All Colmef Monneli’s Data Sheets are updates on regular basis. It is the user’s responsibility to obtain the latest version.

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