- 1 Product description
- 1.1 Typical use of Jota EP Mastic 66
- 1.2 Recommended film thickness per coat
Jota EP Mastic 66 is a two component polyamine cured epoxy mastic coating. It is a surface product. Specially designed for areas where optimum surface preparation is not possible or desired. Can be used as primer or mid coat in atmospheric and immersed environments. Suitable for properly prepared carbon steel and aged coating surfaces.
Typical use of Jota EP Mastic 66
Remembered for general structural steel.
Black, grey, red
Property Test/Standard Description
Solids by volume ISO 3233 52 ± 2 %
Gloss level (60o) ISO 2813 matt (0-35)
Flash point ISO 3679 Method 1 25oC
VOC-Solvent Emission Directive SED (1999/13/EC) 324 g/kg
The provided data is typical for factory produced products, subject to slight varitation depending on colour.
All data is valid for mixed paint
Gloss level : According to Jotun Performance Coatings’ definition.
Recommended film thickness per coat
Film thickness and spreading rate Minimum Maximum Typical
Dry film thickness 100µm 150µm 100µm
Wet film thickness 195µm 290µm 195µm
Theoretical spreading rate 5,2m2/l 3,4m2/l 5,2m2/l
To secure lasting adhesion to the subsequent product all surfaces shall be clean, dry and free from any contamination.
Surface preparation summary
Substrate Minimum Recommended
Carbon steel St 2 (ISO 8501 – 1) Sa 21/2 (ISO 8501-1)
Shop primed steel Clean, dry and undamaged shop Sa 2 (ISO 8501-1)
Primer (ISO 12944-4 6.1)
Coated surfaces Clean, dry and undamaged Clean, dry and undamaged
Compatible coating compatible coating
(ISO 12944-4 6.1) (ISO 12944-4 6.1)
The product can be applied by
Spray : Use airless spray.
Brush : May be used. Care must be taken to achieved the specified dry film thickness
Roller : May be used. However when using roller application care must be taken to apply sufficient material in order to achieve the specified dry film thickness.
Product mixing ratio (by volume)
Jota EP Mastic 66 Comp A 6 part(s)
Jota EP Mastic 66 Comp B 1 part(s)
Dry and curing time
Substrate temperature 10 oC 23 oC 40 oC
Surface (touch) dry 5h 2.5h 1h
Walk-on-dry 16h 8h 3.5h
Dried to over coat, minimum 16h 8h 4.5h
Dried/cured for service 14d 7d 3d
Drying and curing times are determined under controlled temperatures and relative humidity below 85%, and within the DFT range of the product.
Surface (touch) dry : The state of drying when slight pressure with a finger does not leave an imprint or reveal tackiness. Dry sand sprinkled on the surface can be brushed off without sticking to or causing damage to the surface.
Walk-on-dry : Minimum time before the coating can tolerate normal foot traffic without permanent marks, imprints or other physical damage.
Dry to over coat, minimum : The shortest time allowed before the next coat can be applied.
Dried/cured for service : Minimum time before the coating can be permanently exposed to the intended environment/medium.
Induction time and Pot life
Paint temperature 23oC
Pot life 6h
Temperature Continuous Peak
Dry, atmospheric 90oC 90oC
Immersed, sea water 50OC 60OC
Peak temperature duration max.1 hour.
The themperatures listed relate to retention of protective properties may suffer at these temperatures.
Note that the coating will be resistant to various immersion temperatures depending on the specific chemical and whether immersion is constant or intermitent. Heat resistance is influenced by the total coating system. If used as part of a system, ensure all coatings in the system have similar heat resistance.
Depending on the actual exposure of the coating system, various primers and topcoats can be used in combination with this product. Some examples are shown below. Contact Jotun for specific system recommendation.
Previous coat : epoxy shop primer, inorganic zinc silicate shop primer, epoxy, epoxy mastic, inorganic zinc silicate
Subsequent coat : polyurethane, epoxy.
Volume (litres) Size of containers (litres)
Jota EP Mastic 66 Comp A 17.1/4.3 20/5
Jota EP Mastic 66 Comp B 2.9/0.7 3/1
The volume stated is for factory made colours. Note that local variants in pack size and filled volumes can vary due to local regulations.
The product must be stored in accordance with national regulations. Keep the container in a dry, cool, well ventilated space and away from sources of heat ignition. Containers must be kept tightly closed. Handle with care.
Shelf life at 23oC
Jota EP Mastic 66 Comp A 48 month(s)
Jota EP Mastic 66 Comp A 48 month(s)
In some markets commercial shelf life can be dictated shorter by local legislation. The above is minimum shelf life, thereafter the paint quality is subject to re-inspection.
This product is for professional use only. The applicators and operators shall be trained, experienced and have the capability and equipment to mix/stir and apply the coatings correctly and according to Jotun’s techical documentation. Applicators and operators shall use appropriate persional protection equipment when using this product. This guideline is given based on the current knowledge of the product. Any suggested deviation to suit the site conditions shall be forwarded to the responsible Jotun representative for approval before commencing the work.
Health and safety
Please observe the precautionary notices displayed on the container. Use under well ventilated conditions. Do not inhale spray mist.Avoid skin contact.Spillage on the skin should immediately be removed with suitable cleaser, soap and water. Eyes should be well flushed with water and medical attention sought immediately.
When applicable, products primarily meant for use as primers or antifoulings may have slight colour variations from batch to batch. Such products may fade and chalk when exposed to sunlight and weathering.
The information in this document is given to the best of Jotun’s knowlege, based on laboratory testing and pracial experience. Jotun’s products are considered as semi-finished goods and as such, products are often used under conditions beyond Jotun’s control.Jotun cannot guarantee anything but the quality of the product itself. Minor productt variations may be implemented in order to comply with local requirements.Jotun reserves the right to change the given data without further notice.
Users should always consult Jotun for specific guidance on the general suitability of this product for their needs and specific applicaton practices
If there is any inconsistency between different language issues of thi document, the English (United Kingdom) version will prevail.
KIM LOAN CONSTRUCTION TRADING SERVICE CO.,LTD
We specialize in manufacturing, distributing and applying epoxy paints
Email : email@example.com
Hotline : 028.22007114 – 028.22009114