Jotun Jotamastic 90 Aluminium WG is a two component winter grade polyamine cured epoxy mastic coating. It is a surface tolerant, abrasion resistant, high solids, high build product. This product is the winter grade version of Jotamastic 90 Aluminium to aid application in lower temperatures (from -5 °C) and to provide faster drying and curing times.

This version of Jotun Jotamastic 90 WG is aluminium pigmented for improved barrier effect. Specially designed for areas where optimum surface preparation is not possible or required.

Jotun Jotamastic 90 Aluminium WG provides long lasting protection in environments with high corrosivity and can be used as primer, mid coat, finish coat or as single coat system in atmospheric and immersed environments. Suitable for properly prepared carbon steel, galvanised steel, stainless steel, aluminium, concrete and a range of aged coating surfaces.

Primarily designed for maintenance and repair for general use. It can also be used in marine environments for outside hulls, exterior and interior areas.

Jotun Jotamastic 90 Aluminium WG is recommended as a protective coating for offshore environments, including splash zones, refineries, power plants, bridges, buildings, mining equipment and general structural steel.

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• Features & Benefits
• Approvals & Certificates
• Product Data
• Film Thickness
• Surface Preparation
• Application
• Drying & Curing Time
• Heat Resistance
• Product Compatibility
• Storage & Shelf Life
• Caution
• Health & Safety

Features & Benefits

• Winter grade version of Jotamastic 90 Aluminium to aid application in lower temperatures (from -5 °C) and to provide faster drying and curing times
• Aluminium pigmented for improved barrier effect
• Two component polyamine cured epoxy mastic coating
• Surface tolerant, abrasion resistant, high solids, high build product
• Specially designed for areas where optimum surface preparation is not possible or required
• Provides long lasting protection in environments with high corrosivity
• Can be used as primer, mid coat, finish coat or as single coat system in atmospheric and immersed environments
• Touch dry in 3.5 hours at 23 °C
• Approved for PSPC for Crude Oil Tanks according to IMO Res. MSC 288(87) NORSOK System 1, Rev.5
• Suitable for properly prepared carbon steel, galvanised steel, stainless steel, aluminium, concrete and a range of aged coating surfaces
• Primarily designed for maintenance and repair for general use
• It can also be used in marine environments for outside hulls, exterior and interior areas
• Recommended as a protective coating for offshore environments, including splash zones, refineries, power plants, bridges, buildings, mining equipment and general structural steel

Approvals & Certificates

• Approved for PSPC for Crude Oil Tanks according to IMO Res. MSC 288(87)
• NORSOK System 1, Rev.5
• Grain, Newcastle Occupational Health
• When used as part of an approved scheme, this material has the following certification:
  • Low Flame Spread in accordance with EU Directive for Marine Equipment
  • Approved in accordance with parts 5 and 2 of Annex 1 of IMO 2010 FTP Code, or Parts 5 and 2 of Annex 1 of IMO FTPC when in compliance with IMO 2010 FTP Code Ch. 8

Additional certificates and approvals may be available on request.

Product Data

The provided data is typical for factory produced products, subject to slight variation depending on colour.

All data is valid for mixed paint.

Small colour variations may occur when changing between the two curing agents. If exposed to weathering without topcoat, the Wintergrade (WG) version will yellow at a faster rate than the same colour in Standard grade.

Film Thickness

Surface Preparation

To secure lasting adhesion to the subsequent product all surfaces shall be clean, dry and free from any contamination.

Please refer to the Application Guide (AG) for full details.

Application

Application Methods:

• Spray: Use airless spray
• Brush: Use a suitable brush. Care must be taken to achieve the specified dry film thickness
• Roller: May be used for small areas. Not recommended for first primer coat. Care must be taken to achieve the specified dry film thickness

Please refer to the Application Guide (AG) for full details.

Product Mixing:

• Jotamastic 90 Alu Comp A - 3.5 part
• Jotamastic 90 Winter Grade Comp B - 1 part

Pot Life:

• 45 minutes @ 23°C

Thinner/Cleaning Solvent:

• Thinner: Jotun Thinner No. 17

Guiding Data for Airless Spray:

• Nozzle tip (inch/1000): 19-25
• Pressure at nozzle (minimum): 150 bar/2100 psi

Drying & Curing Time

• For maximum overcoating intervals, refer to the Application Guide (AG) for this product
• Drying and curing times are determined under controlled temperatures and relative humidity below 85 %, and at average of the DFT range for the product
• Surface (touch) dry: The state of drying when slight pressure with a finger does not leave an imprint or reveal tackiness
• 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 recommended shortest time 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

Heat Resistance

Peak temperature duration max. 1 hour.

The temperatures listed relate to retention of protective properties. Aesthetic 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 intermittent. 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.

Product Compatibility

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.

Previous Coat:

• Epoxy shop primer, inorganic zinc silicate shop primer, zinc epoxy, epoxy, epoxy mastic, inorganic zinc silicate

Subsequent coat:

• Polyurethane, polysiloxane, epoxy, acrylic, vinyl epoxy

Please contact Rawlins Paints' Technical Support Team on 0113 2455450 (option 2) or send a message to [email protected] for more information.

Storage & Shelf Life

Shelf life at 23 °C

• Jotamastic 90 Alu Comp A - 48 Months
• Jotamastic 90 Winter Grade Comp B - 24 Months

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.

Caution

• 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 technical documentation
• Applicators and operators shall use appropriate personal 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 & 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 cleanser, soap and water
• Eyes should be well flushed with water and medical attention sought immediately

Please contact Rawlins Paints' Technical Support Team on 0113 2455450 (option 2) or send a message to [email protected] for more information.