Jotun Hardtop Optima

Part A: UN1263 (Class: 3, Pk Grp: III), Part B: Non Hazardous
A two-pack polysiloxane topcoat with excellent gloss and colour retention. Network Rail/Railtrack approved. Highways Approved Item No. 185.
Available in 5 Litres and 20 Litres. Tintable to many BS4800 and RAL colours - please call
From £219.11 £182.59
In stock
Only %1 left
Product Description

Jotun Hardtop Optima is a gloss and colour retentive topcoat which is chemical and water resistant and ideal in marine and offshore environments.

This product is part of the Network Rail/Railtrack RT98 Systems M20, M21, M24, N1, N2, N4 and N9

Jotun Hardtop Optima is a two-pack polysiloxane topcoat with excellent gloss and colour retention. This versatile product is fully recoatable at any stage of curing and is extremely flexible, making it great for use in external environments.

Best Uses

Use Jotun Hardtop Optima as a topcoat over an epoxy system where a durable, high grade finish is required in aggressive atmospheric exposure. Highways Item No.185. When dry, Optima offers excellent protective properties and abrasion resistance too.


Hardtop Optima has been specifically design for application using an airless spray, like many of the other Jotun products, in order to achieve the desired finish. Brush can be used in small areas and when a strip coating is required, however it must be said that extra care should be taken when you are trying to achieve the specified dry film thickness. Hardtop Optima has a theoretical coverage rate of 10.1m2 per litre.

Surface and Environment

Hardtop Optima from Jotun is a paint coating designed for application over a variety of different epoxy coatings. Regardless of the surface, so long as there has been a previous coating of a high performance, epoxy coating. Specifically manufactured for use in outdoor, strong atmospheric conditions, Jotun Hardtop Optima incorporates a high gloss finish and gloss retention, with chemical resistance and water resistance properties too.

Please get in touch for more details regarding the Jotun Hardtop Optima from Promain.

Technical Details


  • This product is part of the Network Rail/Railtrack RT98 Systems M20, M21, M24, N1, N2, N4 and N9
  • Certificate numbers XM92/M20-166, XM92/M20-168, XM92/M21-167, XM92/M24-169, XM92/M24-169, XM92/M24-170, N1-115, XN90/N2-089, XN90/N4-090 and XN90/N9/065
  • Highways Item No.185
  • Contributes to satisfying the following credit(s): Indoor Environmental Quality (IEQ) under LEED® 2009, Environmental Quality (EQ) and Materials and Resources (MR) under LEED® v4
  • Norsok M-501 System 1 (Pre Qualified)
  • Norsok M-501 System 2A
  • Norsok M-501 System 5A (Pre Qualified)
  • Norsok M-501 System 6A
  • Norsok M-501 System 6B

Technical Info

Components: Two Part
Type: Chemically curing polysiloxane resin based coating
Finish: High Gloss
Stock Colours: RAL 9010
Tintable: Yes. Please note, bespoke tints are non refundable / exchangable.
VOC Content: 215.0g per litre
Volume Solids: 76%
Suitable Substrates: Compatible previous coating
Application Method: Air Spray, Airless Spray, Brush or Roller
Theoretical Coverage: 12.7 - 7.6m2 per litre
Wet Film Thickness (WFT): 80 - 130 microns
Dry Film Thickness (DFT): 60 - 100 microns
Induction Time: -
Pot Life: 6 hours at 23°C
Touch Dry: 5 hours at 10°C
Overcoatable: 7 hours at 10°C
Fully Cured: 10 days at 10°C
Cleaner / Thinner: Jotun Thinner No. 7 and Jotun Thinner No. 17
Shelf Life: 48 months for Part A, 24 months for Part B
Packaging: Available in 5 Litres and 20 Litres

Related Products