• Jotun Demidekk Ultimate Windows and Doors

Jotun Demidekk Ultimate Windows and Doors


We no longer stock this product, but can recommend Zinsser AllCoat Exterior Satin (Water Based) as a great alternative.



Jotun Demidekk Ultimate Windows and Doors is a high performance paint with excellent colour and gloss retention. This product is especially suited for planed woodworks such as windows, doors, window frames, gutters and other exterior trim. Jotun Demidekk Ultimate Windows and Doors contains film preservatives that inhibit growth of mildews.

Jotun Demidekk Ultimate Windows and Doors should be used together with Jotun Visir Primers, and is easy to apply, has good adhesion properties and excellent colour and gloss stability. It may be used on new woodwork and previously painted and stained woods as well as pressure impregnated wood. The product may also be used as a topcoat for plastic and metal objects if used with a suitable primer.

Features & Benefits

  • Tough, durable and beautiful
  • 12 year life expectancy
  • Excellent colour stability
  • Contains UV filters and fungicides
  • Environmentally friendly
  • Water based

Surface preparation
The substrate must be clean, sound and dry: For the best possible edge coverage, sand down sharp edges. Fresh wood left untreated for more than 4 weeks should be cleaned using a suitable cleaning agent and brushed with a wire brush. Vacuum and dip treated wood, as well as industrially applied substrates (containing wax or other water repellent additives) should be degreased with methylated spirit. Previously treated wood should be cleaned using a suitable cleaning agent. Sand glossy and hard surfaces or use a suitable cleaning agent. Remove loose paint/stain and wood fibres by wire brush or scraping.

Apply a suitable anti fungal treatment in accordance with the user instructions. Bare iron and nail heads to be primed with a suitable primer.


  • Bare softwood should be primed with Jotun Visir Clear Primer
  • Bare hardwood should be primed with a diluted coat (up to 20% with water) of Jotun Demidekk Ultimate Windows and Doors.

Jotun Visir primers are supposed to penetrate into the substrate, and should not be allowed to form a film on the surface. Apply 3-4 coats wet-on-wet to the end grains/cut surfaces.


  • New, planed woodwork: 3 x Jotun Demidekk Ultimate Windows and Doors.
  • Previously treated: 2 x Jotun Demidekk Ultimate Windows and Doors.

Ultimate, as its name suggests, delivers the definitive durable finish without compromising looks or the environment, which is why it is proving a popular choice with architects and specifiers requiring a high performing product.

Formulated for durability, this technically superb exterior wood stain boasts a maintenance cycle of 12 years, while ensuring the same integrity and lustre throughout its long life.

Its advanced waterborne system and exceptionally low VOC rating - the lowest of any stain available on the market today - means the impact on the environment is minimal, both immediate and over the long term. The ultra low VOC rating also makes Jotun Demidekk Ultimate one of the safest stains available; air quality is preserved ans incidents of eye and respiratory irritation, caused by exposure of fumes, is virtually non-existent.

Architects will appreciate the versatile colour palette, incorporating both traditional and contemporary hues and offering inspirational and dynamic colour choices. From subtle tones to bright and bold contemporary colours, the palette offers the ultimate in creative freedom.

Tough, durable and beautiful, Jotun Demidekk Ultimate is a natural choice for architects or anyone who wants lasting performance without compromise.

Product Details

Data sheet

Interior / Exterior Use
Water / Solvent Based
For Use On
Application Method
Brush, Roller, Spray
Standard / Ready Mixed
VOC Levels
Low (50-149 g/l)
Single, Two or Three Pack
Pack Size
Touch Dry
2 Hours

Customer agrees that before placing an Order, Customer has read and understood the most up to date Product Data Sheet for the Product. Where we have access to the Product Data Sheet from the manufacturer, we will either provide a copy on request, or include a link to the Product Data Sheet available on the manufacturer’s website. Customer further agrees that we have no liability for any errors or omissions contained within the Product Data Sheets. For more information, please see our Terms & Conditions of Sale.

questions Dizzyheights on 2020-04-15 14:17:35

What undercoat product should I use with this paint for painting over windows that have previously been painted? (Not new bare wood or stripped back to bare wood.) Thanks.


On previously painted surfaces no primer is required unless taken back to bare wood. Sand and apply 2-3 coats of Jotun Demidekk Ultimate as required.

Any bare areas spot prime with Jotun Visir Clear Primer.

questions Ralph Lewis on 2018-12-15 21:25:21

Can you send me a colour chart. Part of my daughters house is painted a dark shade of grey and I want to make sure I get the best match for rest of the house.


Unfortunately Jotun don’t produce colour cards for Demidekk Ultimate, however the product is available in most RAL, BS and NCS colours as well as the Demidekk Ultimate colours listed above.

questions Ian  on 2018-05-06 20:53:29

We need to paint over Jotun Butinox2 with a new paint system Can we apply Demidekk ultimate without any preparation as the original surface is gloss oil based paint and the new paint is water based how does it adhere to the old surface.


The substrate must be clean, sound and dry. Previously treated wood should be cleaned using a suitable cleaning agent. Remove loose paint/stain and wood fibres by wire brush or scraping. Sand glossy and hard surfaces then apply 2-3 coats of Jotun Demidekk Ultimate as required.

questions Rory on 2018-03-19 12:56:34

The technical data sheet for Demidekk Ultimate Windows & Doors says "Please be aware of linseed oil problems". So how is it used with fresh putty?


Jotun are more concerned about wood treatments containing linseed oil being repainted with the Demidekk product, not being in contact with putty. If its new timber then the wood stain should be applied first before fixing with putty. If colouring new putty its problematic because the linseed oil in the putty will repel water, including a water based woodstain. However if the putty is allowed to dry out and weather then there are no problems.


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