Hesse COOL-NATURA HE 64500

- genuinely feels like real natural wood
- is as matt as bare wood, even from every viewing angle
- meets DIN 68861 1c
- VOC content < 3 %
- excellent scratch resistance
- 7 % proportion of renewable raw materials
Our COOL-NATURA is a fast-drying, light fast 1C HYDRO Natural wood effect lacquer. Its special gloss level and bare wood feel make it difficult to distinguish the coated surface from that of bare wood. COOL-NATURA can be used on all European woods without any problems, even on bleached surfaces. The finish displays good chemical and mechanical resistance. The high proportion of renewable raw materials and a VOC content of < 3 % mean that it is also suitable for use in sustainable and “green building” projects.
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  • Description
  • Information on use
  • Sample process
  • Safety Data Sheets / Certificates

Fields of application

COOL-NATURA can be used on all European woods in the complete field of interior fittings, including on furniture, doors, wall and ceiling panelling and other surfaces subject to normal to higher demands. It is also suitable for coating children’s toys.

Technical specifications

Appearance colourless
Density series kg/l 1.019
Flow time (+/- 15 %) 45 s / DIN 53211 - 4 mm
Form of delivery fluid
Non-volatile content series % 27
Proportion of renewable raw materials % 6.4
VOC EU % 2.52 %
Number of coats (max) 2
Amount per layer (minimum) 70 g/m²
Amount per layer (max) 90 g/m²
Total application volume 180 g/m²

Information on use

Drying 2 h / 20°C
Stackable after at least 16 h / 20 °C room temperature with sufficient air circulation.
Load bearing after 48 h / 20°C
Surface preparation Clean, well-seasoned wood, or clean, suitable MDF or plywood base, free from oil, grease, wax and silicones. Sanded as prescribed and free from sanding dust. The effect is especially distinctive after the pores are brushed out vigorously.
Substrate sanding grits from-to 120 - 220
Lacquer sanding (grit) from - to 280 - 320
Finishing After light surface sanding, it can be top coated using the same product or with a product like COOL-TOP HE 6509x(gloss level).
To further increase its resistance, COOL-NATURA can also be top coated using 2C HYDRO systems, such as HYDRO-PU PRIMO HDE 5400x(gloss level) or PURA-NATURA HDE 54451.
Comments on sanding The quality and uniformity of the wood sanding are crucial to the final surface finish. Ensure uniformity of the surface and edge sanding! Remove dust properly after sanding.
Yield per coat 11 - 15 m²/l

The spreading rate is heavily dependent on the type of application. The specifications relate to a liter of ready-for-use product, if necessary including hardener and thinner.
Working Temperature Range 18 - 22 °C
Storage temperature 10 - 30 °C
conditions of transport 10 - 30 °C
Processing instructions Please stir this material well before use!
COOL-NATURA can as necessary be diluted with up to 5 % water directly before processing.
One or two coats of COOL-NATURA should be applied onto appropriately prepared wood substrates.
The COOL-NATURA lacquer layer should not be sanded through or otherwise damaged when finishing with other HYDRO material (risk of stain formation).
Please check the appearance and feel of the finished surface based on a trial coating on the original substrate.
Particular instructions “A risk assessment was undertaken according to Directive 2014/90/EU, Annex II, Section 3. This coating does not pose a physical risk to health nor a risk to the environment when hardened and dried.”
General instructions on workmanship When working with HYDRO materials, parts that come into contact with the material must be made from stainless steel. The moisture content should be between 8 - 12 %. Do not apply or dry HYDRO lacquers at material or room temperatures below 18 °C. The ideal humidity for application lies between 55 and 65 %. During the lacquering process, a humidity level that is too low leads to surface defects (such as shrink cracks, etc.). Excessive humidity during the drying phase may drastically lengthen the drying time! In order to avoid adhesion problems, please sand the lacquered surfaces freshly before coating and apply lacquer to the sanded surfaces as soon as possible. When applied to foils, etc., please use a sample coating on the respective substrate to check the adhesion! The ideal complete hardening of lacquered surfaces that have been flashed off is reached at temperatures over 20 °C up to no more than 40 °C. Adequate, draft-free air exchange must be assured. The complete hardening of the lacquer will be reached after one week of proper storage (at least 20 °C room temperature). Woods containing large amounts of natural oils, such as teak, can negatively influence adhesion under certain circumstances. Water-soluble wood ingredients such those in ash and tannins in woods such as oak may cause colour changes and discolourations in the coating. We recommend that you always conduct a sample lacquering to evaluate the colour effect, adhesion and drying process under real conditions!

Solid oak
Wood sanding: 120 - 150 grit
Basecoat: 1 x 70 - 80 g/m² COOL-NATURA HE 64500
Drying: at least 2 h / 20 °C room temperature with sufficient air circulation
Intermediate sanding: 400 - 600 grit
Top coat: 1 x 70 - 80 g/m² COOL-NATURA HE 64500
Drying: at least 16 h / 20 °C room temperature with sufficient air circulation

Material Safety Data Sheets


Our technical information is continually adapted to keep up to date with the latest technology and statutory regulations. The latest version is always available online at www.hesse-lignal.de or talk to your local account manager. This information is for advice and is based on the best knowledge available and careful research in line with the current state of the art. This information cannot be held as legally binding. We also refer you to our terms and conditions of business. Safety data sheet is provided in accordance with EC regulation no. 1907/2006.