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Waterborne, Environmental Solution, Clear High-build Basecoat

Product Ref: AU0420/00-6 | Brand: Sayerlack

£53.94 inc. VAT RRP £53.04



Beautiful stylish results are important when coating furniture. The Sayerlack Hydroplus waterbased range can be used to produce finishes that are indistinguishable in quality, strength and chemical resistance as two-pack polyurethane finishes. Sayerlack is at the forefront of waterbased technology that is conscientious about the wellbeing of people and the environment. AU0420 is a one-pack, waterborne, high-build basecoat designed for interior joinery on turned parts, frames, assembled furniture, panels and stairs.

It has a high transparency, good wood reviving properties, high build and vertical hold, and excellent sanding. It's the ideal product for all those wooden components with a complex geometry and those that require extensive manual work such as turned parts and assembled furniture. It can be sprayed using a conventional gun, air mix system, airless system and electrostatic spray guns. Closed pore or semi-closed pore can be achieved in two coats and if a higher build is required, a third coat can be applied. It comes ready to use and can be thinned using water if necessary.


  • Good Transparency
  • High Build and Holds Vertically
  • Ready for Use
  • Ideal for Intricate Joinery
  • Can be used under Sayerlack Hydroplus Topcoats or Self-Sealers
Mixing Procedure:


Ready for use




Conventional Spray, Air Mix Spray, or Airless Spray




Maximum 80 - 160g/m²


Number of Coats:


Maximum 3


Drying Times @ 20°C


Dust Free

Touch Dry




1 Hour

2 Hours

24 Hours



Minimum 4 Hours




Minimum 2 Hours



Technical Info


29 ± 1

Gravity (kg/l):

1,040 ± 0,030

Viscosity @ 20°C:

White 10000 ± 2000 (Brookfield)

VOC Content:

40 g/l



For best results, we suggest preparing the surface using 240-320 grit stearate abrasives as they provide a higher efficiency than conventional. Ensure the surface is completely clean of dust and debris before coating.


Closed pore or semi-closed pore can be achieved with just 2 coats of 80-140 g/m² each with an interval of 2 hours in between, in good drying conditions and with air circulation (at 20°C and with 65% of relative humidity). Under these circumstances, it is sandable after 3-4 hours. Lower temperatures and higher relative humidity will incur a longer drying time. When a higher build is required, a third coat can be applied, but the waiting time is extended to at least 4 hours and sanding can take place after 6-8 hours.


AU0420 basecoat can be overcoated with any of the HYDROPLUS waterborne topcoats or self-sealers. AFL031 & AF0072.



It is important to understand when using a Waterbased Coatings to check whether your full system is appropriate. IWC are able to advise you on spray equipment and materials to achieve the perfect finish. Please click the contact us button for advice.


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COVID-19 Update 05/01/2021

Dear Customer,

Following the latest Government announcement, we wanted to let you know that we remain open for business as usual during the new lockdown. You can rest assured, we are holding large stocks of the majority of products to supply your requirements through this crisis and rise to the ever-changing challenges ahead.

As always the wellbeing of our customers, suppliers and colleagues is our number one priority, and we have ensured our site is COVID safe workplace.

We would like to thank you for your help and understanding during this challenging period and sincerely wish that the impact on our customers, their families and their businesses, is minimal.

Please do not hesitate to contact us for further information and support if you have any questions or concerns

Yours Sincerely,

IWC Team

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