Top sellers

Sikkens Cetol HLS Plus

New product

Sikkens Cetol HLS Plus: Low-build Wood Stain

Semi-transparent wood stain for exterior wood

Solvent based coating, for brush application

Low build base coat and wood stain in one. 

Resists UV, mould and algae, peeling and cracking

Seven semi-transparent shades 

Or choose a shade from the Sikkens Cetol Design Concept Colour Card 

More details

We can tint this product to your exact specification from any colour chart or sample. Enter your chosen colour in the box below and click CONFIRM COLOUR before adding the product to your basket. Need help? Call us on 01793 511537




- +

Product Info

Sikkens Cetol HLS Plus: Low-build Exterior Wood Stain

Sikkens Cetol HLS Plus is a low build wood stain to beautify and protect exterior wood in an attractive satin finish. The solvent based coating creates a translucent finish through which you can still see the wood grain. 

Cetol HLS Plus provides superior exterior timber protection. Protecting exterior wood from UV, weathering and moisture and with added microporous system to aid with moisture control. Furthermore, the Cetol HLS Plus will resist surface mould and algae as well as peeling and cracking. 

Good for use on soft woods, and on stable or semi-stable timber surfaces. Can be used on new softwood, hardwood, plywood, block board, particle board and on surfaces such as cladding, facias, architraves, timber frames, fences and sheds. 

Solvent based product is easy to apply by brush with the 3-coat system.Or can be used as a base coat in conjunction with Sikkens Cetol Filter 7 for optimum protection. 

Expected maintenance cycle: Re-coat every 2 years


Properties of the Sikkens Cetol HLS Plus:

- Translucent wood stain that shows the wood grain

- Solvent Based Coating

- Easy to use, 3 coat system, brush applied

- Can also be used as an adhesion base coat

- Great for use on exterior softwoods

- Attractive Satin Finish Wood Stain

- Excellent resistance to UV, mould and algae

- Good weather resistance

- Micro-porous and Water-Repellent

- Available in three semi-transparent colour ranges: Sikkens Standard, Classic Collection and Style Collection


Surface Preparation

Before proceeding with your coating system, ensure that the moisture content of the timber does not exceed 18%.

Ensure the timber surface is abraded, clean,and dry and is free from dust, dirt, wax and grease. Ensure to remove any existing surface mould and/or algae using a fungicidal solution.

Any resinous residues may be removed using a suitable solvent or methylated spirit. Knotting solution may be used to reduce extractive discolouration, however, knotting solutions are not always effective in 'sealing in' the resin.

Ensure all surface imperfections are fixed/rectified before proceeding with your coating system. 


Application of Sikkens Cetol HLS Plus onto New Woodwork or Timber

If applying to new woodwork, first take note of the timber species upon which you plan to apply. 

Where necessary, apply two coats of a good quality wood preserver on new softwood timber that requires extra substrate protection against fungal attack. 

Following this, apply a priming coat of the Cetol HLS Plus in your chosen semi-transparent colour. After the priming coat follow with 2 further coats of the Cetol HLS Plus.

Allow for 16 hours between coats. For best results, keep the interval between applications of the coats as short as possible.

Alternatively, for a more durable finish you can apply the Cetol HLS Plus as an adhesion base coat, followed by 2 further topcoats of the Sikkens Cetol Filter 7. 

Where possible, the first coat should be applied to all parts of the component prior to fixing. Apply in a well ventilated area.

Note: Discoloration of paint especially noticeable within light colours may occur over knots and resinous areas present in the wood. Particular attention with regards to preparation should be given to wood such as Oak, Teak, Cedar, Douglas Fir, Mahogany and Idigbo, etc., which contain oil and water-soluble tannin which may impair the drying, hardening or adhesion of surface coatings and discolour the finished surface.


Maintenance of Sikkens Cetol HLS Plus

For best results, it is recommended that the Sikkens Cetol HLS Plus is reapplied every 2 years.

When looking to maintain the coating, take note of the current condition of the finish. Then clean, degrease and sand to create a key. If excessive weathering has occurred leaving a grey appearance, the surface must be abraded back to clean bare timber before re-coating.

Repair any defects in the timber. If any colour defects have occurred, apply a primer coat of Cetol HLS or Cetol Filter 7 in the colour you first chose.

Allow to dry, and follow with one further coat of lighter Cetol HLS Plus. As with any semi-transparent colour, coating or stain, the more coats you apply the darker the shade becomes. Therefore it is recommended that in order to maintain the translucent appearance of the Cetol HLS Plus over a longer period, to use light colours 077 or 006 for maintenance applications.

For maintenance applications, the same drying times and application instructions are applicable.


Damaged and Decayed Timber

All damaged or decayed timber must be removed and replaced before any coatings application.

If looking to remove damaged/decayed timber, cut at least 25mm into sound timber.

When splicing in new sections of wood, consider whether the timber species' natural durability is sufficient. Ensure to thoroughly treat timbers, especially in any end grain sections and ensure all materials are fully dry before splicing in.

Secure with non-ferrous fixings and fill any surrounding voids with a good quality wood filler.-


Previously Coated Surfaces

De-nib using a fine grade nylon abrasive pad or a fine grade (P240 or finer) wet or dry silicon carbide abrasive paper, in the direction of the grain. Do not break through the surface coating. Remove all dust.

Where there is localised damage, or deterioration of the existing coating has occurred, the area should be thoroughly sanded back to a sound substrate and proceed with applying the three coats as with any new timber.


Further Notes:

Joinery should be glazed with a suitable sealant in accordance with section 4.2 of the Glass and Glazing Federation manual together with BS 8000-7 : 1990 Workmanship on Building Sites and BS 6262 : 1982.

Linseed oil putty, type II butyl mastics and metal casement putty are not recommended for use.

When choosing a semi-transparent wood stain shade for exterior timber, lighter colours of translucent products are always less durable due to the impact of UV damage.

We never recommend a 'clear' version of this product, as this will not offer adequate protection of exterior timber.

The final colour of a semi-transparent stain will always depend on the colour of the timber underneath, and the amount of coats applied. The more coats applied the darker and more solid the colour.

For best results, always do a test patch before applying to the whole area.


For more information please refer to the product data sheet.

Technical Data
Finish Satin
Application Brush
Solvent Based Yes
01.Drying Time (Touch Dry) 4-6 hours
03.Drying Time (Recoat) 18-24 hours
m2 / litre 10-14m2 per Litre
Colour Sikkens Standard, Classic Collection, Style Collection
Thinning Do Not Thin
Clean Up White Spirit

Sikkens Cetol Design Concept PDF

Sikkens Cetol Design Concept Colour Card and Product Guide

Download PDF
Product customization

We can tint this product to your exact specification from any colour chart or sample. If you know the reference please enter the code in the field below, click SAVE and add the product to your basket. We also have ideas to set the ball rolling in our Colour section where we have added a number of widely used colour ranges. Need help? Call us on 01793 511537

Enter your COLOUR REFERENCE in the box below:


* required fields


30 other products in the same category:


Compare 0