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Sikkens Woodcare

Cetol HLS

A low to medium-build, solvent borne, semi-transparent woodstain for use on exterior softwood and hardwood substrates on components subject to high levels of wear and abrasion. Cetol HLS is applied as a base stain prior to the application of a higher build finish such as Cetol 7 on smooth planed exterior joinery. One coat of base stain will be applied by Phillips Joinery Ltd to your product, as standard.

Preparation for Cetol 7

Denib the product using a fine nylon abrasive pad or fine grade wet or dry silicon carbide abrasive paper, in the direction of the grain. Do not break through the surface coating. Remove all dust.

Cetol 7 – Coating system

Two coats onto a base stain of Cetol HLS.


Translucent semi-gloss

Drying time

Touch dry: 4 hours
Recoatable: 16 hours
Drying times are dependent upon absorption and drying conditions. Minimum recommended application temperature 5oC. At low temperatures and/or conditions of high relative humidity, drying periods will be extended.

Product Application

Ensure product is thoroughly stirred before and during application, otherwise sheen and colour variations may be experienced. Cetol Filter 7 is supplied ready for use. Do not thin. For best results use a good quality, long haired soft bristle brush.

The product should be applied in a full flowing coat, laying off in the direction of the grain, using a minimum number of brush strokes necessary to produce an acceptable finish. Overbrushing will reduce the protection.

Do not apply if there is a risk of rain, or when air/substrate temperatures are below 5oC or above 30oC during application or drying periods. Protect from frost and rain until dry. Failure to meet these requirements may adversely affect the drying, visual quality and durability of the finish. Two coats should be applied, allowing a minimum of 16 hours drying time between coats.

Maintenance of coatings

The period between maintenance applications will vary and is dependent upon the degree of exposure, elevation, design of the component and original application. A lightening in colour and reduction in sheen as the coating erodes, and a loss of water repellency indicate the need for maintenance.

Any loose, flaking coating should be removed by use of a scraper and abrasive paper. Any other loose material should be removed using a stiff (non-metallic) bristle brush. Any mould and algal growth must be removed using a suitable fungicide/algicide. Wash surfaces with water and mild detergent to clean the surface. Rinse surface and allow to completely dry. This should be done immediately prior to coatings.

Coatings in poor condition should be completely removed. If excessive weathering has occurred giving exposed timber a grey appearance, the surface must be thoroughly sanded back to clean, bright timber and then treated as new timber, with Sikkens HLS being applied first.