Sikkens Cetol THB Plus - Translucent Semi-Gloss Exterior Wood Stain
Sikkens Cetol THB Plus is a solvent based semi-transparent wood stain for use on exterior timber. In an attractive semi-gloss finish, the transparent system highlights the natural beauty of the wood grain.
Protects timber form exterior conditions, Cetol THB has added flexibility which means the coating will resist cracking and peeling. The micro-porous and water repellent system also helps to control moisture.
Easy to apply by brush, Cetol THB Plus offers an easy to use 3-coat system and simple maintenance.
Can be used on both hardwoods or softwoods and is best for areas that do not experience medium to high traffic or the possibility of abrasion or resistance. Most suitable for less exposed areas or as an alternative coating to the Sikkens Cetol Filter 7.
Expected maintenance cycle: Re-coat every 2-3 years
Properties of the Sikkens Cetol THB Plus:
- Solvent based coating
- Semi-transparent wood stain
- Semi-Gloss Finish
- Good durability
- Resists cracking and peeling
- Micro-porous for moisture control
- Lasting Flexbility
- Water Repellent
- Easy to apply by brush
- Available in three semi-transparent colour ranges: Sikkens Standard, Classic Collection and Style Collection
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.
Application of Sikkens Cetol TBH Plus onto New Woodwork or Timber
Cetol THB Plus can be applied to new softwoods or hard woods, if applying to new timber first apply a priming coat of the TBH Plus in your chosen semi-transparent shade. This priming coat of Sikkens Cetol THB Plus should be thinned with 5-10% white spirit.
Following this, proceed with two finishing coats of the Sikkens Cetol THB Plus.
Allow for 16 hours between coats. For best results, keep the interval between applications of the coats as short as possible.
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 THB Plus
For best results, it is recommended that the Sikkens Cetol THB Plus system is reapplied every 2-3 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 and apply either one coat of Cetol HLS or Cetol THB. Follow this with a further coat of Cetol THB overall.
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 THB Plus over a longer period, to use light colours 003, 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 has occurred as a result of exposure of the factory coating for longer than 3 months affected areas should be thoroughly sanded back to a sound substrate.
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.