Dulux Trade Weathershield Aquatech Preservative Basecoat+ (BP)

Formulation

Water-based

Pack sizes

1L, 2.5L

A water-based timber preservative for use on new and bare wood, providing excellent protection against blue stain, decay fungi and UV rays. It produces a sound base for Weathershield Aquatech Woodstain and Weathershield Aquatech Opaque. Smooth wood: 4-5m² / litre / coat (2 even coats). Allow the previous coat to soak in before applying the next. Drying time - up to 24 hours.

Application information

Coverage

5m² per litre

Touch dry

2 hours dependent upon temperature / humidity

Recoatable

2 even coats. Allow the previous cost to soak in before applying the next. Drying time- -up to 24 hours

Thinning:

This product should not be thinned.

Key benefits

• Preserves, penetrates and seals.
• Quick-drying - recoatable in 2 hours.
• Protects against rot and UV rays.
• Provides a sound base for Weathershield Aquatech Woodstain and Weathershield Aquatech Opaque.
• Suitable for exterior use only.

System information

Mix thoroughly by shaking the container before use.

Pour out a sufficient amount of basecoat for the job into a suitable container. Surfaces must be sound, clean and dry before treating.

Use pre-treated timber for wood in ground contact situations.

Remove all loose and defective coatings, if necessary stripping back to bare wood.

Where the surface has been previously painted or stained, it will be necessary to strip back to bare wood.

Remove and treat any mould, algae, lichen or moss with *Weathershield Multi-Surface Fungicidal Wash.

Remove defective glazing material, clean the rebates and any loose or open joints.

Replace any rotten wood and troublesome knots with new preservative treated timber.

Thoroughly rub down all surfaces in the direction of the grain to remove any grey, weathered wood and then dust off (refer to your COSHH Assessment).

Prime all bare wood with 2 coats of Weathershield Aquatech Preservative Basecoat+ (BP) including any new or bare replacement beading. Excess basecoat should be wiped off surrounding paintwork before it dries.

Fill any surface defects, open joints etc. and replace any missing glazing material. Do not use linseed oil putty for glazing (or making good) with natural wood finishes, use external beads set in an appropriate non-setting mastic or a special glazing compound. When using Weathershield Aquatech Opaque, treat any knots and resinous areas by removing resin and applying a thin coat of an appropriate knotting solution, in order to help prevent discolouration. The normal finishing process is 2 coats of Weathershield Aquatech Woodstain or Weathershield Aquatech Opaque, as appropriate.

New joinery is often factory primed using a stain basecoat (also called a dual-purpose primer). These materials quickly erode when left exposed and may need to be re-primed.

When treating timber that has been pressure impregnated with preservative ensure that the surface is completely dry.

The use of silicone sealants can cause “cissing” of this product.

Do not use on resinous wood or woodwork with a history of blistering. The maximum benefits of this system will only be realised when used as directed above on good quality timber that conforms to BS EN 942: 2007, in conjunction with good component design.