Johnstones Trade
Stormshield Flexible Undercoat Brilliant White 2.5L

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Retains flexibility, premium quality, matt finish for exterior use on woodwork and suitably primed metal surfaces.
Stormshield Flexible Undercoat Brilliant White

In detail

Johnstone's Trade Stormshield Flexible Undercoat is a solvent-based, combined primer and undercoat for exterior use on wood and suitably primed metal surfaces. 

It is microporous, allowing it to flex and breathe with the surface. 8 years expected life is provided when used as part of a system with either Stormshield Flexible Gloss or Satin. 

Application is by brush with coverage up to 13sq/m per litre. 

Recoatable between 16-24 hours.

Application Methods
Up to 13sq/m per litre 
VOC level
Not Recommended 
12-24 hours 
Suitable for...
Exterior use 
Up to 8 years 
Brilliant White 
Colour type
Brush cleaner or White spirit 

* Colours on screen may vary from actual paint

Available colours

Johnstones Trade Stormshield Flexible Undercoat Brilliant White is available in 1 colours from the Johnstones Trade Colour Cards.

    Browse colours


    Always ask your client to try their colour choice on the wall first. Colour cards and emulsion sample pots are available at your local Brewers or at

    Additional information

    Surface Preparation

    All surfaces to be painted should be clean, dry and free from loose and flaking material.

    To obtain maximum performance from this microporous product, old paint and varnish should be completely removed.

    Treat bare wood surfaces with Johnstones Woodworks Universal Primer. For bare timber, apply one coat of Johnstones Flexible Primer Undercoat followed by two coats of Johnstones Flexible Gloss or Satin.

    Prime bare metal with an appropriate metal primer.

    Rub down previously painted surfaces with fine waterproof abrasive paper and rinse thoroughly. Avoid the inhalation of dust. Wear a suitable face mask if dry sanding.

    Special precautions should be taken during surface preparation of pre 1960s paint surfaces over wood and metal as they main contain harmful lead.


    • Stir well before use.
    • Easy to apply by brush.

    Clearing Up

    Remove as much product as possible from application equipment before cleaning. Replace lid firmly.

    Clean equipment immediately after use with White Spirit or Turpentine Substitute.

    Do not empty product into drains or watercourses.