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White Stain Blocking Primer

    It’s easy to keep your paint job looking great by applying a base coat of stain blocking primer first, stopping tannins from wood coming through and staining your paint coating. Also blocks resin bleed and sap stains.

    Thorndown’s White Stain Blocking Primer is a high performing multi-surface primer primarily developed for tannin and stain blocking on timber surfaces.

    It works on all untreated softwood and hardwood timber surfaces, including pine, cedar, redwood, plywood, MDF and hardboard. And pressure treated timber, Accoya, and all painted surfaces of timber, masonry and plaster.

    This White Stain Blocking Primer is low in VOC and suitable for any application inside or outside.

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    It’s easy to keep your paint job looking great by applying a base coat of stain blocking primer first, stopping tannins from wood coming through and staining your paint coating.

    Thorndown’s White Stain Blocking Primer is a high performing multi-surface primer primarily developed for tannin and stain blocking on timber surfaces.

    It works on all untreated softwood and hardwood timber surfaces, including pine, cedar, redwood, plywood, MDF and hardboard. And pressure treated timber, Accoya, and all painted surfaces of timber, masonry and plaster.

    • Works on all untreated softwood and hardwood timber surfaces, including pine, cedar, redwood, plywood, MDF and hardboard. On oily hardwoods such as Iroko drying time will be greater
    • Works on pressure-treated timber and Accoya
    • Works on all painted surfaces of timber, masonry and plaster
    • Quick drying – Dry in 1 hour in fine weather cnly 1 coat is needed but you can apply a second on particularly resinous or troublesome wood, like very knotty woods or ones with high tannin bleed or leeching
    • Water-based primer, sealer and stain killer
    • Suitable for use on interior and exterior surfaces
    • Excellent adhesion to all timber and painted surfaces
    • Blocks stubborn and persistent stains including water stains, marker pens and more
    • Seals porous surfaces with excellent blocking of bleeding knots and sap streaks
    • Flash rust inhibitor prevents rust forming while drying
    • Fungicide film preservation stops the paint film degrading with mould
    • Low VOC
    • Coverage up to 12m2 per litre on smooth surfaces, 6m2 on rough surfaces
    • Moisture regulating microporous primer
    • Water wash up
    • Apply with brush (high quality synthetic recommended), roller or sprayer
    • Available in Clear, White, Grey and Black

    You can view and download a pdf of Stain Blocking Primer USPs here, download the full Stain Blocking Primer USP and Application Advice sheet, or visit Advice – Stain Blocking Primer for full product information and application advice.

    Weight N/A
    Dimensions N/A
    Tin size

    750 ml, 2.5 litre, 20 litre

    Colour

    Paint Type

    Delivery & Returns

    We aim to deliver next working day and always within 3 working days from receipt of order, however orders received before midday are usually sent on the same day and delivered direct to your door the next working day! Sample tins and craft packs are usually sent out by Royal Mail 48hr small parcel service as it has the lowest carbon footprint and environmental impact. Please contact the office on 01458 258588 or studio@thorndown.co.uk if you need it on a 24hr service. We use a trusted professional courier service for all other deliveries.

    Notes can be left with deliveries for directions to leave packages safely if you are not in and if you have any particularly urgent or specific instructions please contact us - we're confident we can sort it out.

    Please follow this link to visit the Delivery & Returns page for full information. Recommended final order and delivery dates around bank holidays and other events can be found on the homepage of the website and also notified during the basket and checkout process.

    Beauty is in the eye of the beholder and so is colour.

    We all see and interpret colour slightly differently to each other, as do our computer/phone/tablet screens, graphics software and printers that we use.

    The colour swatches you see on screen and on a printed colour chart are designed as a guide. The exact and final colour/hue that you see painted up at home will look slightly different depending on the material you paint it onto and the lighting. Although the paint colour will be exactly the same, the colour you see can be affected by light absorption or reflection of surfaces.

    For example, the hue of a colour painted onto new smooth timber can look slightly different if painted on rough sawn timber, as rough sawn timber absorbs more light giving less of a sheen so it can look more matt and darker. If you paint up a wooden planter the colour can look different depending on the lighting and where you put it in the garden.

    We always recommend trying a small sample tin of paint at home, where it's going to end up.

    Our colours are made precisely using a technically engineered colour system ensuring continuity of colour throughout batches. However, as with all paints it is good practice to make sure the final paint coating all comes out of the same paint tin.

    Paint Ranges

    Many colours are replicated throughout and across the paint ranges so that you can paint the same beautiful colours on your walls, windows and woodwork. Although they have been carefully created so that all colours are the same, there may be slight variations between the paint ranges, as the different finishes can create a slightly different hue.

    For instance, Wood Paint has a satin finish so the soft sheen makes light reflect differently than with the flat matt finish of Wall Paint, where sometimes colours can appear a little darker. Peelable Glass Paint is made entirely from the 100% recycled plastics resin that we use throughout our paint ranges and this unique paint can also affect the colour you see with the way the light reacts to the sheen of the coating, especially as light will be passing through the coloured coating on windows.

    Colour Charts

    Colour swatches on our paint colour charts have been painstakingly colour corrected so that the printed colour matches the painted colour as closely as possible. However, it is impossible to precisely match the colours for many reasons, as explained in full on our Colour Disclaimer.

    Colour Labels

    The printing process also means that although we have done all that we can to get colour labels as close to the dry paint colour coating as possible, printed colour labels won't always show you the exact paint colour.

    Liquid Paint

    The colour of liquid paint is lighter than that seen when the paint has dried and formed a coating.

    Each coat of paint that you apply will also make the coloured coating slightly darker. Colour swatches are based on two coats of paint that has dried into a coating.

    Samples

    We would always recommend trying a sample pot at home and in the area or on the object that you want to paint. Sample tins are available to buy as a size option for all paint ranges in the shop.