Leyland Trade Alkali Resisting Wall Primer - White 5L

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You will know its mostly good practice to prime any baresurface before applying paint, but you’re probably confused by the number of primers on the market, and what should be used where? Note: You may also be confused by the various terms used, and what the difference is between primer a sealer and an undercoat. While some manufacturers add to the confusion, it may be worth offering a general explanation. Spread the paint in zig zag M or W patterns beginning with an upward stroke to reduce spatter. Without lifting roller from the surface, fill in the gaps with parallel strokes. This can cause a headache for both walls and woodwork. If the previous colour was dark, this has can ‘grin’ through the new pale finish, meaning you may need an extra coat or two. This can be avoided by obliterating the dark shade using an undercoat on woodwork and a coat of a pale Matt wall paint on the walls. Of course, this also works if you are painting over a pale shard with a dark one, you just use a dark undercoat/matt instead.

Surfaces that are already painted and in good condition can simply be over coated (after cleaning and a light sand). Always use matt paint as an “undercoat” if there is a dramatic colour change, even if you are finishing with soft sheen or silk.Bare plaster that is fully dry may be “primed” with a thinned first coat of Vinyl matt(“Mist coat”). Filled sections should be dealt with in the same way (i.e. patch-primed). Bare plasterboard should be primed with Dulux Trade Drywall Primer Sealer. Painting Bare Wood The terms often get mixed up and depending on where you are in the UK, you might use alternative terms. Just to confuse matters further, we also have primer/undercoats and primer/sealers, which do both jobs! Coo-Var Alkali Resisting Primer Sealer is ideal as a high quality primer prior to painting. It is resistant to solvents and salts, is excellent on walls and plaster with easy application, and is also ideal for use on walls and plaster. To find Ready Mixed colours, search "ready mixed" or select the Ready Mixed 'colour chart'. To see Tinted colours select a colour chart such as RAL, BS, NCS, etc. or search for a colour/hue to see available or related options. Should I prime metal?" - Untreated metal requires a primer to seal it from exposure before any other paint may be applied. In certain circumstances, specialist primers will be required, for general metal work we recommend Dulux Trade All Purpose Primer

Thoroughly remove all dirt or organic matter on which mildew can feed. Use a power washer if necessary. Application: Brush only. For Health and Safety reasons related to all solvent-based paints, spray application is not recommended. STIR THOROUGHLY BEFORE USE. After suitable surface preparation, apply 1 coat of Dulux Trade Alkali Resisting Primer to bare or stained surfaces.Finish with an appropriate Dulux Trade paint system

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For exterior masonry, surfaces can variously have a high pH level (alkaline), be chalky/powdery, or staining, which can cause adhesion problems and discolouration of the finish. While in most cases, if the surface is sound and dry, there is no need for a primer, but when you need one – use one. Confirm that the problem is indeed mildew by applying a few drops of bleach. If it whitens, it is likely to be mildew. Remove wrinkled coating before repainting by scraping or sanding substrate. Apply primer and allow it to dry completely before applying the top coat Painting under direct sunlight or on surfaces that are too warm. This is especially true if the coating you’re using is dark in colour and solvent-based.

The main benefit of a primer is to even out the porosity of the surface and ensure optimum adhesion so that you get the best possible results from your paint system, but other features might include stabilising a powdery surface or helping to prevent stains ruining your decoration. We have outlined the major benefits of priming (or undercoating), and when (and where) you may need to use a specific product. We’ve also given you a link to some of our tried and trusted “priming” products to help you make the right choice, and you can find our full range of “primers” here. When do I need a “primer” for internal walls/ceilings? Remove sources of moisture. Repair loose caulk and install vents and exhaust fans wherever possible.

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High humidity and moisture in spaces such as bathrooms, kitchens and laundry areas encourage microbial growth