Leyland Trade Acrylic Primer Undercoat - White 2.5L

Product Information

Oil-based undercoat paints are for use with oil-based finishing paints. While these paints were traditionally the choice of professionals, advances in water-based options mean that today many will use both, or have moved to water-based entirely. It’s worth keeping in mind that oil-based undercoat paints will release volatile organic compounds (VOCs) while drying, which can be dangerous. Ensuring adequate ventilation is crucial, with many opting to use water-based paints internally. Water-Based Undercoat So, pardon me for answering your question with a question, but I'm wondering if you couldn't save a step here by simply roughening the paint you want to paint over with some sandpaper, and then painting over it with the paint you intend to use. That way, you wouldn't even need to undercoat first. This is not a good practice as the primer does not provide a surface that is resistant to weathering and the elements. Primed surfaces that have been exposed may need to be prepared and re-primed. Generally the finishing coats need to be applied as soon as possible. Preferably within 7 days. If you want a good smooth paint finish on your MDF, there isn’t any real alternative to priming or sealing. Medium-density fibreboard is made from small wood fibres such as sawdust and shavings, which are mixed with resin and wax and compressed into panels. It is not fond of water as this can make the board swell. So it needs to be treated - or primed or sealed - before you consider painting it.

What kind of undercoat should I use before painting the walls with matt emulsion paint? A guy at the local Homebase recommend Alkali Resistant Primer Sealer in off white from International, but he also said that I could use a normal white emulsion paint, if the plaster is in good condition and I want to save money. Alkali Resistant Primer Sealer is supposed to seal salts in new plaster, but surely this is a not a problem as the house is over 35 years old? As you've now seen, there are many varieties of undercoat (or primer), with prices varying from single well into double figures for the same quantity of product! These are the key criteria that differentiate the many varieties of primer. Opacifying power This type of paint is multi-purpose and renders the substrate uniform, concealing imperfections, and improves adhesion of the finishing paint. It also makes application and removal of other wall products easier, can be applied in any room (dry or wet) and can be covered over with any type of top coat (glycero or acrylic). It is best suited to interior surfaces in good condition. It provides strong adhesion on plaster, plasterboard, wood and cement, and gives economical coverage in large volumes. Plasterboard primer Any item not in its original condition is damaged or missing parts for reasons not due to our error. An undercoat, as its name suggests, is the first layer of paint applied to a clean, dry substrate, before the finishing coat. Although it might be tempting to cut out this step - lazy as we are! - it really does make a big difference!

If you have a much larger surface to paint (tile, furniture, etc.), it's often more economical to apply an appropriate undercoat and then cover it with a conventional top coat - giving you a much wider choice of colour, texture and composition (glycero or acrylic).Avoid breathing in those nasty VOCs (volatile organic compounds) by equipping yourself with a protective mask! The term "mist coat" is rather contentious. Some people prefer to go for a 50/50 mix. I find that kind of ratio to be so thin that the paint splashes all over the place. I follow the manufacturers advice with regards to thinning the first coat- in the case of Dulux Trade paints, that is normally 10% water to 90% paint. Specification CoverageApproximately 6-8 sq metres per litre. ApplicationBrush, roller or spray. Drying TimeUnder normal circumstances the product should be touch dry within 4-6hrs if well ventilated and conditions are dry. Re-coat possible after 24hrs. Please note that drying times can different in cold and damp conditions. Applying the product in thin coats will allow a faster drying time and better finish. StorageProtect from frost and secure lid firmly to prevent paint from drying out. Surface PrepEnsure all surfaces are sound and clean, free from algae and moss. Remove any loose or flaking paint. ThinnersCan be let down with water if needed. You may also like… Easy to paint over, these provide effective protection against rust in ferrous metals and reinforce the adhesion of finishing paint. Can be covered over with any type of decorative paint (make sure you use an appropriate weatherproof paint if outdoors). Aluminium, copper, zinc and galvanized metal primers Priming bare timber is essential for the success of the whole paint system. The primer soaks into the timber creating a good bond and quenches the absorbency. This provides a sound base for the next coating.

Vinylics are water-based paints low in pigment, useful for priming plaster or plasterboard to make it less fragmentary and porous. Acrylic Under normal circumstances it should be touch dry in 4 -6 hours if well ventilated and conditions are dry.

Although most "universal" primers are intended for certain types of materials (such as tiles or plastics), more unusual materials such as PVC, laminate, cast iron or iron may need a specialized underlay to ensure good adhesion of subsequent coats of paint. Primers for wall tile / decorative plaster Intended for use with emulsion paints, water-based undercoats are vital in many cases for a smooth finish. Most of the options within the UK will also function as a primer, effectively offering protection for the underlying material and an adhesive surface for painting in a single coat. Acrylic Primer Undercoat However, if you don’t want to paint your MDF there are a few alternatives to primer/sealer. Effectively, they do the same job - seal the MDF - but in different ways. If you like the natural look of MDF and want to add some protection you can use a clear varnish - choose matt or gloss - to keep your MDF looking like new. An oil-based varnish is the best choice for this. You apply in much the same way as primer/sealer/paint, with a brush or roller.