Colors are likely to vary with the type, color, grain, porosity, and texture of the wood used. Once this was all sanded down and good to go we applied 4 coats of dulux interior wood white paint (waiting 8 hours between each application), but even after the suggested drying time and 3 months on the paint is still tacky, leaves dirt marks and impressions in the paint whenever you stand on it, and if any item is left on it when you pick it up it takes a chunk of paint stuck to it. Sounds like perhaps it hasn’t cured (it was quite humid and rainy outside over the few days we did this).
Finish one section before beginning the next (image 1). Brush out the varnish to give an even coat (image 2) Sand down the surface of the first coat because varnish, especially water-based varieties, tends to lift the grain of the wood ((image 3). Wipe the surface with a damp cloth to remove dust, and let it dry before applying the next coat (image 4). Apply further coats as required.
Normally all varnishes are available as clear or coloured varnish, even clear varnish will tend to darken the timber and, being a surface coating, a coloured varnish tends to ‘subdue’ the wood grain of the floor – to change the colour of the timber, it is often better to first stain the timber and then use a clear varnish rather than using a coloured varnish.
If the spec was to just prime undercoat and gloss then yes i agree with the other decorators the shiny varnish should of been removed as normal wood primer will not adhere to the i would of done is degreased all surfaces using a cloth and metherlated spirit then use zinsser BIN Primer Sealer which is designed to stick to glossy,varnished surfaces without the need for sanding which saves all the hassle of alot of horrible dust around the home.
Chemical staining of wood is rarely carried out because it is easier to colour wood using dye or pigmented stain, however, ammonia fuming is a chemical staining method that is still occasionally used to darken woods such as oak that contain a lot of tannins Staining of wood is difficult to control because some parts of the wood absorb more stain than others, which leads to problems such as blotchiness and streaking.
The type of wood may affect your choice of finish; for example, open-textured woods like teak, iroko and afrormosia are best treated with an oil finish – they don’t take varnishes well..You may decide to change the colour of the wood before you finish it. You can use a varnish which incorporates a colour or apply a wood stain and then coat the wood with clear varnish or another clear finish.
Any excess varnish or any that gets spilled can also be a pain to clean up. So be sure you only apply the amount you need and then keep newspaper on the floor all around it. Obviously, you don’t want to apply varnish on your wood furniture anywhere but out in the garage (keeping in mind anything that could cause a fire) or elsewhere where you don’t need to worry about some minor spills.
Examples of a semi-penetrating wood finish include Hardwax Oils such as Fiddes Traditional Hardwax Oil, Saicos Premium Oil, Treatex Hardwax Oil Traditional and Osmo Original Polyx Oil. Leave the wood lying flat during the finish application and while it dries afterward. Next, finish the samples with the same sealer and varnish coats you plan to use, to get an accurate finished look. The Osmo UV Protection Oil Extra can only be applied once all the previous varnish has been removed as it needs to soak into the surface of the wood. If working on your own, apply stain with pad and then go back to the beginning and wipe off before moving on to the next boards.
In addition, a special Baltic Wood varnish has two times higher resistance to liquid absorption and staining. I am not familiar with the Melisi product that you have used but it sounds like a Varnish, this will create a seal on the surface of the wood. Best Bets: Exterior wood surfaces (boats, decks, outdoor furniture), as well as high wear areas (flooring, tabletops, and cabinets). Depending on appearance and usage, you should treat the wood with urethane oil grey-white a few times a year. Intumescent Wood Varnish – apply 2, 3 or 4 coats, or according to the Fire Standard required by your Building Inspector.