The best solution (fastest and most durable) for protecting woods, is to use the old masters technique: apply 3 to 10+ very thin coats of glossy waterborne polyurethane (also called polyacrylic) and then apply 3 to 6 very thin coats of satin waterborne polyurethane.
For each coat: apply a thin layer of the polyurethane, do not have too much on the brush and just apply it in one stroke, do not over work it. Thin coats allow trapped air bubbles to escape easily. Working the polyurethane with the brush is what causes the bubbles. The thin coats dry in 1.5 hours in ambient room temp air, this time can be reduced by using a blow drier or shop-vac. Once it is dry sand with a very fine sandpaper, like the 3M Sandblaster 320 grit. Blow the dust of the surface and wipe with a slightley damp (water) microcloth. Make sure the surface is dry and clean and then apply the next coat.
Why use this method?
Be very patient, the thin coats will give you an amazing end product that does not have streaks or bubbles in it. The end finnish is very close to a satin finnish, but has a wonderful depth to it because of the gloss underneath. The gloss is used because it is much stronger, if a stronger finnish is desired use more (10+) coats of the gloss polyurethane and then apply the satin coats until the desired finnish is achieved. The water-based polyurethane is used as opposed to the oil-based, because is dries much faster (hours compared to overnight), is easy to clean up with water (instead of mineral spirts), is less liley to damage brushes, and does not amber/yellow the wood like the oil-based does.
No, always apply a primer coat to bare wood.
You can use spray paint on wrought iron railing successfully as long as the proper preparation is done. Make sure the surface is clean and free of rust and scale, apply a primer to all bare metal, then apply several thin coats of the paint, ensuring solid coverage with no pinholes.
You can't stain a door that is already sealed. You have to first remove the sealer down to bare wood so that the stain can penetrate into the wood to the color desired, then reseal with a polyurethane or spar varnish.
Impossible to say as it depends on what the lacquer is - polyurethane may not be compatible. Totally safe options - strip and start from bare wood or wax only.
If the paint scrathes off easily then it wasnt prepped properly. I dont recommend polyurethane over paint that is peeling. Your best bet is to prep them properly and repaint. First strip all the old (new) paint that is peeling down to bare wood. You should prime with a good oil based stain blocking primer like Kilz. After that fully dries any good paint will do, but an oil based paint will hold up better over the long haul. If you decide you are going to try and coat the existing job, then use varnish instead of polyurethane. But I highly advise against doing this.
Yes, you can,and it's very good for that use. However if the concrete is bare, you must apply an epoxy primer before the polyurethane finish.
Apply direct pressure with your bare hands. Reassure you Buddy, and let him know help is on the way.
No, always apply a primer coat to bare wood.
holding the cat with your bare hands.
B. holding the cat with your bare hands
it will crack the same it will on top of a nail polish.
You can use spray paint on wrought iron railing successfully as long as the proper preparation is done. Make sure the surface is clean and free of rust and scale, apply a primer to all bare metal, then apply several thin coats of the paint, ensuring solid coverage with no pinholes.
wearing heavy gloves
Bare Minerals is a good makeup product to use because it comes in powder form and is light on your face. You can just apply this with a brush, go lightly.
Impossible to say as it depends on what the lacquer is - polyurethane may not be compatible. Totally safe options - strip and start from bare wood or wax only.
You can't stain a door that is already sealed. You have to first remove the sealer down to bare wood so that the stain can penetrate into the wood to the color desired, then reseal with a polyurethane or spar varnish.
The website linked below contains a simple method.