Do I need to completely sand away the bright green gloss paint on door frames down to the wood?

I am redecorating and the original doorframesand wood fittings in the room are bright green gloss. I have been told that I need to sand this paint away before I can add the new gloss (white), but even with an electric sander it looks like that will take forever. Is it not enough to key the gloss, then add an undercoat and then the white paint? Advice from DIY experts, please!!Do I need to completely sand away the bright green gloss paint on door frames down to the wood?
sand enough to dull the paint prime paintDo I need to completely sand away the bright green gloss paint on door frames down to the wood?
There are two things to consider - you need a smoothly sanded surface, so if you have areas of paint then areas of wood, that minute depth change will show on the new painted surface.





Secondly you have to be able to shut the door - so taking away enough paint to prevent the door going back into the hole when painted again is the other reason for sanding.





As long as you consider the above, and the undercoat and top coat will cover the green, it will be fine.
Im an apprentice painter and decorator.





I dont know who told you that, but they have no idea what they are talking about.





You will want a flat surface because gloss shows up any bumps so easily, which is why people have a hard time with it and fear the paint.





If you have bare wood, then you will need to prime it, here you go i made you a plan of action:





1] Sand the area to be painted so it feels smooth when rubbing your hand across it.





2] If you have any bare wood, spot prime it [Allow to dry]





3] Apply a undercoat, that wont defect the final coat of gloss E.G. dont use black undercoat if your gloss is white [Allow to dry]





4] Sand the entire area very lightly again, and using a brush dust the door off (Excessive dust can defect the paint and/or finish)





5] Apply your gloss to the door and try to keep the area free from dust E.G. dont paint your door and frame etc, then go and sand something or start cleaning.
Firstly, forget what you just heard. You cannot sand gloss paint off. I'm sure its possible but if you were getting paid for the job you would be taking the piss.


Secondly, the guy who said to use sugar soap is wrong. You clean gloss with sugar soap you don't use it to strip gloss.





The only way to strip gloss completely off a door is with 2 simple items.





1. a blow torch.





2. a scraper.





You simply warm up and area enough until it is bubbling or 'boiling' and then to remove the heat and scrap it off. simples. If your serious about doing any other diy please you can just buy a big thick book and it will probably have DIY in painting and decorating, brickwork and pointing, plastering and rendering, plumbing and heating and carpentry.





P.S. Never mess with gas or electrical unless confident and qualified in that area.





Good Luck.
Don't sand! You only sand to remove defective, flaking paint. You are on the right track re keying. Use a nylon scouring pad (scotchbrite) and sugar soap with warm water. Rinse well and allow to dry fully. Apply white undercoat. You may well need two coats of u/c to obliterate the green. Drying times will be on the tin. Then apply gloss after the u/c is dry. The gloss will not cover another colour. It's well worth putting two coats of u/c on as this is what is is formulated to do.
No yo don't but you must sand it til its dull so it gives the new paint a ';KEY'; to cling to. Will take more than one coatthough. Also you may be as well considering new fresh doors frames. Very easy to remove old ones and replace so long as you can use a saw and you understand mitres . look lovely too when they are new
remove any excess paint on the hinge side ,top ,and latch side of the frame. If not the paint build up can interfere with door closing. Using a small 1';paint scraper works fast and well. Also do this on the doors before painting. Many people over look this when painting older doors with paint build up.
Use a 40 grit production paper and sand down by hand until dull. Apply two coats of oil based undercoat 24 hours between coats. Then use a fine paper 120 grit to lightly sand the undercoat, then gloss. Use a quality paint like Dulux.
Just a light sanding to provide a key for the new paint, Id use an undercoat once the surface has been wiped down / degreased then a good non drip gloss paint I usually use Crown paint as its economical %26amp; I saw it recommended in a consumer research magazine
you only need to take off the gloss of the green paint so that the white will stick. you may want to use a base coat so that the green does not bleed through.
No, just enough to scratch the old paint and give the new paint a key to stick to.





Prime it


Undercoat it


Gloss it





Sand between coats
No you don`t have to all you need to do is dull the gloss paint.
remove old paint most economically with a heat gun and scraper