MDF primer

loulou41

Got a new loft ladder and trap door installed. The installer told me to paint the trap door with MDF primer and then any paint of my choice. I will be only using a small amount of primer and I do not seem to be able to buy a small tim. The only tin I could buy is about 750 mls at £12 approx. Can anybody suggest where I could buy this? It seems such a waste as will not be using it again.Thanks

Leif

andrew-b wrote: »

MDF primer is a rip off gimmick product IMHO. Just use a tin of oil-based primer suitable for wood which you can then use again elsewhere...must be oil-based though. I've painted bare MDF quite a few times...the only time i had issues was when i used Dulux water-based primer&undercoat.

Ah! What issues were those? I have MDF skirting to paint, and I bought Dulux water based primer and undercoat ... Although the skirting is primed, it needs touching up where I have sanded screw holes.

Curly

you can use

emulsion

27col

I have a cupboard that conceals some pipes at the top of the boiler. It has been painted with emulsion to match the walls of the room. This paint has been there for at least 12 years since the boiler was installed and is still perfect. On that basis I would agree that mdf primer is an unnecessary rip off.

Leif

andrew-b wrote: »

The problem is MDF just sucks up the water . Issue i had was the paint began to lift when i put the next water-based coat on. Pre-primed skirting/architrave etc should be ok. I've painted pre-primed MDF windowsill and architrave with the same water-based primer/undercoat and it was fine.

I'm glad you said that. I checked today and Dulux also make a primer for difficult surfaces including MDF. Although my skirting is primed MDF, substantial areas have had the primer sanded away (at least the surface) so I've bought the MDF primer just to be safe.

jimmybop_2

for me painting mdf very simple seal exposed edges with half waterproof pva and half water mix well brush on edges with small brush let it dry or if in a rush dry with hair dryer then sand edge with fine sand paper till smooth then repeat once more sand smooth by now the edge should be hard then just use undercoat as a primer then top coat as needed