Quote:
Originally Posted by stuntbutt  MDF will not hold screws well enough to support hinges. You would need solid wood on the jam side of the door.
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Not sure about that if laminating multiple layers of MDF together, whic I think 6666 is interested in.
My doors are 3X18mm MDF glued and screwed together to create a door that weighs 65 kg . They're still hanging after 6 months
, and provide some excellent isolation. (although double in each room)
here's a pic while they were being built. 4 heavy duty hinges though, note there are three hinges on upper half of the door and one on the bottom.
And after you paint it with MDF undercoat and enamel paint, they'll last for years and years.
Good luck