Hello Martin,
I have hung many doors in my time as a joiner and the question on how to hinge a door correctly is debatable.
There are many different methods depending on the hinge type.
Now to keep this as simple as possible,
If these hinges are of the flush loose pin type they do not require checking into door or frame at all as they are a fairly light weight hinge more suited to diy jobs and screwed directly to door and frame.
Next would be the most common type , Butt hinge.
This type of hinge will require checking into both door and frame but it all depends on what style of butt hinge it is,
If you open the leafs of the hinge so they are parrallel with each other you should have a gap around 2mm between them, this is the ideal spacing around all sides of a good fitting door.
If this is the case then the hinge can be checked equally into door and frame so that each leaf sits flush with both.
If the gap is a lot larger than this and it may well be on an electro brassed hinge unless the leafs of hinge are cranked, you may have to check it into frame flush and into door slightly more, if you have to do this then the check you cut in door must taper from the thickness of the hinge at the rear back to whatever depth you will need at the front to keep a 2mm gap once hung.
Its an art to hang doors successfully and keep an even 2mm gap between door and frame and lots of time this is impossible if fitting to old frames where frame shrinkage has increased door opening size considerably however stick with the points above and you should do ok, i will say though its advisable to fit door to frame first before fitting any hinges as the door frame lintol may not always be level and the top of door may need trimmed to suit shape of frame.
Another important point to remember is that on a loose pin hinge MAKE SURE that you give the hinge full ball !
This is so that once hung the pin of the hinge is clear of frame and Architrave and can be pulled out and door removed.
I have seen many a doors hung by so called joiners where they have fitted a set of loose pin hinges and set them in half ball, this to a trained eye not only looks daft on a loose pin hinge but makes it impossible to remove hinge pins for removing door, defeating the purpose of fitting loose pin hinges in the first place.
Hope this helps.
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