in this presentation what I want to show you is how we can install a
Door jamm, which is the part I'm indicating here into our frame
So that it's plumb, the Styles are plumb
The head is level and all the other components are square and parallel to
each other
So this is the end product. Let's go back to the start and see what we need to do
So obviously there's our frame
First step we need to do is
cut our
head material
to the width of the opening
now you can measure it or just
Take it straight off the actual opening like I've done here
whatever
method is best for you, but
We need to get that measurement then we can take our head material over to our
work area and
the first thing we need to do on here is find our center line, so
pretty simple measuring in from the ends find the center and
mark the Centerline just a light mark. That's not going to be permanent
From there, we then need to mark evenly onto our head our door width
so yeah
finally with the door halve it measure that distance out from the center and
You'll get the door width marked Centrally onto the head
Now each side of the door we need to have a
Clearance or a Margin to
allow for painting staining and
Just to have a little bit of that clearance around the door so generally with a painted door and jamb
We'd leave 3mm, and if you're going to stain and varnish
The Jamb and the door We leave about 2mm clearance
So whatever you decide
You need to allow a little clearance
dimension there
so that next step then is to actually marking where our Jamb is going to
meet our head
So, best way to do it is the a little bit of an off cut of your Jamb material
and even if you buy the
Standard Jamb packs which can get from your local hardware
you might should be able to cut a very small off cut off off the head and
You can use that it won't be as long as what I've got pictured here
but you should be able to get yourself an off cut
So what I've done as you can see I've lined the rebated section of the style
material of the off cut up with the clearance
Mark and
Then I can just mark on the back edge of that I can mark
Where that's going to end up
And then I can square that all the way across
the head material
So then up here. I have to mark out the thickness of
The non rebated section so the non rebated section here and I can mark out the thickness of that
and we then need to cut that out, so whatever
means you have available when they do trench that out, so this whole section here is they on the same level and
the whole procedure needs to be repeated on the other side as well and
that's it. That's our head
Prepared ready to take our styles
so the next step then is to cut our styles the length, so
Go over to the wall
so here if it the two styles, then when we take the cut these two lengths
which you have to take into consideration is that one that's
You're going to have the height of the door
To consider you also have to have an allowance for your little clearance, so 3 or 2mm
And underneath the door
which is going to be on this end you need to have an
allowance for your floor covering, so whether you're going to have tiles
whether you are going to have carpet,floating floors are popular now days or even vinyl you have to have an allowance
So that you actually lift the door far enough off for that. You don't end up having to cut the door off later
So just remember that
Your clearance the height of your door and an allowance for the floor covering will give you the length of your style
so once you've got your styles length worked out and
Styles cut you could then attach
the head and
as you can see
styles just
slot into the housing joint that you prepared earlier and
That should be glued and nailed
Together at a minimum. If not glued and screwed personally I prefer to screw it together
You can use PVa glue or any other water-based
Construction glues or if you haven't got any of them on site a bit of construction adhesive will do the job fine
so then what we've got on the floor just want to check that the
Jamb actually Square by measuring the diagonals and
then while we've got it held square
We can put a couple of temporary braces on it
To make sure it's not going to move so a couple here to make sure the Corners stay square
On down the bottom here to keep the two styles parallel and the same distance apart
and you'll notice with these temporary braces
I've put them on the non rebated side of the jamb
So this way when I put them into the frame I can still place and install my door into the jamb
without
without having to take the braces off. So that's all ready to go we can put it up into the jamb
So once we get in the jamb what we need to do
We need to make sure first of all that our hinge style is
plumb and
that it's all are packed and
secured to the
to the stud
So best way to do that obviously stand it in to the jamb the top of the door
the top of the head is going to
Be pushed up against the study anyway because that's the length we cut it and then using a straight edge and a spirit level
We can make sure it's straight while we insert
Packers
Or what I prefer to do is use folding wedges
So these are just two wedges then these can be cut out of timber or you can buy
Proprietary made ones from the hardware store and the beauty about folding wedges is they just don't can be pushed in around
To make sure that the the jamb is touching the straight edge
Once you have them at the right
thickness, we can then drive a
Nail in to hold them into place
as you can see I've left the nail proud and generally I'll leave those nails proud until the
architraves are in place, and then I can go around and drive them home and nail everything off
at the end
So do the jamb I'll do the hinge side first
With all your bracing your head should be level
just give it a quick check, and then it can come across and carry out the same procedure
down on what we call the lock style
side of the jamb once again
using the folding wedges and nailing them off as you go
So once you've done all that what you should have is a plumb,
level,
Square and parallel
door jamb ready to receive a
door and
If the jamb done right then the fitting of the door should be a breeze