How do I fit a replacement UPCV Front Door + Frame?

[jcdk]

Hi, can anyone help?

I am told it is quite straight forward and I am a competent DIY'er so am very keen to give it a go.

My House was built approx 1930 and has 75mm wall cavity. It looks as though someone has replace the frame and door at some time in the past as the frame is between the plaster on the inside wall skin.

The outside wall does not continue under the door with any DPC as it is just concrete which is part of the front step (same height as DPC). I dont know how far under the door the concrete goes but I am assuming there is a gap between the concrete step and the internal wall.

The internal wall door opening width from plaster to plaster is 910mm and from DPC to plaster at top is 2170mm. I could take the plaster off the intenal wall which would make the opening approx 930mm x 2180mm.

The outside opening is 850mm from brick to brick and from step to door lintel is 2170mm.

Some people say bed the cill on motar, then fit the door to cill, some say screw the cill to the bottom of the door then be the whole lot onto a couple of beads of low mod silcione.

If the 75mm UPVC frame is fitted to the gap on the inside wall, it will not bridge the gap and butt up against the outside wall. Should cavity closers be used? or is expanding foam ok? I assume that the UPVC finishing trom will cover the gap anyway.

Any help would be good or an illustration would be fantastic. I have trawled the web but couldn find anything.

Thanks again in advance

Jimmy

[Dave Plowman (News)]

Dunno about a front door, but I bought a UPVC window and patio doors from Screwfix and they came with comprehensive DIY fitting instructions. The important thing with both those was to mount the frame true and square and not under undue stress at any point. I used multiple wedges to achieve this

[Phil Anthropist]

Door fitting instructions here:

[Dave Plowman (News)]

Comes out as gobbledygook - isn't a proper PDF?

[Lobster]

Works fine here: take it you are looking at this?

David

[Dave Plowman (News)]

The other PDFs on the site work ok - just not the door one.

[gort]

Door one works here using Firefox and Adobe Acrobat 7 under linux.

Dave

[jcdk]

Many thanks for all the help, I managed to view PDF document ok,

I understand the need to have the frame true and square, but should I fit cavity closers?

The PDF document says butt up to plaster line but the internal wall is bigger than the external wall so my door will have to be fitted from inside (it will open inwards). Should I take the plaster off the inside wall and screw frame direct to the brick without too much of a gap?

After I have squared the frame between the brickwork on the inside wall, the 70mm frame does not reach the outside wall skin (I know I said 75mm - I am competent, just illiterate!)

Do I just fill the gap with expanding foam or do I need to line the inside of the external wall with timber to butt the UPVC frame against.

Or just hide the gap with UPVC finishing strips.

many thanks Jimmy