Partition Wall: Lobby area in a flat

[xeres]

Hi there

I need to reconstruct a wall and Fire Door to reinstate a lobby area in a flat. I am looking for advise as to how best to achieve this using the right materials and would welcome someone with confirmed know how. I am talking with British Gypsum tomorrow to get recommendations on suitable products but was looking for a tradesman's advice on the matter also for a "sense check". Would also appreciate of anything to avoid consider.

May I ask:

- Can I use any thickness of wood to construct the frame (what would you advise I use/stay away from doing?)
- What distances between the noggins etc
- What thickness of plasterboard
- Do I need insulation (can a specialist plasterboard meet this requirement?)
- If I need insulation, can you recommend a product to use?

- Anything else to consider (Aside from the door?)

RE: The FD30 door - whats a good, suitable (fire rated) and least messy product to use in filling the void between door lining and structural frame? I used expanding foam before and want to avoid that again, but also don't want to but a huge quantity of rock wool for such a small job.

Any recommendations on suitable products that are reasonably priced that a non-tradesman would not know about is also welcome.

With thanks in advance for your time and effort people.

X

 

[tony1851]

Just 100x50 timber studs - 400 centres - 12.5mm Fireline board. Best not to have a gap between linng and frame if poss, but just stuff some mineral wool quilt in tightly if necessary. No need for insulation between the studs.

 

[xeres]

Nice one, thanks.

As a curiosity, can you go thinner on the studs? Would assume this throws out the door lining though...

Also, the ceiling is 2700 high. How many cross-beams should I have and at what centres? 600?

Thanks

 

[tony1851]

At 2700 high, 75x50 studs might be a bit slender.
Put the horizontal noggins to suit the board widths (1200) so that the boards can be nailed all way round.

 

[ban-all-sheds]

I am looking for advise as to how best to achieve this using the right materials

Concrete blocks, mortar & plaster.

 

[tony1851]

How would he support the concrete blocks?

 

[ban-all-sheds]

On what supported the wall before it was removed?

 

[tony1851]

I think he lives on the 16th floor and doesn't fancy humping concrete blocks, bags of sand and cement, and plaster up the stairs (the lift doesn't work).

 

[cjard]

Expanding foam comes in fire resistant variety too, but if rock wool is what you settle on, why not use the rest of the roll up between the studs, for sound deadening purposes?