We are having a loft conversion done, and are going down the submitting full
plans to building control route.

The project is mainly DIY with assistance from a structural engineer.

The property is a 1030's end of terrace with the stairwell leading straight
down towards the front door . The hall has a door off to the front room, and
a door to the back (dining) room. The problem we have is creating a fire
rated protected stairwell as the wall between the staircase and the back
room is original 1930 tongue and groove boards approx 22mm thick. These are
supported top and bottom with additional fixings into the side of the stair.

The boards continue down to create an understairs cupboard.

Obviously, the T&G will need to be uprated to achieve a 30 minute fire
rating, but does anybody have any experience of what is required? Local
Building Control where very helpful on the phone, but they (and us!) are at
a bit of a loss with how to comply without ripping down the wall and put up
new studwork with 12.5mm plasterboard both sides.

Ideally we would like to keep at least one side of the boards showing.

Any ideas?

BTW, we are getting the new staircase made to measure from Stairplan, we
have found them very helpful and would recommend them to anyone else having
a conversion. Price is very reasonable - under half the cost of all the
insulation required!

Paul
real is pjw at ntstelcom#co#uk

"Paul Worsley" wrote in message
.. .
We are having a loft conversion done, and are going down the submitting
full plans to building control route.


The property is a 1030's end of terrace

Probably grade I listed then ?

" The property is a 1030's end of terrace

Probably grade I listed then ?


Nah. If it is that old it wil have Ancient Monument status!

Peter Crosland

"Paul Worsley" wrote in message
.. .
We are having a loft conversion done, and are going down the submitting
full
plans to building control route.

The project is mainly DIY with assistance from a structural engineer.

The property is a 1030's end of terrace with the stairwell leading
straight
down towards the front door . The hall has a door off to the front room,
and
a door to the back (dining) room. The problem we have is creating a fire
rated protected stairwell as the wall between the staircase and the back
room is original 1930 tongue and groove boards approx 22mm thick. These
are
supported top and bottom with additional fixings into the side of the
stair.

The boards continue down to create an understairs cupboard.

Obviously, the T&G will need to be uprated to achieve a 30 minute fire
rating, but does anybody have any experience of what is required? Local
Building Control where very helpful on the phone, but they (and us!) are
at
a bit of a loss with how to comply without ripping down the wall and put
up
new studwork with 12.5mm plasterboard both sides.

Ideally we would like to keep at least one side of the boards showing.

Any ideas?


Anti-tumescent paint (sp?) applied both sides somehow ? Don't know if it
will last long enough but worth investigating.

On Mon, 9 May 2005 15:33:46 +0100, a particular chimpanzee named "Paul
Worsley" randomly hit the keyboard and
produced:

The problem we have is creating a fire
rated protected stairwell as the wall between the staircase and the back
room is original 1930 tongue and groove boards approx 22mm thick.

http://www.envirograf.com/acrobat/coatings.pdf
--
Hugo Nebula
"If no-one on the internet wants a piece of this,
just how far from the pack have you strayed?"

"Hugo Nebula" abuse@localhost wrote in message
...
On Mon, 9 May 2005 15:33:46 +0100, a particular chimpanzee named "Paul
Worsley" randomly hit the keyboard and
produced:

The problem we have is creating a fire
rated protected stairwell as the wall between the staircase and the back
room is original 1930 tongue and groove boards approx 22mm thick.

http://www.envirograf.com/acrobat/coatings.pdf
--
Thanks Hugo.

A visit to BC indicated that covering the back room side "should comply"
Their concern was if the T&G would be enough surport on its own for the
plasterboard. First BC inspection in 10 days - fingers crossed.

A ton and a bit of timber arrived today, the 75x200x4800 bearers would not
fit up the stairs! had to take out a window!

Paul