Wall material between dormer room and attic spaces
 

Anyone know if in England, such a wall needs to be predominantly fire
resistant?

Stripping out the plasterboard now, to get more celotex on the underside
of the roof.

However, I'm interested in the idea of running 3' high 18mm plywood
around the entire room, routed with grooves to look like plank panelling.

Some sections would be removable and we'd make some secret doors for
access to the loft voids.

Before I go and bother the BCO, I'd like to check out some ideas so I
can go with a plan likely to meet approval.

It's one dormer room, about 2/3rds of the roof space, on top of a single
storey bungalow (so the dormer is the first floor) and only one room up
there, a sitting room.

So this ply would be the primary layer between room and attic.

Cheers for any thoughts...

Tim

Wall material between dormer room and attic spaces
 

Tim Watts wrote:
Anyone know if in England, such a wall needs to be predominantly fire
resistant?

Stripping out the plasterboard now, to get more celotex on the underside
of the roof.

However, I'm interested in the idea of running 3' high 18mm plywood
around the entire room, routed with grooves to look like plank panelling.

Some sections would be removable and we'd make some secret doors for
access to the loft voids.

Before I go and bother the BCO, I'd like to check out some ideas so I
can go with a plan likely to meet approval.

It's one dormer room, about 2/3rds of the roof space, on top of a single
storey bungalow (so the dormer is the first floor) and only one room up
there, a sitting room.

So this ply would be the primary layer between room and attic.

Cheers for any thoughts...

Tim
The only loft fire resistance need that comes to mind is between lofts
of semi detached or terraced properties.

I can't think of a need in a detached property. I certainly did not have
to add any when I did my loft conversion in the 1980s $ dormers and 4
storage areas into the loft space.

I don't know if you have a warm or cold roof but pay attention to
insulation/ventilation needs

Wall material between dormer room and attic spaces
 

On 16/03/16 17:39, Tim Watts wrote:
Anyone know if in England, such a wall needs to be predominantly fire
resistant?

I dont think so but you WILL need smoke alatrms.

Stripping out the plasterboard now, to get more celotex on the underside
of the roof.

However, I'm interested in the idea of running 3' high 18mm plywood
around the entire room, routed with grooves to look like plank panelling.

Some sections would be removable and we'd make some secret doors for
access to the loft voids.


Before I go and bother the BCO, I'd like to check out some ideas so I
can go with a plan likely to meet approval.

worst case use masterboard behind the wood planks, if you need a fire
barrier.

It's one dormer room, about 2/3rds of the roof space, on top of a single
storey bungalow (so the dormer is the first floor) and only one room up
there, a sitting room.

So this ply would be the primary layer between room and attic.

Cheers for any thoughts...

Tim


--
A lie can travel halfway around the world while the truth is putting on
its shoes.

Wall material between dormer room and attic spaces
 

On 16/03/16 17:51, Bob Minchin wrote:

Tim
The only loft fire resistance need that comes to mind is between lofts
of semi detached or terraced properties.

Seems reasonable - thank you.

The only thing that I wondered about is mounting sockets in this
panelling (in the non removable parts). But having checked, I cannot
find anything prohibiting that.

I was wondering to upgrade to fire resistant ply, but it's not that easy
to get - we'll be needing a fairly good quality ply to route grooves in.

I can't think of a need in a detached property. I certainly did not have
to add any when I did my loft conversion in the 1980s $ dormers and 4
storage areas into the loft space.

I don't know if you have a warm or cold roof but pay attention to
insulation/ventilation needs

Indeed - the BCO was involved there and we've done everything required
(tyvek under the tiles, 25mm air gap, 3" celotex between rafters and
added new proper vents bother ends of the flat roof so the deck is
ventilated (50mm gap between deck and celotex as BCO specified).

The remaining 25mm/50mm layer of celotex will bring everything to around
100mm total and act as the final vapour barrier between the roof
structure (which is cold) and the dwelling space.

Wall material between dormer room and attic spaces
 

On 16/03/16 17:53, The Natural Philosopher wrote:
On 16/03/16 17:39, Tim Watts wrote:
Anyone know if in England, such a wall needs to be predominantly fire
resistant?

I dont think so but you WILL need smoke alatrms.

Stripping out the plasterboard now, to get more celotex on the underside
of the roof.

However, I'm interested in the idea of running 3' high 18mm plywood
around the entire room, routed with grooves to look like plank panelling.

Some sections would be removable and we'd make some secret doors for
access to the loft voids.


Before I go and bother the BCO, I'd like to check out some ideas so I
can go with a plan likely to meet approval.

worst case use masterboard behind the wood planks, if you need a fire
barrier.

That is not a bad idea at all... Could bond a thinner ply to the surface
to route grooves into.

Wall material between dormer room and attic spaces
 

In message , Tim Watts
writes
Anyone know if in England, such a wall needs to be predominantly fire
resistant?

Stripping out the plasterboard now, to get more celotex on the
underside of the roof.

However, I'm interested in the idea of running 3' high 18mm plywood
around the entire room, routed with grooves to look like plank
panelling.

Some sections would be removable and we'd make some secret doors for
access to the loft voids.

Before I go and bother the BCO, I'd like to check out some ideas so I
can go with a plan likely to meet approval.

It's one dormer room, about 2/3rds of the roof space, on top of a
single storey bungalow (so the dormer is the first floor) and only one
room up there, a sitting room.

So this ply would be the primary layer between room and attic.

Cheers for any thoughts...

There's this stuff
http://www.winwood-products.com/eng/.../fire-retardan
t-plywood.htm

You can purchase paint on intumescent products but I don't know if they
do a clear lacquer or how child/pet friendly it might be.

Our builders *fireproofed* a supporting steel with 18mm pine board Hilti
gunned on. (20 years ago)

--
Tim Lamb

Wall material between dormer room and attic spaces
 

In message , Tim Watts
writes
On 16/03/16 17:53, The Natural Philosopher wrote:

worst case use masterboard behind the wood planks, if you need a fire
barrier.

That is not a bad idea at all... Could bond a thinner ply to the
surface to route grooves into.

I've seen grooved ply used as a wall decoration so you can probably buy
it ready to nail up.


--
Tim Lamb

Wall material between dormer room and attic spaces
 

Tim Watts wrote:
On 16/03/16 17:53, The Natural Philosopher wrote:
On 16/03/16 17:39, Tim Watts wrote:
Anyone know if in England, such a wall needs to be predominantly fire
resistant?

I dont think so but you WILL need smoke alatrms.

Stripping out the plasterboard now, to get more celotex on the
underside
of the roof.

However, I'm interested in the idea of running 3' high 18mm plywood
around the entire room, routed with grooves to look like plank
panelling.

Some sections would be removable and we'd make some secret doors for
access to the loft voids.


Before I go and bother the BCO, I'd like to check out some ideas so I
can go with a plan likely to meet approval.

worst case use masterboard behind the wood planks, if you need a fire
barrier.

That is not a bad idea at all... Could bond a thinner ply to the
surface to route grooves into.


IIRC you can buy ply cladding(thin) with the grooves already cut.

Wall material between dormer room and attic spaces
 

"Tim Watts" wrote in message
...


The only thing that I wondered about is mounting sockets in this panelling
(in the non removable parts). But having checked, I cannot find anything
prohibiting that.

You can always fit intumescent back boxes if it bothers you or indeed fit a
intumescent gasket to a normal box

They are not that expensive and also act as acoustic barriers if needed.




--
Adam

Wall material between dormer room and attic spaces
 

On 16/03/16 18:18, Tim Lamb wrote:

There's this stuff
http://www.winwood-products.com/eng/.../fire-retardan
t-plywood.htm

I have been considering that - not cheap. But Euroclass B seems to be
equivalent to painted plasterboard for ability to hold back a fire.

You can purchase paint on intumescent products but I don't know if they
do a clear lacquer or how child/pet friendly it might be.


I've also come across a link to one of those too - amazing stuff. Used
in Stately Homes:

http://envirograf.com/product/intume...-for-wood-etc/

Our builders *fireproofed* a supporting steel with 18mm pine board Hilti
gunned on. (20 years ago)


:)

Wall material between dormer room and attic spaces
 

On 16/03/16 18:32, Capitol wrote:
Tim Watts wrote:
On 16/03/16 17:53, The Natural Philosopher wrote:
On 16/03/16 17:39, Tim Watts wrote:
Anyone know if in England, such a wall needs to be predominantly fire
resistant?

I dont think so but you WILL need smoke alatrms.

Stripping out the plasterboard now, to get more celotex on the
underside
of the roof.

However, I'm interested in the idea of running 3' high 18mm plywood
around the entire room, routed with grooves to look like plank
panelling.

Some sections would be removable and we'd make some secret doors for
access to the loft voids.


Before I go and bother the BCO, I'd like to check out some ideas so I
can go with a plan likely to meet approval.

worst case use masterboard behind the wood planks, if you need a fire
barrier.

That is not a bad idea at all... Could bond a thinner ply to the
surface to route grooves into.


IIRC you can buy ply cladding(thin) with the grooves already cut.

I've seen MDF, not ply - wonder who sells it?

Wall material between dormer room and attic spaces
 

On 16/03/16 19:02, ARW wrote:
"Tim Watts" wrote in message
...


The only thing that I wondered about is mounting sockets in this
panelling (in the non removable parts). But having checked, I cannot
find anything prohibiting that.

You can always fit intumescent back boxes if it bothers you or indeed
fit a intumescent gasket to a normal box

They are not that expensive and also act as acoustic barriers if needed.





£3 at TLC for the metal intumescent box - you're right, not expensive
for a very few that are needed.