My brickie says that BCO's prefer joists to be hung of joist hangers these
days rather than having them mortared into the walls. why would this be?

steve

In article ,
r.p.mcmurphy wrote:
My brickie says that BCO's prefer joists to be hung of joist hangers
these days rather than having them mortared into the walls. why would
this be?

Less chance of moisture penetration?

--
*The statement below is true.

Dave Plowman London SW
To e-mail, change noise into sound.

In article ,
"r.p.mcmurphy" says...
My brickie says that BCO's prefer joists to be hung of joist hangers these
days rather than having them mortared into the walls. why would this be?

Because he's trying to make life easier for himself?

"Rob Morley" wrote in message
t...
In article ,
"r.p.mcmurphy" says...
My brickie says that BCO's prefer joists to be hung of joist hangers
these
days rather than having them mortared into the walls. why would this be?

Because he's trying to make life easier for himself?

That was my first thought faced with this myself - saves making holes in the
walls to get the new joists in ...

Reminds me I really need to involve the BCO at an early stage for my
project ...

Dave Plowman (News) wrote:

Less chance of moisture penetration?

and less chance of penetrating a fire break, or allowing drafts through.

--
Cheers,

John.

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It's mainly to do with the new (Part L?) regs for insulation. Joist
hangers stop thermal bridging. The down side is that the floor will be
more susceptible for squeaking. You can set the joists into the walls
and use plastic "boots" on the end - this meets the new regs (see
Screfix 31310).

On Sun, 31 Jul 2005 09:49:53 +0100, a particular chimpanzee named
"r.p.mcmurphy" randomly hit the
keyboard and produced:

My brickie says that BCO's prefer joists to be hung of joist hangers these
days rather than having them mortared into the walls. why would this be?

Couple of reasons:

1. If the wall is a party wall, the joists MUST be on hangers to
prevent flanking sound transmission from the floor to the wall.
Joists built into a masonry wall can also shrink and allow air (and
sound) to travel through the wall.

2. It is recommended that all joists are on hangers to external walls
to maintain the air-tightness of the building (warm air uses energy to
heat, so you don't want it escaping through the walls). I think most
BCOs would allow the joists to be built in, provided that they are
sealed with mastic to seal any gaps.
--
Hugo Nebula
"If no-one on the internet wants a piece of this,
just how far from the pack have you strayed?"

On Sun, 31 Jul 2005 11:09:27 +0100, a particular chimpanzee named Rob
Morley randomly hit the keyboard and produced:

In article ,
"r.p.mcmurphy" says...
My brickie says that BCO's prefer joists to be hung of joist hangers these
days rather than having them mortared into the walls. why would this be?

Because he's trying to make life easier for himself?

So why do 90% of brickies & joiners still cut pockets in the blocks,
and look aghast when you tell them they should have used hangers.
--
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 Sun, 31 Jul 2005 11:09:27 +0100, a particular chimpanzee named Rob
Morley randomly hit the keyboard and produced:

In article ,
"r.p.mcmurphy" says...
My brickie says that BCO's prefer joists to be hung of joist hangers
these
days rather than having them mortared into the walls. why would this
be?

Because he's trying to make life easier for himself?

So why do 90% of brickies & joiners still cut pockets in the blocks,
and look aghast when you tell them they should have used hangers.
--

oops ! - missed that it was _new_build_ ....

I guess most tradesmen are fairly "conservative" ... and it has to be said
there are probably millions of houses where it proved to be a perfectly
reasonable way to do things ...though I have to say that as I virtually
rebuild my Victorian hovel I have good evidence for wishing to avoid having
any timber directly in contact with the solid outside walls - it's amazing
my house is still standing !