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Unhappy breeze block wall on top of floorboards

Have been replacing 1930s floorboards and discovered that a partition wall made of breezeblock has been built directly on top of the old boards - probably in the 80s when a lot of bodging was done. This is in an upstairs bedroom. Before now I've successfully tucked the new board under any other walls as they've been safely built off joists but I'm worried there wont be enough of the old board to bear this 'orrible wall's weight. The wall is in the right place so don't want to knock it down if poss.
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Default breeze block wall on top of floorboards

On 06/08/2012 17:13, diydave123 wrote:
Have been replacing 1930s floorboards and discovered that a partition
wall made of breezeblock has been built directly on top of the old
boards - probably in the 80s when a lot of bodging was done. This is in
an upstairs bedroom. Before now I've successfully tucked the new board
under any other walls as they've been safely built off joists but I'm
worried there wont be enough of the old board to bear this 'orrible
wall's weight. The wall is in the right place so don't want to knock it
down if poss.




80's is too late for genuine breezeblock, perhaps it is lightweight
blocks which helps a bit. (But it may be standard medium density
concrete blocks). Is the floorboard parallel to the wall, or
perpendicular? If perpendicular, you should be OK doing one at a time.
If parallel, can you just extract sections over each joist (Bosch
multitool?) and replace them a bit at a time?
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Default breeze block wall on top of floorboards

On 06/08/2012 21:55, newshound wrote:
On 06/08/2012 17:13, diydave123 wrote:
Have been replacing 1930s floorboards and discovered that a partition
wall made of breezeblock has been built directly on top of the old
boards - probably in the 80s when a lot of bodging was done. This is in
an upstairs bedroom. Before now I've successfully tucked the new board
under any other walls as they've been safely built off joists but I'm
worried there wont be enough of the old board to bear this 'orrible
wall's weight. The wall is in the right place so don't want to knock it
down if poss.




80's is too late for genuine breezeblock, perhaps it is lightweight
blocks which helps a bit. (But it may be standard medium density
concrete blocks). Is the floorboard parallel to the wall, or
perpendicular? If perpendicular, you should be OK doing one at a time.
If parallel, can you just extract sections over each joist (Bosch
multitool?) and replace them a bit at a time?



Umm, what's underneath?





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Have been replacing 1930s floorboards and discovered that a partition
wall made of breezeblock has been built directly on top of the old
boards - probably in the 80s when a lot of bodging was done. This is in
an upstairs bedroom. Before now I've successfully tucked the new board
under any other walls as they've been safely built off joists but I'm
worried there wont be enough of the old board to bear this 'orrible
wall's weight. The wall is in the right place so don't want to knock it
down if poss.



80's is too late for genuine breezeblock, perhaps it is lightweight
blocks which helps a bit. (But it may be standard medium density
concrete blocks). Is the floorboard parallel to the wall, or
perpendicular? If perpendicular, you should be OK doing one at a time.
If parallel, can you just extract sections over each joist (Bosch
multitool?) and replace them a bit at a time?[/quote]

The floorboard is parallel to the wall so your suggestion to replace individual sections between joists is very welcome. Thanks
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Quote:
Originally Posted by GB View Post
On 06/08/2012 21:55, newshound wrote:
On 06/08/2012 17:13, diydave123 wrote:
Have been replacing 1930s floorboards and discovered that a partition
wall made of breezeblock has been built directly on top of the old
boards - probably in the 80s when a lot of bodging was done. This is in
an upstairs bedroom. Before now I've successfully tucked the new board
under any other walls as they've been safely built off joists but I'm
worried there wont be enough of the old board to bear this 'orrible
wall's weight. The wall is in the right place so don't want to knock it
down if poss.




80's is too late for genuine breezeblock, perhaps it is lightweight
blocks which helps a bit. (But it may be standard medium density
concrete blocks). Is the floorboard parallel to the wall, or
perpendicular? If perpendicular, you should be OK doing one at a time.
If parallel, can you just extract sections over each joist (Bosch
multitool?) and replace them a bit at a time?



Umm, what's underneath?
The floorboard is sitting on joists which are running perpendicular to the offending wall.


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Default breeze block wall on top of floorboards

On Mon, 6 Aug 2012, "newshound" writ:

On 06/08/2012 17:13, diydave123 wrote:
Have been replacing 1930s floorboards and discovered that a partition
wall made of breezeblock has been built directly on top of the old
boards - probably in the 80s when a lot of bodging was done. This is in
an upstairs bedroom. Before now I've successfully tucked the new board
under any other walls as they've been safely built off joists but I'm
worried there wont be enough of the old board to bear this 'orrible
wall's weight. The wall is in the right place so don't want to knock it
down if poss.




80's is too late for genuine breezeblock, perhaps it is lightweight
blocks which helps a bit. (But it may be standard medium density
concrete blocks). Is the floorboard parallel to the wall, or
perpendicular? If perpendicular, you should be OK doing one at a time.
If parallel, can you just extract sections over each joist (Bosch
multitool?) and replace them a bit at a time?


I have to disagree. Our 1984 built house has solid breezeblock walls
upstairs built straight onto the chipboard floors. I believe most of
them are over double joists thankfully.
--
P
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Default breeze block wall on top of floorboards

On Mon, 6 Aug 2012 16:13:42 +0000 Diydave123 wrote :
Have been replacing 1930s floorboards and discovered that a
partition wall made of breezeblock has been built directly on top of
the old boards - probably in the 80s when a lot of bodging was done.


That wasn't uncommon in the 1930s, likewise partitions built of bricks
laid on their sides

--
Tony Bryer, Greentram: 'Software to build on',
Melbourne, Australia www.greentram.com

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Default breeze block wall on top of floorboards

Tony Bryer wrote:
That wasn't uncommon in the 1930s, likewise partitions built of bricks
laid on their sides


When I helped my brother move his bathroom wall in his 1930s
ex-council house we went at it with sledge hammers and
arm-wrenchingly discovered it was built out of 12" x 8" x 4"
blocks of plaster, built straight on top of the timber floorboards.

JGH
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