澳洲Australia property Bulging Internal Wall | Sydney


在澳大利亚 The pool at of an IP needs to be resurfaced (or so the pool doctor says), the cost was estimated to be $10K ($10,000), after recoverying from my impresssion of a cat coughing up a fur ball, it just seems far too much. Its just a standard poo I need some advice regarding a property purchase. Property - semi-detached house Bedrooms - 2 Condition - average needs internal reno to modernise Street - one of the best in suburb Location - excellent Close to schools - yes Transport - 50m


Hi all, I was wondering if anyone has seen this before. In one of our IP's that we're currently renovating a wall has started to bulge and the skirting is being pushed out. There's no leak in the roof and no moisture inside the wall as we were able to have a look. The photos don't really do it justice but they were the best I can get.

The house is in Horsham and was built in the 60's, is ex housing commission and on stumps and the house has recently been restumped. The wall was an external wall but had a back room built on making it now an internal wall.

Has anyone seen this before? The only possible reason we can think of is there's been movement in one of the stumps pushing the wall out. We've had a fair bit of rain.today too.

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I would be thinking white ants,
Just pull the sheeting off and have a look or cut a hole in it where the bulge is.
Another way is to get the thermal camera from the pest man in.

Walls don't bulge for nothing,:eek:  

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I don't think it would be white ants. They will build a nest in the cavity, but I have never seen them make a bulge in the wall. Sorry, can't give any other insight on this. I've never seen it before either.  

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Another thought is,if it is an older house,it could be masonite,
When it gets wet it bulges,I have seen it on lots of older buildings,
If you cut ,scrape it and it is brown underneath,then that's what it is.
You need to replace the sheet with fibro to fix it.  

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Had something similar in a house I am currently renovating. The bulge made it looked like the wall had bowed significantly.

There was a timber veneer affixed onto the old plaster (glued and screwed in some places). The adhesive had obviously weakened and with some movement in the house over the past 2-3 years had loosened the adhesive and the veneer itself became bowed. Once I removed the veneer, the plasterboard was straight.

Maybe the plasterboard has come loose from its fixings or hasn't been screwed well enough. If the house has recently been restumped then the movement that happens afterwards and the natural settling that a house occurs may have contributed to the bulge.  

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It looks like the gyprock sheeting has come of the studs. What happens when you push really hard on it. Is the wall concaved on the opposite side? Or straight?

Can you tell us what the wall is made of? Both sides.  

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The poster said it was originally an external wall.
So if it is still original should not be gyprock or masonite.
Wouldnt think it would go like that if fibro.
But still need to be careful and test what it is first as it may be asbestos.  

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If the internal is gyprock it could bow independently of the outside. Thats why i asked what both sides of the wall are made from.

nww said: ↑
The poster said it was originally an external wall.
So if it is still original should not be gyprock or masonite.
Wouldnt think it would go like that if fibro.
But still need to be careful and test what it is first as it may be asbestos.Click to expand...
 

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nww said: ↑
So if it is still original should not be gyprock or masonite.Click to expand...
Just because you shouldn't doesn't mean it isn't.

We recently replaced an external masonite wall with modern fibro weatherboards. The wall was in terrible condition.  

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Thanks for the replies everyone.

Pa1nter said: ↑
I would be thinking white ants,
Just pull the sheeting off and have a look or cut a hole in it where the bulge is.
Another way is to get the thermal camera from the pest man in.

Walls don't bulge for nothing,:eek:Click to expand...
Shouldn't be white ants as it was cleared for them when we had the pest inspection when we bought the place two months ago.

Pa1nter said: ↑
Another thought is,if it is an older house,it could be masonite,
When it gets wet it bulges,I have seen it on lots of older buildings,
If you cut ,scrape it and it is brown underneath,then that's what it is.
You need to replace the sheet with fibro to fix it.Click to expand...
On the other side of that wall is the kitchen and there's a hole in one of of the backs of the cupboard where I can see to the other side where the bulge is and all I can see is the back of the gyprock sheeting

buzzlightyear said: ↑
Had something similar in a house I am currently renovating. The bulge made it looked like the wall had bowed significantly.

There was a timber veneer affixed onto the old plaster (glued and screwed in some places). The adhesive had obviously weakened and with some movement in the house over the past 2-3 years had loosened the adhesive and the veneer itself became bowed. Once I removed the veneer, the plasterboard was straight.

Maybe the plasterboard has come loose from its fixings or hasn't been screwed well enough. If the house has recently been restumped then the movement that happens afterwards and the natural settling that a house occurs may have contributed to the bulge.Click to expand...
No veneer sheeting or anything like that it seems. Definitely come loose from the studs though. Where the power point is the wall is still where it should be but not elsewhere.

We were thinking just the settling of the stumps as well but it quite literally appeared in the space of a day.

evand said: ↑
It looks like the gyprock sheeting has come of the studs. What happens when you push really hard on it. Is the wall concaved on the opposite side? Or straight?

Can you tell us what the wall is made of? Both sides.Click to expand...
Nothing happens if I push hard on the wall, its very solid with not much give in it. On the other side of the wall is a kitchen bench and as far as I can tell the wall/cupboards are not concaved on the other side.

The wall is definitely gyprock on the bulging side and on the other side. The original external fibre cement sheeting was replaced.  

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you say it WAS the outside of a house?

is the roof still pitched off that wall?

looks more like the wall has been overloaded and is buckling under the weight.

cutting the new window in may have removed a vertical memeber helping to hold the roof up.

i think someone's made a booboo.  

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Aaron Sice said: ↑
you say it WAS the outside of a house?

is the roof still pitched off that wall?

looks more like the wall has been overloaded and is buckling under the weight.

cutting the new window in may have removed a vertical memeber helping to hold the roof up.

i think someone's made a booboo.Click to expand...
Good point Aaron. The roof is pitched to that wall but in saying that the added on roof is built off that at a downward slope so I can't see how water would accumulate there. Might get a ladder out and see if there's plant debris up there.

I don't think anyone made a booboo when adding the room on as the window you see was the original external window. But....there is a doorway that was never there. Is there anyway of easily checking if a structural post was removed?

BTW, my apologies if bits and pieces of my posts don't make sense as I'm doing all of this on my mobile and auto-correct likes to play games sometimes.  

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I agree with Aaron.. it's probably overloaded. If you push the gyprock and it has no give in it, then it's probably not a problem in any cladding fixing, but the stud wall itself.

For a load bearing wall that's taking the main roof and the new roof, there isn't much wall there :eek: When a vertical stud member is removed for a window or door, an equal number of studs have to be added each side of the opening.. I'm guessing this wasn't done here. I'd get an engineer to check it out.  

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I had a similar problem in my house - bulging gyprock in lounge room - culprit was water, house on slab on sloping block and outside garden area was slightly higher than slab.

Eliminated the water source. Removed skirting board for several weeks to allow drying and simply screwed the gyprock back onto the stud. no probs now for over 7 years.  

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VB, I've added a couple more pictures the wall to give an idea of what the whole thing looks like as it's not only that section of wall holding things up.

Datto, I'm 99% positive it's not moisture as there is no evidence anywhere.

what puzzles me is that this bulge appeared in only a space of a few hours. If a load baring stud has been removed, and lets just say for arguments sake it was 10-15 years ago, why is this happening now?

Just mentioned the roof theory to my other half and he made a good point that if it is the roof then why isn't the other side bulging and tiles popping off the wall. Maybe it is the stumps from the room side pushing up.

Will have to give an engineer a call and see what they say.
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Excuse my husband in the photo. He was too busy cutting carpet to move.  

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hmm, I can't see the bulge front on - is it at the full height of the wall or under the window? If it's at the full height of the wall, does it bow over the full height?

Having a look at your first photos again it looks like it's only bowing over the lower half? very strange.. if it's overloaded it's impossible to bow over the lower section only.. also strange that it occured in a few hours, and years after the structural change with no new loading?? it's got me stumped :confused:

Perhaps you could hire a laser level and see if there is a difference in height of the stumps below?  

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My guess is that they applied the gyprock sheets without a gap at the top and bottom, house is resettling as a result of the re stumping and gyprock has nowhere to go but bulge out.

Cheers

PS would suggest that you don't lay carpet until you remove bulge otherwise the carpet will have been layed following the bulge.  

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vbplease said: ↑
hmm, I can't see the bulge front on - is it at the full height of the wall or under the window? If it's at the full height of the wall, does it bow over the full height?

Having a look at your first photos again it looks like it's only bowing over the lower half? very strange.. if it's overloaded it's impossible to bow over the lower section only.. also strange that it occured in a few hours, and years after the structural change with no new loading?? it's got me stumped :confused:

Perhaps you could hire a laser level and see if there is a difference in height of the stumps below?Click to expand...
It's only the lower half under the window.

handyandy said: ↑
My guess is that they applied the gyprock sheets without a gap at the top and bottom, house is resettling as a result of the re stumping and gyprock has nowhere to go but bulge out.

Cheers

PS would suggest that you don't lay carpet until you remove bulge otherwise the carpet will have been layed following the bulge.Click to expand...
After removing the skirting I think you're spot on. Looking at the picture below you can see where the nail has torn through the gyprock and for some reason it looks like its been nailed right onto the stump.

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We have since cut about 20mm off the bottom of the gyprock and the wall now quite easily goes back to where it should be. Fingers crossed this is all it was. Thanks to all who contributed!

And carpet is all good. We nailed in the smooth edge before it bulged and earlier on we were just joining the seam. Will sort out the bulge before we kick it in.  

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