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- 21 Jul 2020
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Hi , I’ve a 1760 stone cottage , well basically it’s a bungalow with two small bedrooms in the loft,with a staircase that may as well be a ladder.
I have literally gutted the entire property back to granite and brick external walls , I have removed the one supporting wall that ran across the middle of the property and replaced it with an RSJ, I am a qualified bricklayer but my roof building knowledge isn’t good.
The cottage is 7x5 mtrs with a 6x3 mtr flat roof extension at the rear.
There are four purlins , two each side of the cottage roof and are 7 mtrs long, they are supported by doubled up 8x3 C16 bird mouthed uprights , all bolted together.
I have created a new mezzanine style floor out of 8x3 joists all bolted into a granite wall with 150 mm anchor bolts where one bedroom used to be and the other side I am having vaulted with a small spiral staircase leading to the bedroom.
I hope you’re all following me so far.
My question regards the ridge beam/plate which is basically two bits of wood butted up against each other ,well almost , there’s a 10 mm gap and under the ridge beam is another bit of wood also butted up to another bit which in essence forms and inverted T shape, the lower bit of wood only touches the ridge beam in two places and I can run my hand pretty much all the way along it between the two bits of wood.
One side of the ridge beam is supported by the 8x3 uprights and I have no worries there , but the other side where I’m having the vaulted ceiling there seems to never have been any support as the original brick wall wasn’t even touching the ridge , there was enough gap for me to get my fingers through.
I am wondering if i remove the lower bit of wood and replace it with something more beefy and stitch it all the way so there is at least two mtrs of new 8x3 wood either side of the gap in the ridge beam will this be up to the job.
I’ve spoken to roofers and the opinions are devided, two say what I want to do is perfectly fine but one says the front of the roof will lift and or spread , but I can’t see how one side can spread if the other side can’t.
Hope I’ve explained it clearly enough.
Thanks
Liam
I have literally gutted the entire property back to granite and brick external walls , I have removed the one supporting wall that ran across the middle of the property and replaced it with an RSJ, I am a qualified bricklayer but my roof building knowledge isn’t good.
The cottage is 7x5 mtrs with a 6x3 mtr flat roof extension at the rear.
There are four purlins , two each side of the cottage roof and are 7 mtrs long, they are supported by doubled up 8x3 C16 bird mouthed uprights , all bolted together.
I have created a new mezzanine style floor out of 8x3 joists all bolted into a granite wall with 150 mm anchor bolts where one bedroom used to be and the other side I am having vaulted with a small spiral staircase leading to the bedroom.
I hope you’re all following me so far.
My question regards the ridge beam/plate which is basically two bits of wood butted up against each other ,well almost , there’s a 10 mm gap and under the ridge beam is another bit of wood also butted up to another bit which in essence forms and inverted T shape, the lower bit of wood only touches the ridge beam in two places and I can run my hand pretty much all the way along it between the two bits of wood.
One side of the ridge beam is supported by the 8x3 uprights and I have no worries there , but the other side where I’m having the vaulted ceiling there seems to never have been any support as the original brick wall wasn’t even touching the ridge , there was enough gap for me to get my fingers through.
I am wondering if i remove the lower bit of wood and replace it with something more beefy and stitch it all the way so there is at least two mtrs of new 8x3 wood either side of the gap in the ridge beam will this be up to the job.
I’ve spoken to roofers and the opinions are devided, two say what I want to do is perfectly fine but one says the front of the roof will lift and or spread , but I can’t see how one side can spread if the other side can’t.
Hope I’ve explained it clearly enough.
Thanks
Liam