Fixing twinwall chimney flue brace.

[cdbe]

Best way to attach the braces?

The left side I'll drill a hole in the hip tile and stick a packer under and screw through into the rafter.

The right hand one should be about 1/3 down from the ridge.

Brackets are just little angled things to screw in and instructions are useless.

 

[noseall]

Best way to attach the braces?

The left side I'll drill a hole in the hip tile and stick a packer under and screw through into the rafter.

The right hand one should be about 1/3 down from the ridge.

Brackets are just little angled things to screw in and instructions are useless.

View attachment 398967

View attachment 398968

No one can see a flue or read your mind.

 

[Murdochcat]

What is this flue for?

 

[cdbe]

Sorry. It was clear in my mind!

It's twinwall for a wood burner. Pretty much like this

Excuse my "drawing skills":

The two braces are supposed to be 60°apart and rise from roof to flue at 45°.

The left hand one can go on the hip but the right needs fixing to a rafter in the middle of the roof.

They come with a bit of angle to fit to the rafter but no details about weathering it.

I'm half wondering about making a small "slot" through a tile and fabricating my own angled bracket and sealing with something or I'm sure I can buy something at great expense (a solar panel fixing springs to mind)?

 

[Murdochcat]

Surely the HEATAS person is the one to ask

 

[cdbe]

No HETAS involved - being done under building regs.

 

[Exedon]

When I was involved with such things we just removed a few tiles at correct point fabricate a L shaped bracket that went under tiles.
Securely screwed down bottom edge stuck up about 100mm . Tiles trimmed on underside so when replaced all laid flat.
Often used the heavier multi holed galvanised straps that were intended to hold down wallplates.
Certainly no need at all to cut holes through tiles.

 

[cdbe]

Yes, that was my initial thought but presumably quite hefty to resist bending - but if a strap is good enough I've just raided my scrap metal collection and found this - 5mm thick and galvanised.

I think the roofers will recognise it.

 

[Exedon]

Yep that would do I'd be fixing to truss or rafter rather than tile lathes.

 

[stevie888]

Yes, that was my initial thought but presumably quite hefty to resist bending - but if a strap is good enough I've just raided my scrap metal collection and found this - 5mm thick and galvanised.

I think the roofers will recognise it.

View attachment 399103

Scrap metal bin???? Surely you mean your stock of useful bits.

 

[catlad]

You'll probably need a scrap of 3x2 between the batons to raise the hip iron to the correct height, and if you grind the back of the tile it should sit flat.

 

[noseall]

Yes, that was my initial thought but presumably quite hefty to resist bending - but if a strap is good enough I've just raided my scrap metal collection and found this - 5mm thick and galvanised.

I think the roofers will recognise it.

View attachment 399103

Hip iron.

 

[noseall]

if you grind the back of the tile i should sit flat.

Correct. If only lazy solar installers could get that memo. We've don a few solar jobs and know what it is to weather brackets and enable the tiles to sit flush afterwards.

 

[cdbe]

Done.