Fixing Big 6 fibre cement ridge caps to fibre cement roofing sheets

[JohnDeere8530]

Have an old animal building with an open ridge

I have lots of ridging caps that will fit. However they aren’t long enough to bolt to the two timber purlins just each side of the ridge

I know you shouldn’t bolt fibre sheets together, however are there any fixings that may be able to do this ?

I understand that cracking may occur when building moves a bit (if it moves)

it’s about 40m span so I didn’t really want to buy new longer caps

Anyone any ideas wrt fixings ?

 

[grainboy]

More purlins ?

 

[JohnDeere8530]

More purlins ?

Not easily possible as a lot of work

 

[steveR]

Have an old animal building with an open ridge

I have lots of ridging caps that will fit. However they aren’t long enough to bolt to the two timber purlins just each side of the ridge

I know you shouldn’t bolt fibre sheets together, however are there any fixings that may be able to do this ?

I understand that cracking may occur when building moves a bit (if it moves)

it’s about 40m span so I didn’t really want to buy new longer caps

Anyone any ideas wrt fixings ?

Picture or drawing??

 

[Bald n Grumpy]

Not easily possible as a lot of work

Can't you screw extra timbers to the sides of the purlins ?
How wide is the gap, can you reach through to fix the caps or will you have to get on the outside of an old roof to fix?

 

[davidroberts30]

Have an old animal building with an open ridge

I have lots of ridging caps that will fit. However they aren’t long enough to bolt to the two timber purlins just each side of the ridge

I know you shouldn’t bolt fibre sheets together, however are there any fixings that may be able to do this ?

I understand that cracking may occur when building moves a bit (if it moves)

it’s about 40m span so I didn’t really want to buy new longer caps

Anyone any ideas wrt fixings ?

drill a 9mm hole and m8 bolt with locknut them together but not tight?
hole clearance will allow some movement

 

[steveR]

Can't you screw extra timbers to the sides of the purlins ?
How wide is the gap, can you reach through to fix the caps or will you have to get on the outside of an old roof to fix?

That is exactly what I thought... Screw or bolt them.

 

[JohnDeere8530]

I like the idea of an over sized hole with a nut and bolt. However a ball ache inside holding the nut.
I’m thinking a tek screw as a real bodge however doesn’t allow for any movement

 

[organicguy]

I ended up with some fixings which we use in the side of roof lights to stop flapping on the side.
M6 nut bolt and washer with the nut set in a piece of rubber. Wind in the bolt and the rubber pulls up like a pop rivet.
Put in from top so no fiddling.
No idea what they are called or where they came from.

 

[Nearly]

'laplocks'

Pardon our interruption...

You might want to put caps on them too.
They look like Darth Vader's helmet

 

[organicguy]

'laplocks'

Pardon our interruption...

That's them!
Great on side of roof lights.

 

[Nearly]

That's them!
Great on side of roof lights.

and a box of dust masks and a roofing ladder.

 

[JohnDeere8530]

Those rubber jobbies look ideal. Thankyou

 

[briarwoodproducts]

If you are looking for Lapstitch fixings, we've got them available on our website