Incomplete party / fire wall in loft

Question

I am in the process of purchasing an end terrace property and survey has noted an incomplete fire barrier / party wall issue in the loft which mortgage lender wants fixed (as do I) - there is a chimney on the party wall blocking most of the space but large gaps either side going diagonally. Question is: what is the best way to make this fire safe & also secure from neighbour entry? What is the expected cost & time involved? Not sure if I need general builder, fire proof expert etc? Advice greatly appreciated. (Based SE London / Kent).

Michael · Accepted Answer

Brick up the holes adjoining from yours to next doors.Could fire board up once brick work is complete for extra protection

Ramunas · Answer

Hello you need fire experts for this job.as they can signe all  work done correctly and  fireproof

Will · Answer

If there is a party wall inbetween you both in the loft with a few gaps,
All you need to do is complete it in 9inch brick work jobs done,

Zec · Answer

1.	Close the gaps:
Fill the diagonal openings on both sides of the chimney with fire-resistant brick or blockwork.
If there isn’t enough room for masonry, install a metal frame and cover it with fire-rated plasterboard (fire board) or cement board.
	2.	Add fire-resistant insulation:
Behind the brick or board, insert mineral wool insulation, which is both fire-resistant and provides sound/heat insulation.
	3.	Seal all joints:
Apply fire-rated sealant or foam around all edges and joints to make them smoke-tight.
	4.	Add fire barrier strips if required:
Along the top of the party wall or where the roof meets the wall, install purpose-made fire barrier strips to stop flame spread.

Gary · Answer

It’s possible to use block work to break up the gaps either side of the chimney breast. Alternatively, can use a stud work with a fireproof board fitted in between each side of the fireplace would also comply with building regs

Christopher · Answer

You’ll need a bricklayer/ general builder to build up to the rafters in masonry small gaps can be filled with fire foam  expect to pay around £500 labour and £1.30 per brick needed  plus sand and cement cost  depending on the size of the holes  and if it’s both party walls or just one side

Paul · Answer

Their is only one way to do this properly and that’s to build up the remaining brickwork and use fire socks to close off which should help prevent the transfer of fire and smoke to the neighbouring loft.

Joe · Answer

there should be a wall coming up from the ground floor to the loft you can carry on and build the wall to the raffters that would solve your problem

Incomplete party / fire wall in loft

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