Neil ashdown

https://app.livestorm.co/abloy/electrical-locking-fire-and-escape-doors?type=detailed&utm_campaign=974623_ELS 07%2F07%2F2022 Webinar e-shot&utm_medium=email&utm_source=ABLOY&dm_i=545M,KW0V,1FZFPN,2GR0Y,1

The doors should be latched and the slave leaf bolted. The installation instructions for the door leaves will provide the information about whether the doors are suitable for a double leaf configuration and about the latch you need.

The utility room becomes part of the house therefore fire and smoke compartmentation including a self-closing fire door with restricted smoke spread would be required between the utility room and the garage.

The relevant British Standard, BS 8214, states "A typical gap to achieve good fire performance is between 2mm and 4mm". Excessive door leaf to door frame gaps could cause failure of the door to meet the required fire resistance performance.

https://buildingcontrolalliance.org/wp-content/uploads/2017/04/BCA-GN-9-Fire-Doors-in-Dwellins-1-Jan13.pdf https://www.jbkind.com/uploads/pdfs/JBK_Fact_Sheet_FD20_and_FD30.pdf

Engage or consult a competent fire door inspector https://afdi.org.uk/category/find-a-fire-door-inspector/

The max gap depends on the sealing method employed. Contact the product distributor to find out the max gap/min depth and suitable substrates for the Blue60 system https://blue-60.co.uk/

Is this a flat entrance door? If so does the flat entrance door open onto a communal area inside the building? Does the door belong to you or does it belong to your landlord?

I don't believe there is one, contact the Door & Hardware Federation for advice https://www.dhfonline.org.uk/

refer to the topic here:

Different countries and geographical zones have different Standards. Which country will you be working in?

There is no straight answer! As far as I know fire doors with plugged holes have not been subject to a fire resistance test but there are some issues to consider: 1) If you plug a hole in a certificated fire door the certification for the door will be void because such work is outside the scope of the certification. 2) If you plug a hole in a fire door you should do so in the knowledge that the work you do must not adversely affect the fire performance of the door. 3) Some fire doors are made from timber so if one has a hole in it and you need to plug it, timber is a good material to use.

Doors with these self-closing devices will be subject to increased stress levels at the hinges. Therefore, whilst not an absolute requirement, installing more durable hinges would be good practice.

In terms of the threshold gap for fire doors and compliance to BS 8214: 2016, there is no distinction between doors with top & bottom pivots and doors with butt hinges.

This would depend chiefly on whether smoke seals would provide a benefit to life safety at this location. So its a fire risk assessment question.

Hi Phoebe, For fire resistance purposes the max gap is generally 10mm, so you could fit a threshold plate to the floor to reduce the gap and then fit a flexible seal to address the cold-smoke spread issue. BS 8214: 2016 sections 9.5.3 and 12.3 refer.

The applicable Standard is BS 8214: 2016 which recommends a maximum of 4mm and minimum of 2mm.

I would support the fire risk assessor's recommendation from a safety improvement aspect.

The pocket-door system has evidence of fire resistance performance referencing to an IFC Report. Ask the product supplier for a copy of that report to see how wide the scope is for the product's field of application.

If the work is done to joinery workshop standards then the repair could be suitable. Suitable timber would need to be used for the jambs, with seamless edges and faces, with no gaps or voids and fixed with suitable steel fixings to the supporting wall through the joint, at approx 100mm from the top/bottom and max 600mm centres with minimum 50mm penetration into the wall substrate. Only undertake this type of repair where you have specialist knowledge and experience including about intumescent sealing, smoke sealing and door frame to wall sealing requirements.

In terms of the requirements of BS 8214 the fire rating applies to the door.

Be careful using timber lipping. There are requirements that timber lipping has a minimum density, min and max dimensions and that a suitable adhesive is used.

A drop-seal will not resolve the issue of the door being non-compliant in terms of the 10mm gap for fire resistance purposes.

This matter is dealt with in the Standard BS 8214: 2016 https://landingpage.bsigroup.com/LandingPage/Undated?UPI=000000000000226297

Below is an excerpt from 'Fire Safety in Purpose Built Blocks of Flats' https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/1020410/Fire_Safety_in_Purpose_Built_Blocks_of_Flats_Guide.pdf A flat entrance door that opens directly to an outside area would also serve as a final exit. Therefore, as Tom says 'a fire door is not required........' unless the door is required to protect other persons or properties.