The Two Weekend Office Job

passive fire protection london

Friday afternoon: one office, earmarked for two meeting rooms. Add a tea point, shift the desks and hand the keys back after the second weekend. On paper, it barely qualifies as a refurbishment.

Monday’s first problem is the route for new cabling through the corridor wall. The door position shifts by half a metre. Above the ceiling, an old barrier finishes over the room next door for no obvious reason.

The floor plan has changed. The fire protection may have changed with it.

For teams searching “passive fire protection london”, the difficult jobs are not always huge developments. A modest alteration can lift the lid on twenty years of cable additions, old patches and plans that bear only a passing resemblance to the floor.

Begin with the line on the plan

Find the compartment lines on the drawings first. Then stand in the room and see whether the building still agrees. That very ordinary-looking partition could be one of them; shifting its door or drilling through it is more than a joinery decision.

The current fire strategy, compartment drawings and door schedule are useful starting points. On an older site, however, paperwork should meet reality. Previous tenants may have changed rooms, services may follow unexpected routes and labels tend to vanish during redecoration.

A short opening-up survey can save a long argument later. It is better to find the abandoned duct on Tuesday than after the joiner has built around it on Friday.

Services rarely travel alone

The drawing shows three data cables. Up goes the tile. The supposedly clear route contains a full tray, two lagged pipes and a grey service disappearing next door. It has no label. Naturally, this is the one thing nobody is prepared to switch off.

So much for the standard detail. What supports the seal? What runs through it? How tight are the gaps? Those answers narrow the options. An open tin of the usual product does not.

While the ceiling is open, take the pictures and make the decision. The decorators can wait. Putting the tile back only gives the problem a cleaner hiding place.

Watch the doors when rooms change

Move the wall and the door normally follows. That old leaf still looks respectable, so why buy it twice? Because a doorset is a bigger story: frame, seals, hinges, closer, glazing, leaf and the wall holding everything in place.

A cupboard becomes a kitchenette. The manager’s quiet office is now a meeting room with people coming and going all day. That is a different pattern of use, right down to access and escape.

Order early and trace the paperwork before the date becomes desperate. Decide who checks the installation and how later inspections will be recorded. If the closer is still on back order at handover, an escape route may be relying on an unfinished door.

Keep the building working

Then London adds the logistics. Tuesday morning brings three vans for one bay, a queue for the goods lift and the biggest client event of the year on the floor below.

Pin the noisy periods, dusty tasks and room access to actual times with the building team. Taking a protected route or door out of use? Sort the temporary arrangement before the tools appear. Beside the lift, with somebody holding it open using a toolbox, is too late for that discussion.

Smaller work zones may take longer on paper but make an occupied site manageable. They also make inspection easier. Finish, photograph and close one area properly before scattering incomplete repairs across three floors.

Leave a record that belongs to the building

Come Monday, the two rooms look settled in. Paint is dry, ceiling lines are straight and the screens have a network connection. Almost everything worth recording has disappeared behind those tidy finishes.

Give each repair and doorset a reference that appears on the drawing or register. Keep the photograph which shows where the opening is, alongside the finished close-up. Write down the system used. Could nobody see behind the fixed panel? Record that limit; do not replace it with a comforting tick.

This is familiar ground for BSML’s FIRAS-accredited team. It surveys and repairs fire doors, penetrations, compartment lines and dampers on jobs around London and farther afield.

Small job, lasting consequences

Two weekends and a modest budget do not make the consequences small. Fresh service routes cut across protected lines; the door shift changes more than the furniture plan. Sort both while the walls are open. Next year’s surveyor should not be the first person to notice.

What should be left? Two useful rooms, a workable building and enough evidence to explain the hidden changes. Nothing dramatic. Just a little job that did not quietly leave a much larger problem behind.