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Riser shafts run through every floor of a multi-storey building — which makes the riser door possibly the most important access door in the building for compartmentalising the spread of fire. It’s also the door architects fight hardest to make disappear: specified flush to the corridor wall, drawn seamless, and then too often delivered proud, packed out on site, fire-stopped with mastic, and dented by following trades before handover.
The specification intent is right. What defeats it is everything that happens between the drawing and the finished wall — inaccurate apertures, improvised packers, and a fire-stopping detail left to whoever is standing nearest.
MF Services supplies and installs fire-tested steel riser doorsets from leading manufacturers — matched to your project’s wall construction, fire strategy, acoustic requirements and finish, rather than to one factory’s catalogue. Because riser openings vary — blockwork, shaftwall, precast, studwork, awkward opes, oversized plant access — the right doorset is a specification decision, not a default. Here’s what to look for, and how we help you get it right.
bi-directional fire rating, tested to EN and BS standards in UKAS approved laboratories
acoustic-rated options up to 47dB Rw, for risers beside bedrooms, wards and meeting rooms
single doors to multi-leaf doorsets for large plant and services openings, supplied as complete units
doorsets and frame options tested into studwork, masonry and shaft wall constructions
Irish fire safety design works from compartmentation: Part B of the Building Regulations expects fire to be contained where it starts, and a riser shaft is the one void that connects every floor. The riser door protects that opening from both sides — preventing fire entering or escaping the shaft and spreading through the building. The doorsets we specify carry bi-directional fire ratings of up to 2 hours, tested to EN and BS standards in UKAS approved laboratories, with certification available for every doorset we propose. Smoke-sealed (S-rated) and thermally insulated options are available where the fire strategy calls for them — and in fire situations, steel doorsets will outperform timber door sets.
Two things are worth asking about that most specifications miss. First, whether the rating is bi-directional — a riser door can face fire from either side, and not every doorset is tested both ways. Second, for shafts opening onto escape corridors, whether a radiation-limiting (EW-classified) doorset is warranted — one that limits heat radiation as well as maintaining integrity, so the corridor stays passable, not just smoke-free. Few standard riser doors offer this; we can advise where it’s available and where it earns its place.
But a fire rating is only as good as its installation. A doorset packed and bodged into an out-of-tolerance aperture isn’t the doorset that was tested — and fire ratings are expressly subject to the wall construction and the installation complying with the manufacturer’s instructions. That’s why the frame system matters as much as the certificate, and why it belongs in the specification rather than being left to site.
Site apertures are never as true as the drawing. The difference between a flush riser door and a proud, packed-out one is usually the frame system — which is why we specify doorsets with adjustable frames that can be levelled and plumbed within the opening, correcting for out-of-tolerance apertures without resorting to improvised packers and mastic. The result is a doorset installed the way it was tested, with a leading edge that sits genuinely flush.
Just as important is matching the frame to the ope structure and the finish detail: blockwork and precast need different fixings and liner details than studwork or shaftwall; a wall that’s plastered after installation wants a different frame profile than one that’s already finished. We’ll recommend the right combination for each opening on the schedule — and our own teams install nationwide, so the detail that was specified is the detail that gets signed off.
Steel riser doors are finished in paint-ready powder coat as standard, ready to take the wall colour — with options to emulsion or wallpaper directly over the leaf, or order factory-finished colours to match the scheme. Frame profiles run from concealed beaded frames that plaster right up to the door edge, through clean picture-frame surrounds for finished walls, to minimal safety-edge details and raised profiles for pre-plastered walls — and no-threshold options let the door sit down onto the floor or skirting.
Security and everyday use are handled just as quietly: multi-point locking with Euro-profile cylinders, stainless steel ironmongery, heavy-duty pivot hinges, and concealed-keyhole options — so the wall reads as a wall, not as a door.
Datasheets, frame and fixing details, acoustic and fire test documentation and installation guidance are available for every doorset we propose. Tell us your wall build-up, fire rating and finish requirements and we'll send the right documents for your specification — usually same day.
The point of a flush riser door is that nobody notices it. Adjustable frames level and plumb the doorset without packers or mastic, concealed beaded frames plaster up to the door edge, and paint-ready finishes take the wall colour — so the corridor you drew is the corridor that gets built.
Bi-directional fire ratings up to 2 hours, tested to EN and BS standards in UKAS approved laboratories, with S-rated smoke options and acoustic performance up to 47dB Rw. Every doorset we propose comes with its certificate trail.
MF Services supplies and installs riser doors nationwide — site survey, doorset selection, supply, installation and technical support as one package, with CAD/BIM drawings and full specifications on request. Not a set of parts left for someone else to make work.
Up to 2 hours, with bi-directional testing available — the door protects the riser opening from both sides, preventing fire entering or escaping the shaft. Doorsets are tested to EN and BS standards in UKAS approved laboratories, and we provide the certification with every proposal. Ratings are subject to the wall construction and the installation complying with the manufacturer’s instructions — which is why we install what we specify.
Smoke-sealed doorsets tested to BS EN 1634-3 (S-rating) and thermally insulated options are available, along with acoustic ratings up to 47dB Rw for risers beside bedrooms, wards and meeting rooms. Tell us the adjacencies and we’ll match the doorset to them.
From single access doors to multi-leaf doorsets for large plant and services openings — supplied as complete units, with multi-leaf sets shipped in sections for handling on site. Send us the structural opening sizes and we’ll confirm options.
Two things. An adjustable frame system corrects for out-of-tolerance apertures so the frame goes in level and plumb without packers. Then the frame profile does the concealment: beaded frames plaster right up to the door edge, and paint-ready finishes take emulsion or wallpaper directly.
Studwork, masonry and shaft wall partitions — with frame and fixing details matched to each. The partition itself must meet the required fire performance; we advise on the wall build-up as part of the specification.
Yes — from early design through to installation and aftercare, nationwide. Send us drawings or a door schedule and we’ll come back with proposed doorsets, datasheets, CAD/BIM drawings and indicative pricing — or arrange a site survey.
Apartments, build-to-rent and student accommodation stack riser shafts through every floor of sleeping accommodation. The riser door is the compartment line between a contained incident and a building-wide one — and in a corridor residents walk daily, it also has to disappear.
Services-heavy commercial floors mean frequent riser access for maintenance and fit-out — doors that get used, not just inspected. Multi-point locking, concealed keyholes and a finish that holds up keep the riser secure and the corridor looking designed.
Hospitals, care settings and schools carry the heaviest compliance scrutiny and the busiest corridors. A certified doorset with a clean certificate trail — fire, smoke and acoustic — makes the fire officer's job easier and the specification defensible for its whole life.
Whether you’re at concept stage or finalising a door schedule, we’ll help you get the riser detail right first time — doorsets, frame types, finishes and installation as one specified solution. Send us drawings, a sample specification or an outline of the project, and we’ll come back with recommendations, datasheets and indicative pricing.
You’ll also find us at Architecture Expo 2026, Stand B25, RDS Dublin, 7–8 October — come and talk riser details, wall build-ups and door schedules with the team in person.
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MF Services
Unit 26 Doughcloyne Court Industrial Estate,
Sarsfield Road,
Wilton, Cork, Ireland.
