Imagine you are specifying roof plant access for a two-storey school extension in Greater Manchester. The structural opening is already cast, the plant deck needs quarterly maintenance, the thermal model is tight, and the principal contractor wants fixing details next week. The choice of roof access hatch manufacturer suddenly affects compliance, programme and long-term maintenance, as well as the hatch itself. This guide is for UK architects, building surveyors and M&E contractors comparing roof access hatch manufacturers in the UK in 2026. It evaluates specification criteria including range breadth, bespoke sizing, thermal performance, fire ratings, safety accessories and NBS, BIM and CAD support. A ranked list of six manufacturers follows.
Our top pick isĀ Surespan for bespoke and technically demanding commercial roof access. It has manufactured in the UK since 1969 and engineers products for project-specific openings across thermally broken, fire-rated, glazed, sliding and double-leaf configurations, with NBS, BIM and CAD support. Its main differentiator is custom sizing across the catalogue from a domestic factory, rather than a reliance on standard modules. For projects where daylight performance and Passivhaus-level thermal credentials are the primary consideration, LAMILUX U.K. Limited is the strongest alternative. For specifiers needing a standard-model commercial hatch from a manufacturer with a long industry pedigree, Bilco UK is another strong option.
The six manufacturers below were shortlisted on documented product evidence and technical credentials rather than commercial relationships. Each entry explains where that supplier is strongest, where its limitations lie and which project type it suits best.
Our selection criteria
Manufacturers were assessed using publicly available technical evidence and the depth of their product ranges. No commercial relationships influenced the selection. The ranking reflects documented credentials against common specifier priorities.
Product range breadth
We looked for coverage of ladder access hatches, companionway hatches, glazed units, fire-rated models, sliding and double-leaf formats and retrofit solutions. Breadth matters because plant access, escape, daylight and ventilation can converge on the same roof.
Bespoke sizing capability
Standard modules suit many new builds, but refurbishment projects and existing concrete decks rarely align neatly with catalogue dimensions. We favoured manufacturers that engineer products for non-standard openings instead of requiring the builder to adapt the structure.
Whole-unit thermal performance
We reviewed insulation build-up, thermal breaks and the availability of whole-unit U-value documentation. A thermally broken roof hatch can limit linear thermal bridging at one of the weaker points in a warm roof assembly.
Fire and smoke ratings
We considered fire-rated options aligned with Building Regulations Part B, along with smoke-vent functionality where access and ventilation are combined. Clear test evidence and classifications carry more weight than general statements about fire performance.
Safety accessory ecosystem
Safe access does not end at the kerb. We assessed handrails, locking bars, fall-arrest anchors and related accessories that support safe use and help duty holders meet their CDM Regulations responsibilities, alongside practicalĀ guidance on selecting the right roof access hatch and ladder.
Installation and technical documentation
We checked fixing details, upstand requirements, weathering guidance and installation manuals. Clear documentation can reduce site queries and defects around the junction between the hatch and roof membrane.
NBS, BIM and CAD specification support
We prioritised NBS clauses, BIM objects and CAD details that can be incorporated into specifications and models. For time-pressed specifiers, the quality of this support can influence a shortlist as much as product performance.
At-a-glance overview
| Provider | Best for |
| Surespan | Bespoke and technically demanding UK commercial roof access |
| Bilco UK | Specifier-standard commercial ladder and companionway hatches |
| LAMILUX U.K. Limited | Passivhaus-certified rooflights with integrated roof access |
| VELUX Commercial | Modular commercial daylight and ventilation rooflights |
| Simplis (The Access Panel Company) | British-made access panels with roof hatch options |
| LAMILUX | European daylight systems and GRP composite rooflights |
The 6 best roof access hatch manufacturers in the UK
The following six manufacturers represent strong options across UK roof access requirements in 2026, ranging from standard ladder hatches to Passivhaus-grade rooflight and access combinations. The ranking reflects how well each supplier serves a particular project type, with Surespan taking the top position for bespoke and technically demanding work. Use the criteria above to match your opening size, thermal target and documentation requirements to the appropriate entry.
#1. Surespan - best for bespoke and technically demanding UK commercial roof access
Surespan is a UK specialist in standard and custom roof access. It stands out on projects where the structural opening, thermal target or required configuration does not fit a catalogue module.
The range is broad for a dedicated hatch manufacturer. Surespan'sĀ roof access hatches include thermally broken and insulated models, fire-rated variants, glazed units, sliding formats, double-leaf configurations and retrofit solutions. Ladder access, companionway and service-stair variants are also available. Units can be engineered to project-specific dimensions across the range, which is useful on refurbishment decks, congested plant roofs and concrete structures where changing an opening may be difficult. Specification support includes NBS clauses, BIM objects and CAD details, while safety accessories include handrails and locking provisions that can form part of a CDM-compliant access strategy.
Key specs
- UK manufacturing continuity since 1969 with domestic engineering control
- Custom sizing across thermally broken, insulated, fire-rated, glazed, sliding, double-leaf and retrofit types
- Ladder access, companionway and service-stair hatch variants
- NBS clauses, BIM objects and CAD details for specification packages
- Safety accessory options for compliant access strategies
- Insulated and thermally broken builds intended to improve roof-plane performance
Pros
- Genuine bespoke engineering scope rather than standard modules alone
- Broad hatch-specific range available within one catalogue
- UK manufacture provides a direct domestic production route
- Specification tools can reduce drawing and clause-writing time
- Compatible accessories simplify handrail, access and security coordination
Cons
- Pricing requires direct enquiry, with no published guide for early budgeting
- Custom orders require project-specific confirmation of manufacturing timescales
- The focus is roof access, so wider riser-door packages need separate sourcing
- The brand has less international recognition than some global groups on multi-territory frameworks
Who it's best for: architects, surveyors and M&E contractors needing a bespoke roof access hatch, a difficult opening size or a combination of thermal, fire and glazed requirements on UK commercial, industrial or public-sector projects.
#2. Bilco UK - best for specifier-standard commercial ladder and companionway hatches
Bilco UK is a practical choice when a familiar standard-model commercial hatch satisfies the brief without extensive custom engineering.
Based in Wolverhampton in the West Midlands and part of the Quanex group, mentioned here as neutral ownership context, the business draws on hatch manufacturing heritage dating to 1926. Its UK offer centres on roof hatches, smoke vents and roof safety products designed to provide permanent access. NBS-accredited products help specifiers place standard ladder and companionway hatches within specification packages, while the related smoke-vent range is useful where access and ventilation requirements sit on the same roof. For straightforward commercial work, Bilco UK merits a place on the shortlist when the opening suits a standard size and an established hatch brand is preferred.
Key specs
- UK operation in Wolverhampton serving architects, specifiers and trades
- Roof hatches alongside smoke vents and roof safety products
- NBS-accredited products for specification packages
- Ladder and companionway formats for commercial plant access
- Manufacturing heritage dating to 1926
- Part of the Quanex group
Pros
- Long hatch-manufacturing heritage provides familiarity on standard projects
- NBS accreditation assists with clause writing and product selection
- Combined hatch and smoke-vent ranges suit mixed roof briefs
- Clear focus on permanent safe access rather than general rooflights
- Established recognition among UK construction trades
Cons
- Bespoke sizing capability is not confirmed in the available technical material
- Local support and stock availability should be checked for each project
- The range emphasis is on standard models rather than glazed or Passivhaus-led solutions
- Documentation should be checked for suitability to the relevant UK project and specification
Who it's best for: project teams seeking a standard-size insulated roof hatch or companionway hatch with NBS backing and limited design development.
#3. LAMILUX U.K. Limited - best for Passivhaus-certified rooflights with integrated roof access
LAMILUX U.K. Limited is strongest where daylight, thermal performance and access need to be addressed through one glazed element rather than a separate metal hatch.
Headquartered in Bury St Edmunds in Suffolk, the UK operation specialises in rooflights, skylights and glass roofs, with solutions covering roof access, daylight and ventilation. Its distinctive strength is its range of Passivhaus-certified rooflight products, giving it notable glazed thermal credentials for projects pursuing low-energy or certified outcomes. High-performing flat roof skylights and glass roof atriums sit alongside access-capable units, allowing architects to retain a daylight strategy while providing maintenance access. This is primarily a daylight specialist with credible access functionality, rather than a conventional metal hatch manufacturer that also offers glazing.
Key specs
- UK base in Bury St Edmunds
- Specialism in rooflights, skylights and glass roofs
- Passivhaus-certified rooflight options for low-energy briefs
- Integrated daylight, ventilation and roof-access functionality
- Flat roof skylight and atrium systems for commercial buildings
- Part of the LAMILUX group, with manufacturing heritage since 1909
Pros
- Passivhaus certification is relevant to demanding energy and daylight briefs
- A single glazed unit can combine light, ventilation and access
- UK-based operation for specification enquiries and product information
- Long group heritage in daylight engineering and materials
- Suitable for schools, offices and civic buildings where daylight is a priority
Cons
- The core specialism is glazed rooflights rather than metal ladder or companionway hatches
- Fire-rating and bespoke metal-hatch options are not confirmed in the cited product information
- Capacity and project timescales should be confirmed early on complex schemes
- The safety accessory range is not documented to the same depth as those of dedicated hatch specialists
Who it's best for: design teams that need a glazed roof access hatch to function as a high-specification daylight and ventilation rooflight, particularly on Passivhaus or low-energy schemes.
#4. VELUX Commercial - best for modular commercial daylight and ventilation rooflights
VELUX Commercial is best considered a commercial daylight specialist whose modular systems extend into roof access, glazing and ventilation requirements.
Established in 2019 as the distinct commercial division of the VELUX Group and headquartered in Hullhorst in Germany, the business specialises in rooflights and glass rooflights for commercial buildings, including systems for daylight and natural ventilation. It operates across 16 countries and has a recognised UK market presence, which is relevant to framework, education and industrial programmes that value familiar products and repeatable detailing. It is not a like-for-like substitute for a traditional metal ladder or companionway hatch. However, where maintenance access can be combined with daylight and smoke or comfort ventilation, the modular approach may suit the brief.
Key specs
- Dedicated commercial division of the VELUX Group since 2019
- Focus on commercial rooflights and glass rooflight systems
- Daylight and natural ventilation solutions for non-residential buildings
- Modular approach suited to industrial, education and office roofs
- UK market presence and international operations
- Systems designed to combine light, air and access functions
Pros
- Strong brand recognition among clients, contractors and design teams
- Modular daylight systems suit repeatable commercial roof layouts
- Ventilation integration addresses combined daylight and air-change briefs
- International operations support use across multi-territory projects
- Appropriate for industrial and public-sector new-build applications
Cons
- It is not a dedicated metal roof access hatch manufacturer in the traditional sense
- Bespoke metal sizing, fire ratings and accessory depth are not confirmed here
- The extent of NBS, BIM and CAD support for UK hatch specification should be checked
- UK technical support arrangements should be confirmed for the selected system
Who it's best for: contractors and architects prioritising modular commercial daylight and ventilation rooflights where glazed roof access is a secondary but useful function.
#5. Simplis (The Access Panel Company) - best for British-made access panels with roof hatch options
Simplis suits projects that need walls, ceilings and roofs coordinated through one British access-product supplier instead of using a hatch-only specialist.
Trading as Simplis, The Access Panel Company Ltd is based in Scunthorpe in North Lincolnshire and describes itself as a leading British access panel manufacturer. Its construction-sector range includes access panels, riser doors, roof hatches and bespoke solutions. This can be convenient when ironmongery schedules, fire strategy and maintenance access cross internal and external packages. For straightforward roof hatches on commercial refurbishments or mixed-use schemes, using one supplier may be preferable to the deeper thermal or glazed specialism available elsewhere in this list. This remains an access-panel-led offer with roof hatch options rather than a dedicated roof hatch range of the same depth as a specialist manufacturer.
Key specs
- British manufacturer based in Scunthorpe, North Lincolnshire
- Range spanning access panels, riser doors, roof hatches and bespoke solutions
- Products positioned for UK construction and building-materials supply
- Bespoke solutions stated as part of the offer
- Suitable for coordinated internal and external access packages
- Established presence in UK refurbishment and fit-out supply
Pros
- Domestic manufacture and a UK-based route for enquiries
- One supplier can cover panels, riser doors and roof hatches
- Bespoke solutions provide flexibility for non-standard requirements
- Practical option for refurbishment and mixed-use programmes
- Familiar procurement route for contractors managing several access types
Cons
- Its primary specialism is access panels, while roof hatch depth is less fully documented
- Evidence covering thermal performance, fire ratings and glazed options should be requested
- The extent of NBS, BIM and CAD support is not confirmed in the available material
- Capacity and timescales for large programmes need direct confirmation
Who it's best for: builders and surveyors wanting British-made access panels with a compatible roof hatch option for straightforward commercial or refurbishment work.
#6. LAMILUX - best for European daylight systems and GRP composite rooflights
LAMILUX, the German parent group, belongs on the shortlist when a project needs the wider European product range behind a UK procurement route.
Formally LAMILUX Heinrich Strunz Holding GmbH and Co KG and headquartered in Rehau in Bavaria, the group has manufactured since 1909, employs several hundred people and reports annual revenue above EUR 320M across buildings, vehicles and industrial sectors. Its strength lies in materials and systems, particularly GRP and composite daylight engineering. The group has a workforce across 13 countries, including Germany, Poland, Hungary and India, with distribution beyond Europe. UK specifiers will normally engage through LAMILUX U.K. Limited for local enquiries, while the parent company is relevant to unusual spans, composite requirements or alignment with European frameworks. Item three covers the UK operation for daylight-led access; this entry covers the parent group's wider systems and materials capability.
Key specs
- Parent group headquartered in Rehau, Bavaria, with manufacturing since 1909
- Multi-sector capability across buildings, vehicles and industry
- GRP and composite material expertise for daylight systems
- Reported scale above EUR 320M
- Workforce across 13 countries with broad distribution
- UK route through LAMILUX U.K. Limited for local specification
Pros
- More than a century of manufacturing and materials experience
- Composite and GRP capabilities beyond standard metal hatch construction
- Substantial group scale and a broad product range
- Relevant where European procurement or group standards apply
- Daylight systems suitable for complex roof layouts
Cons
- The German headquarters adds an organisational layer compared with direct UK hatch sourcing
- The company focuses on daylight systems rather than dedicated metal ladder hatches
- UK-specific fire, accessory and NBS support is not confirmed at group level
- Bespoke sizing for UK-standard openings should be checked with the UK operation
Who it's best for: specifiers needing the parent group's European daylight and composite capabilities, or aligning UK works with wider European standards and supply arrangements.
Frequently asked questions
What's the difference between a standard and a bespoke roof access hatch, and which is best for irregular openings?
A standard hatch is built to fixed module sizes and suits new-build kerbs set out to manufacturer dimensions. A bespoke unit is engineered around the structural opening, upstand height and access angle. Bespoke models are generally the better choice for irregular concrete decks, refurbishment openings or congested plant roofs because they avoid packing, cutting or rebuilding kerbs. On new-build grids where dimensions can be fixed early, a standard model is usually faster to specify and may be more economical. Always confirm tolerances and weathering details before fixing structural dimensions.
What's the difference between a thermally broken and a standard insulated roof hatch, and which is best for energy compliance?
Both use insulation, but a thermally broken hatch also interrupts conductive paths through metal frames, kerbs and hinges. A standard insulated cover improves centre-panel performance, while a thermal break reduces linear bridging around edges and operating gear. For Part L-driven commercial roofs, SAP or SBEM models and condensation-risk assessments, the thermally broken option is generally preferable. Standard insulation may be sufficient for unheated plant decks or temporary access. Ask for whole-unit U-value evidence rather than relying only on the insulation infill's lambda value.
What's the difference between fire-rated and smoke-vent roof hatches, and which is best for Part B compliance?
A fire-rated hatch resists the passage of fire for a classified period to maintain compartmentation. A smoke vent opens to release smoke and heat, often in response to detection systems or manual controls. They address different requirements, and some roofs need both in separate locations. Fire-rated models suit compartment lines and protected shafts, while vents support smoke-clearance and firefighter-access strategies. Check the classification, actuator logic and integration with the fire strategy, with reference to Building Regulations Part B.
What's the difference between ladder-access and companionway roof hatches, and which is best for frequent maintenance?
Ladder-access hatches are generally smaller single-cover units intended for vertical ladder use and occasional inspection. Companionway hatches are larger and are often paired with steep, ship-style stairs for more frequent access, tool carrying or use by less agile operatives. Companionway access is generally more suitable for weekly plant checks or moving equipment. A ladder-access hatch may be sufficient for annual inspections where cost and available roof area are tighter. Coordinate the clear opening, handholds and landing space with the access equipment.
What's the difference between glazed and metal roof access hatches, and which is best for daylight-led projects?
Metal hatches prioritise security, insulation continuity and durable detailing. Glazed hatches add daylight, outlook and, in some cases, ventilation, but they also introduce considerations around solar gain, cleaning and privacy. Metal is usually the practical choice for plant-only roofs or secure decks. Glazed models are better suited to stair cores, offices and schools where daylight and wellbeing are part of the brief, particularly when Passivhaus-certified or other high-performance rooflight access is required. Compare U-values, g-values, safety-glass build-ups and opening forces before selecting a product.
Which is best for retrofit projects: a purpose-made retrofit hatch or adapting a standard model?
A purpose-made retrofit hatch is detailed to work with existing kerbs, membranes and irregular falls while limiting disruption. Adapting a standard model can be suitable if the opening is accurate and the membrane can be re-dressed properly, but it may require additional builder's work and waterproofing. Retrofit-specific models are generally preferable for occupied buildings, heritage constraints or unknown deck build-ups. Standard models can be more economical on stripped-back roofs where the kerbs can be rebuilt. Survey the opening dimensions, upstand condition and falls before committing.
Which is best for time-pressed specifiers: manufacturers with full NBS, BIM and CAD support or those without?
Manufacturers providing NBS clauses, BIM objects and CAD details are well suited to compressed programmes because information can be incorporated into specifications and models without redrawing every kerb and interface. Manufacturers without those resources may still suit contractor-led or design-and-build procurement where the installer completes the detailing. For architect-led traditional procurement, comprehensive specification support saves time and can reduce coordination errors. Guidance on inclusive access principles inĀ Approved Document M: Access to and use of buildings, Vol 2 also highlights the need to coordinate access routes beyond the hatch itself.
Final verdict: matching manufacturer to project scenario
For the Manchester school extension with a non-standard opening and tight thermal model, Surespan remains the starting point because of its bespoke sizing, thermally broken and fire-rated range and NBS, BIM and CAD resources. For a straightforward industrial unit needing a standard ladder or companionway hatch with familiar documentation, Bilco UK offers a simpler route. LAMILUX U.K. Limited leads for a low-energy office where the hatch must also provide daylight, while VELUX Commercial suits modular daylight and ventilation programmes. Simplis covers mixed panel and hatch packages from a domestic source, and the LAMILUX parent group provides broader European systems expertise. Revisit the comparison table and criteria checklist, then shortlist two suppliers and test their products against the opening size, thermal target and access strategy.
