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Conservation Vent Grilles

Cast Iron Air Brick Company

Designed by The Cast Iron Air Brick Company, this stunning grille was transformed from a concept to "a work of art" by North Devon based, pattern maker, Peter Hoole in 2010 and is now cast in West Midlands. With over 2000 sold, its fast becoming "the" conservation vent for listed and period properties and is now available with a 5" diameter(125mm) spigot as well as the original 4" diameter (100mm). Supplied in traditional black or primed for contractors to colour co-ordinate to owners requirements on site.

Vents Any Colour

Cast Iron Air Brick Company

Take one look at our website and customers would be forgiven for thinking our grilles are only available painted in one colour - black. They can of course be supplied bare metal to go rusty in many cases as another option but black is our standard colour. That said we supply vents and air bricks painted in a huge range of RAL colours. These cant be ordered direct from the website and there is an additional cost but they can be turned around in a week or so. Please email for more details

Stove Vents, Log Burner Vents and Cast Iron Oven and Range ventilators

Cast Iron Air Brick Company

The Stove and Fire Vent is the ideal interior vent to compliment a log burner or stove. The cast iron body is available in a polished pewter effect, which has been hand finished by us in our workshop or can be purchased bare metal for contractors or property owners to finish on site. The pewter finish stove vent will enhance any interiors. When the 100mm spigot is connected to an air source it provides 3000mm2 of free area for combustion air for a room fitted with a log burner or stove up to 10KW. Double up for larger appliances.

Cast Iron Cellar and Basement Vents

Cast Iron Air Brick Company

Originally used during Victorian and Edwardian period as sewer vents or "stench flaps", these cast iron vents with 100mm round spigots are making a bit of a come back. We've replaced the flaps (that used to allow air in but not out) with mesh so air flows freely in both directions and they've become quite a hit with specifiers ventilating basements and cellars and new builds. As well as sending a shipment to Abu Dhabi we've also had orders from closer to home - Travis Perkins, Midas, Bryen & Langley and 800 Group

New Larger Conservation Vent with 150mm spigot

Cast Iron Air Brick Company

Almost ten years since introducing the CON4 100mm conservation we are now adding to our collection of conservation vents with the CON6 which is our biggest yet. With a massive 150mm diameter spigot and a free area that is 50% larger than the next size down, it's sure to be a hit with many property restorers looking to add plenty of ventilation with a stunning looking vent that will last a lifetime.

Top marks for Bilco Smoke Vents at University of Hertfordshire

Bilco UK

Ninety UDF-50 REM Bilco Natural Smoke and Heat Ventilators (NSHEVs) were installed in a large scale accommodation development at the University of Hertfordshire. The development at the College Lane Campus comprises a mixture of individual bedrooms, twin rooms and studios. All of Bilco’s NSHEV products are manufactured to the highest possible standards, are CE Marked and meet Construction Products Regulation 305/2011. At 1500mm x 1620mm Bilco’s double leaf UDF-50 REM Smoke Vents offer a 1.5m2 clear vent area – making them ideal for dwellings of multiple occupancy such as halls of residence.

Glazed AOV Smoke Vent - London

Surespan Ltd

140° degree opening glazed smoke ventilation up to 3m x 1.2m. Here installed and commissioned in a newly upgraded prestigious London address. CE Marked and Certified to EN 12101-2. The AOV features concealed actuators along with a double glazed top. 1.5 W/m²K Double Glazed Lid Custom made to any size up to 3m x 1.9m

Bilco Roof Access Hatches & Smoke Vents Chosen for the Glasgow Transport Museum

Bilco UK

Bilco UK’s special zinc-clad Roof Access Hatches and Smoke Vents chosen for the Zaha Hadid designed Glasgow Transport Museum, Scotland. The roof specification included Smoke Vents and Roof Access to blend with the roof finish. Bilco supplied modified units with zinc cladding to achieve the desired look. To enable safe roof maintenance, a modified E-50T Hatch was supplied and installed to the 46 degree sloping roof enabling maintenance staff to gain easy, safe access to roof equipment

SIEGENIA vents now available in Trimble Nova software

Siegenia-Aubi Ltd

The data sets for SIEGENIA's ventilation units can now be found in the CAD/CAE software Trimble Nova. This enables architects and planners to carry out easy and reliable planning with the facade and wall-mounted ventilator data as well as components contained in the software.

4 Building Regulations you need to know about before installing a smoke vent

Trade Access Panels

There are a lot of different official documents about the rules and regulation around fire safety and smoke ventilation, which, in turn, influence the way you should choose and install your AOVs. Building regulations are minimum standards that apply to almost all new residential and commercial buildings, and also alterations to the existing ones. If you are planning to use an Automatic Opening Smoke Vent (AOV) System in your project, you will have to comply with the regulations mentioned.

Landfill Cap Drainage & Gas Venting - Pozidrain, Chelson Meadows, Landfill Site, Plymouth, UK

ABG creative geosynthetic engineering

For more than four decades Chelson Meadow was the main landfill site for the Plymouth area. An estimated 17,650,000 tonnes of landfill needed capping with a permanent geosynthetic capping system. The capping commenced in 2005 and had to be closed by 2012. ABG Pozidrain 6S250/NW8 was installed above and below Claymat GCL to provide drainage, gas venting and adequate protection. Pozidrain provided the required flow capacity and interface shear strength. Gas from the site was harnessed to be sent back to the national grid to be used.

7 things you need to know about Coxdome Firejet JetCox SHEV Unit Smoke Vent

Trade Access Panels

AOV or Automatic Opening Vent systems control the airflow of smoke in a fire. According to EN12102-2 it is a statutory requirement to have an AOV unit on a new construction. Since 2006, Europe has required that the AOVs meet with the standards set forth in DIN EN12102-2. As a result, many companies have made their versions of AOVs. Majority of these options only go as far as barely meeting the before stated regulations. However, the Coxdome Firejet SHEV exceeds the expectations and requirements of a standard AOV.

New AOV for Smoke and Fire Safety

Surespan Ltd

Surespan 140° thermally broken aluminium smoke ventilator and roof hatch designed to EN12101-2. The AOV also offers push button comfort ventilation in one package! This one stop solution for smoke vent requirements to meet building control can achieve 1m² airflow and is available in standard stocked sizes or made to any size in between 900 x 900 and 1260 x 1260. Smoke vents come with wind deflectors to improve airflow. - RE 1,000 Ventilation and 10,000 Vent - Offset mechanism for Roof Access - Snow Load SL500 - Wind Load WL1500 - Temperature Class T (-15°) - Fire Resistance B300

Cast Iron Rainwater and Drain Outlet Cowl

Cast Iron Air Brick Company

Before there was an open, 4" (100mm) diameter pipe that drained water from the back of this Devon farm house into the yard. Apart from an open pipe, which never looks good on a listed building, when it rained heavily there was water gushing out across the road causing havoc to any cars parked nearby. With the installation of the cast iron cowled conservation vent now the water is deflected downwards and the opening is no longer open to the elements and in eye line. With a choice of 100mm or 125mm spigots this cowled vent has many uses

Profile 22 Optima Chamfered Windows used in a social housing development in Telford

Profile 22 Systems

Nuplace are a quality lettings company, owned by Telford & Wrekin Council. It secured planning permission to build 39 new homes on a site in Telford. The window specification was for a White chamfered profile that could achieve an overall U value of 1.4 W/m2K. SBD accreditation was a requirement AND PAS24. The site’s location near a busy road meant acoustic glazing was required on some elevations. Trickle vents were required on some windows, including those with acoustic glazing requirements, which meant non-standard acoustic trickle vents were required.

Sudbury House


Sudbury House is a building that was identified shortly after the Grenfell tragedy as having flammable cladding and inadequate smoke ventilation. Sertus Façade Louvre Blade smoke vent windows and Sertus control panels were identified as the best fit. Fully certified to EN standards, these attractive windows open to 90 degrees in under 60 seconds when triggered, and are designed for installation into facade apertures or curtain walling. Louvres were also fitted to the head and entrance levels of the stair cores, a single leaf vent installed in the lobby. Finally, firefighter’s priority switches were installed on every level.

Capital Hill Sandton

SE Controls

A new prestige office development in Sandton, Johannesburg is using a combined smoke and natural ventilation system, involving automatic window vents in the building’s elliptical glazed central tower, which is actuated and controlled by an integrated solution from SE Controls Africa.

FAKRO roof windows at the London Ideal Home Show

Fakro GB Ltd

A show home at the 2016 London Ideal Home Exhibition featured 22 FAKRO FTP non-vented roof windows. The Arc, by The Green Unit, demonstrated modular, eco construction which can be used for residential, commercial, education, leisure and a host of other purposes.

Smythe Library, Tonbridge School

Kawneer UK Ltd

The £3.6 million refurbishment of a library at one of Kent’s most prestigious independent boys’ schools features Kawneer’s AA®100 mullion-drained curtain walling with bespoke fin caps and AA®541 concealed vents along with AA®720 entrance doors on a stunning new 13.5m high circulation tower topped by an AA®100 rooflight.

John Bradfield Centre, Cambridge

Kawneer UK Ltd

Kawneer’s AA®100 SSG (Structurally Silicone Glazed) curtain walling, with AA®720 doors and open-in side-hung vents, form the main structure to the two main facades of the £20 million John Bradfield Centre hub building at the 151-acre Cambridge Science Park, Europe’s first science park, owned by Trinity College Cambridge.

Changi International Airport

Kingspan Light + Air

Kingspan Light + Air worked on project jewel at Changi International Airport in Singapore. One of the most innovative project features is the distinctive dome-shaped facade, made entirely of glass and steel. Our team worked with the architects and project team to specify and install over 100 Lumera ventilation windows. The Lumera ventilation windows also operate as an integral element of a wider Smoke and Heat Exhaust Vent (SHEV) system.

Millenium View, Coventry

Aluprof UK

The building comprises of 3 sections, varying in height with retail space on the ground floor and student accommodation from the 1st to 10th floor being operated by Unite Students, which runs student accommodation sites across the UK. The project utilises Aluprof MB-SR50N capped curtain walling and inward opening vents with an external mesh to prevent objects from being release at high level from inside the building.

Bespoke combined Roof Access and AOV

Surespan Ltd

London Architectural Glazing worked on a project which had a requirement for a huge 4700 x 1300 Smoke vent with access however due to EN12101-2 testing, Surespan only have CE Certifiction up to 1800 x 3000mm. Therefore we came to a solution which involved combining a large 3628 x 1300 electric roof hatch with a separate 1300 x 1218mm SRHE/AOV unit combined into one frame.

Low roofline installation from FAKRO proves the perfect window option

Fakro GB Ltd

Dualchas Architects’ design of Taigh Learaige in Stanley, Perthshire shows the benefit of being able to install FAKRO roof windows at varying depths. The visual aesthetic is greatly enhanced by their low profile in a structure which takes the timber from the roof into the walls with no visible rainwater goods. Eight non-vented, triple-glazed FTV U5 centre pivot windows were used with thermal combination flashings and XDP fitted underfelt collars around each window.

One Canal Parade, Cardiff

Kawneer UK Ltd

Two versions of Kawneer’s AA®100 curtain walling – mullion-drained capped and SSG (Structurally Silicone Glazed) - were used on One Canal Parade in Cardiff city centre. These were complemented by Kawneer’s AA®540 fixed lights, AA®720 bottom-hung, outward-opening vents for smoke ventilation, series 190 heavy-duty commercial entrance doors and aerofoil caps integrated into a Brise Soleil system.

Bilco UK supplies bespoke NSHEV for multi-storey hospital car park

Bilco UK

The massive development of the Addenbrookes Hospital site in Cambridge has seen the construction of several new buildings over the last few years. The most recent part of the project saw Bilco UK supply special size Smoke Vents for the new nine-storey car park at the hospital. This project, undertaken by Vinci Construction, has created 1,228 new parking spaces to meet growing demand at the renowned medical facility as it expands to accommodate the relocation of Papworth Hospital.

Natural & smoke ventilation at Southway and Charter

Dyer Environmental Controls Ltd

Dyer and Fieger combined to install a new smoke vent louvre system in 2 high rise blocks in Eccles. This EN-Certified smoke louvre provides a more effective smoke ventilation system whilst proving a similar and safer natural ventilation solution, especially at high level. Dyer Environmental Controls worked closely with Fieger in order to develop a bespoke design. Together, Dyer and Fieger provided a practicable solution to meet the combined requirements of Approved Document B and Approved Document K.

In parts dating back over 400 years, Market Hostel is sensitively restored with 21st century steel windows

Clement Windows Group

Clement were thrilled to win the job of manufacturing and installing their windows into the remarkable Market Hostel which occupies a position on the edge of Market Square, Cambridge. The versatility of EB24 meant these windows could be used for the project in two completely different styles. EB24 with clear glass, single point locking and top hung vents was specified for the more recent parts of the building, whereas EB24 and genuine steel T bars were specified to replicate the original design of windows in the most ancient parts of the building.

Flame-Free Roofing System Supplied Due to Sensitive Contents


No timber was allowed as part of the new refurb to conform to FM Global (Airbus Insurers) regarding system fire rating. IKO recommended an overlay on the existing deck, which complied with all the latest British Standards and Regulations. IKO Mach One System was chosen as it provided a flame-free System. Where detailing was difficult IKO Polimar EC/UV System was used. The roof refurbishment also included the installation of smoke vents, associated smoke control panels and accessories.

Liquid and Bituminous Multi-System Project - Airbus, Stevenage


22,000m2 Flame-Free System Used in Sensitive Industrial Refurbishment Improvement was necessary to improve roof and gutter surface water clearance. IKO recommended an overlay on the existing deck, which complied with all the latest British Standards and Regulations. IKO Mach One System was chosen as it provided a flame-free System. Where detailing was difficult IKO Polimar EC/UV System was used. The roof refurbishment also included the installation of smoke vents, associated smoke control panels and accessories.

National Memorial Arboretum, featuring Reynaers aluminium curtain wall

Reynaers Ltd

The new centre, sympathetically designed by the prestigious Glenn Howells Architects, uses Reynaers’ CW 60 modular curtain walling, Vision 50 door system, ES 50 Eco System door, CS 68-HV Hidden Vent window and CS 77 doors. It was built by contractors Stepnell and the consultant was Wintech Ltd. With a large restaurant and shop, separate coffee shop and beautiful cloistered courtyard with garden, it’s hoped that the new centre will attract hundreds of thousands of new visitors to the Arboretum.

Door Step and Below Door Ventilation

Cast Iron Air Brick Company

Looking down for architectural features in any Georgian town and as well as coal hole covers, manholes and the like you'll see all manner of air bricks and grilles, mostly for sub floor ventilation in property walls. Here is an illustration of a cast iron vent underneath a front door in Regency Bath. Like many it's in a pretty poor state. This one's patched up with steel plate and it's suffocating, what is a key part of the ground floor causing damp. Prevent damp in period property basements and below suspended floors...

Sounding out multi-purpose venues

Troldtekt A/S

The Folkehuset Absalon in Copenhagen is an excellent example of the growing trend towards multi-use and multi-purpose cultural social centres. Designed to promote community cohesion with a flexible space to accommodate a variety of activities and services, multi-purpose venues are used to support everything from sport, leisure and learning through to childcare, heritage, culture, elderly needs, tourism, pop-up shops and events. This award-winning project by Arcgency architects has taken a former Church with its high ceilings and transformed it into a flexible community centre with ‘living-room’ feel.

Lycee Lucie Aubrac High School

Kingspan Light + Air

The new Lycee Lucie Aubrac high school in Paris is an environmental friendly building with a Net ZeroEnergy objective, to reach a neutral balance between energy consumption and production. The premises are organized around a long inner street, covered by a monumental glass rooflight. The smoke ventilation and natural ventilation system provided and serviced by Kingspan Light + Air, is designed with 26 units of Kingspan Optima louvred windows integrated into photovoltaic glass rooflight, as well as façade air inlets. The opening smoke vents were connected to STG control panels - MZ2 and Compact.

Showing 1-36 of 141