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Our Skyline Box range of glazing bars offer an economical roof glazing solution when compared with curtain walling roofing systems. The glazing bar's strength is provided by an internal box section. The glazing bar is weathered by a screw on pressure cap (PC1) with a choice of plain (PC2) or ornate (PC3) cosmetic outer snap-on cappings to conceal all fixing screws.

When used with high performance double glazing units with warm edge spacer bars and argon gas filling this system can achieve an overall U Value of 1.4W/ m²K to comply with Building Regulation Document L.

Our Skyline range of glazing bars offer an economical roof glazing solution incorporating slim sightlines. The glazing bar's strength is provided by an internal stalk (or fin) which is cut away at the top and bottom main fixing positions.
An internal snap-on ornate capping system (PC4) is also available if desired to fully conceal the internal stalk giving the appearance of a feature timber rafter.

When used with high performance double glazing units with warm edge spacer bars and argon gas filling this system can achieve an overall U Value of 1.4W/ m²K to comply with Building Regulation Document L.

Timber rafters (supplied by the builder or joinery sub-contractor) will create an appealing visual effect inside any home and are totally protected from the effects of weathering by our externally clad Rafterline Patent Glazing system.
Due to the pleasing aesthetics of aluminium and timber materials our Rafterline system is the most popular specifiers choice for domestic projects.

When used with double glazing and thermal breaks this system is easily capable of providing an overall U Value of 1.6W/ m²K to comply with Building Regulation Document L.

Our Traditional patent glazing system remains our customers most popular choice for use on unheated spaces such as Railway Stations, glazed canopies and covered ways where thermal properties are not a consideration.
This system has been installed on thousands of projects nationwide and is available with a choice of capping systems to suit your needs.
A truly great glazing system combined with economy and a proven track record. 30,000m² of this glazing system has been installed by us on many major railway stations throughout the UK in recent times.

This system is capable of accommodating solid or multi-wall polycarbonate sheets or double glazed units up to 28mm thick if used on unheated spaces or where compliance with Building Regulations Document L are not a consideration.

Our 'Heritage' Patent Glazing Bar range is truly unique amongst roof glazing systems; there are no alternative products available on the market which can match an original lead covered steel patent glazing bar which originates from the Victorian era. This range has been manufactured by us unaltered for over a century and is the perfect product for listed buildings and for use in the refurbishment of significant and historic buildings. This system is also still very popular for new build projects and should not to be overlooked on today's modern buildings where a unique character look is desired.


Our opening vents have been designed to be operated by a wide variety of Manual, Remote Controlled and Electrical gearing and can be used for day to day ventilation and in conjunction with a BMS (Building Management System).


  • Electric Gearing
  • Manual Gearing
  • Remote Control Gearing
  • Fire & Smoke Control Systems

Electric Opening Systems

Electrically controlled systems to operate our opening vents have become the most popular devices in recent times. Reliability combined with low relative cost make electrically controlled opening vents the number one choice for the majority of projects that we undertake. The actuators can be controlled by either a simple wall mounted on/off switch or a more sophisticated control panel that can combine automatic temperature control, rain and wind sensors. On larger commercial projects the control panels can be supplied with options to open the vents in banks and can include timers and key switches or be linked to a seperate Building Management System (BMS) to allow for smoke control
There are two main types of electric actuators that are available to control opening vents. These are Linear actuators and Chain actuators.

Linear Actuators
These devices incorporate a rigid rod that is driven by the motor to open and close. The depth of a linear actuator will be at least 200mm greater than the opening stroke therefore to open a vent to a typical distance of 300mm will require an actuator that extends at least 500mm into the building space. Although these types of actuator are considered more robust than Chain actuators for roof glazing applications, aesthetics will generally require a less obtrusive device for this purpose.

Chain Actuators
These clever devices do not have a rigid rod. Instead a stainless steel chain (similar to a bicycle chain) is housed inside the unit. When the motor is engaged the chain is unwound and as it leaves the unit it becomes semi-rigid and is able to push the vent open. Due to its compact and unobtrusive design the chain actuator is considered the most appropriate choice for our roof opening vents. Chain actuators of the ACK4 series remain our first choice for most of our contracts based on pleasing aesthetics and an impressive proven history of this device. They are available in 230 volt models for general use and also in 24 volt for integration with battery back-up control panels. The electronic chain position control allows for seven opening lengths ranging from 100m to 400mm and is capable of lifting weights of up to 30 kgs. The actuator casing is die-cast and polyester powder coated in standard colours of white and black. They can also be supplied in any RAL colour for an extra cost. The electric parts are built with double insulation (therefore earth wire is not necessary) and contained in a body of plastic material to ensure a high protection level with an impressive IP55 rating.

Control Switches and Panels
All actuators can be simply controlled by a standard wall mounted on/off switch. Alternatively an increasingly popular more advanced system is available which incorporates a control panel with separate thermostatic control and rain sensor device. These can be programmed to open or close at defined temperatures and include a manual override and are also available with a remote-controlled key fob which will operate the vents by radio signal. A typical control panel or standard switch will allow up to twelve opening vents to operate simultaneously. On contracts where there are a very large number of openers we would suggest using a commercial control panel. Such a device would be capable of opening many vents, either simultaneously or divided into zones. Other possible options are to have timer controls for public buildings, wind sensors for exposed buildings and even humidity and light sensors. Some control panels are also suitable for connection to a BMS (Building Management System). The wiring of the system is always excluded from our package, as this should always be carried out by a qualified Electrician. We are able to offer commissioning on some of the more complex commercial control systems.

-ACK4 type chain actuator~white

-ACK4 type chain actuator~silver

-ACK4 type chain actuator~white/silver/black

-typical linear actuator

-Thermostatic control panel with rain sensor device

Manual Opening Systems
The most economical solution, when conditions dictate, is to control our opening lights with a manual gear. Please note that Manual gearing can only be used where the operator can physically open the vents with their hands, via a detachable mechanical pole or an endless cord. The most appropriate type that we provide is the well established screwjack gear which is available in a chrome or brass finish. The gearing device is either 150mm or 300mm long and has an eyelet attached to its base which accepts a hook attached to the detachable long arm. Once a connection has been established the user is then able to wind the handle at the bottom of the crank handle to open and close the opening light. Crank handles can be supplied in quality mahogany and chrome or mahogany and brass finishes for domestic projects and high end commercial contracts and are also available in a basic metal version.

Screwjack Gearing
The most popular types of manual gears are Screwjacks. These devices can be supplied to open to either a maximum of 150mm or 300mm in either a brass or chrome finish. They are supplied with either a neat handle (if the gear can be reached by hand) or an eyelet at the base for operation by means of a hooked detachable crank handle. Once a connection has been established with the crank handle and gear the user is then able to wind the handle at the bottom end to open and close the opening light. The gears are threaded throughout the whole shaft and as they are turned the corresponding integral threaded bracket attached to the outer frame of the opening light drives the vent open in the same manner as the mechanism of a typical nut and bolt. The detachable crank handles can be supplied in brass or chrome with quality mahogany handles for high end commercial contracts or domestic projects and are also available in a less ornate aluminium version with black and grey plastic handles.

Endless Cord Gears
Where it is not possible to use screwjack gears due to the opening lights being installed over 3.5 metres from floor level or if there is a restricted opening below the glazing an endless cord gear may be considered. These gears incorporate a 5 metre deep endless cord (10 metres in total) and are operated by pulling on either end of the cord to allow opening and closing. These devices can be supplied to open to a maximum of 300mm or 500mm.

Other Gearing types
In vertical applications it is usual to install a folding opener. These devices can be be supplied in single or double types. Our access opening lights are fitted with either pneumatic gas struts or manual hold open stays.

chrome plated screwjack gear - closed position

chrome plated screwjack gear - open position

chrome plated screwjack hand winding gear

crank handle - chrome and mahogany



Remote Control Teleflex Gearing


The need for controlling high level ventilation in buildings is universally appreciated, and wherever out of reach ventilators are incorporated there is a requirement for simple, economic and unobtrusive type of gear.
This range of products is used extensively in Schools, Hospitals, Disabled Housing, Factories and every type of Commercial Building. The Product is designed for easy fitting and is adaptable to every type of application.
The Teleflex system is based upon a unique form of cabling having an helix wire to form a flexible rack. This cable, enclosed in a rigid conduit, engages a suitably hobbed wheel in the operator and head unit, where in a push pull action, imparted by rotation of the handle, drives the mechanism to open and close the opening lights. The non-ferrous aluminium construction guarantees maximum reliability and maximum working life.
The unique “Clearline” conduit, used exclusively in all Teleflex Control opening systems has many features. Protected by a PVC outer cover, the basic construction is of tinned steel further complimented by Rigidex’ low friction liner. On-site decisions regarding conduit routing can be made to suit the prevailing conditions.
A mechanically irreversible action allows the screwjack to be utilised for heavy applications where its design enables a considerable reduction on load on both the window gear and the operator.
The wall mounted winding handles are supplied in a white polyester powder coated finish to match the screwjack openers and feature No-back clutches for security and wind loading.
Teleflex Gearing is installed after the completion of the Patent Glazing by one of our specialist Teleflex sub-contractors.
The gearing is face-fixed to finished surfaces, which must be fully decorated prior to installation.
Safe access must be provided by the Contractor/Client to allow the cable to be installed between the bottom of the ventilators and the pre-determined operating handle positions.


The Teleflex Screwjack gearing mechanism with conduit and rotary wall mounted handle


remote controlled opening vent.


Fire & Smoke Control Systems


Based on our experience with specialist smoke and ventilation sub contractors, we have outlined below important points regarding fire and smoke controlled systems.
Fire and Smoke control systems require a far greater input from the specifier or client compared with the normal ventilation products that we offer.
Before specifying and procuring a smoke ventilation control system, we would ask you to give full consideration to these points.

1. For system longevity and performance it is critical the control system is subject to regular maintenance. BS7346 specifies a twice annual maintenance for smoke ventilation products of this nature.

2. Ventilator controls that are to be used and operated under a fire and smoke situation (in addition to natural ventilation) will always require an emergency power supply (battery backup).

3. The Building Control officer and Fire officer must also be satisfied with the level of smoke ventilation in the building as a whole (the glazing must not be a standalone item), and many criteria can affect the level of ventilation required.

4. The Smoke ventilators to the patent glazing may form part of a Building Management System (B.M.S) and therefore may be required to be compatible for inclusion within the concept as a whole.

Our general policy is for the Specialist responsible for the supply of all fire and smoke control systems to "free issue" The Standard Patent Glazing Company with the correct type and number of Smoke Vents, so that our installation team can incorporate them into the glazing system only - (totally exclusive of electrical work and wiring etc).

The smoke vents are then ready to accept the electrical connections of the specialist. Then at a later, pre-arranged date, the system will be commissioned by the specialist, prior to handover.

By the above means the guarantee for the system will rest with the supplier/installer and split responsibility will not inconvenience the final building user.

If the Designers are satisfied that the number of ventilators and sizes of each unit are sufficient for the smoke ventilation requirements for the building, then we may be able to offer the supply of a smoke control system based on information in the Tender Drawings and any specifications in your possession.

Due to the nature of this work, we would look to Sub-Let the works to a recognised Specialist Smoke and Ventilation Sub Contractor.


typical smoke control panel from Vent Engineering Ltd