Skylights, rooflights and roof-mounted solar panels have become standard features on many new-build homes, driven by daylighting requirements, Future Homes Standard targets and buyer demand for greener, brighter properties. However, as these glazed elements have grown larger and heavier, so has the challenge of getting them onto the roof safely.
Tom Spence, Managing Director at 4 Cladding Services, explains why compact glass vacuum lifters give housebuilders a safer, faster way to install using plant they already have on site.
A growing number of housebuilders are now using glass vacuum lifting equipment on their developments. These purpose-built pieces of equipment allow glazing and solar panels to be lifted, positioned and installed without the manual handling risks that have historically been associated with conveying heavy, fragile units onto roofs and other hard to reach places.
Rooflights and solar panels are awkward loads. They’re heavy enough to strain a two- or three-person lifting team, but fragile enough that a slip, a knock or an uneven grip can mean an expensive breakage or, worse, an injury. On a housebuilding site, where trades are moving quickly between plots and schedules are tight, that combination of weight and fragility is a real concern.
Vacuum lifters remove much of that risk. A suction pad grips the surface of the glass or panel, distributing the load evenly and eliminating the twisting, gripping and repositioning that manual handling demands. The glazing unit can then be raised, rotated and set down with precision, whether that’s positioning a rooflight into an upstand or angling a solar panel into its frame.
A compact option for lighter loads
Not every housebuilder needs the largest glass lifter and that’s where a smaller unit like the Glass Boy GB-L comes in. Built by VIAVAC, it is the smallest lifter in the Glass Boy range, designed specifically for lighter glazing work, making it particularly relevant to the housebuilding sector.
It has a standard carry weight of 250kg, which can be extended to 500kg with additional attachments, making it well suited to the kind of rooflight and solar panel units typically specified on residential developments. Its dual-circuit vacuum system, low vacuum and low battery warning systems, plus 360° rotation with lockable positions to give installers precise, secure control over the load. And because it’s built for smaller, more manoeuvrable applications, it’s designed to work with the more compact plant that’s practical to bring onto a housing site, or is there already, rather than requiring the heavy-duty crane capacity that larger commercial glazing projects call for.
That’s an important distinction for developers because they have lifting plant on site for general construction purposes, so it means glazing installation doesn’t need to become a separate, specialist logistical exercise. It’s worth checking the specific crane and rigging requirements for any lift with the equipment supplier before work begins, since capacity and configuration will vary from site to site. However, products with a compact footprint and lighter capacity are designed with this kind of flexible, site-based use in mind.
The units also come with a dedicated storage and transport cradle, so it’s easy to move between plots or back to depot without specialist handling equipment of its own – a practical consideration for developers managing multiple sites at once.
Safety has to come first
Whatever the scale of the lift, safe use of vacuum lifting equipment depends on more than just the machine. Site teams need to check weather conditions before lifting: wind speeds above 18mph or temperatures below 0°C can compromise vacuum suction, whilst glass should never be lifted wet. Operators also need to confirm that the lifter’s rated capacity and pad spread suit the load in hand, since exceeding the limits of a machine, or failing to cover enough of the panel’s surface, increases the risk of the load detaching mid-lift.
Beyond the equipment itself, proper training is essential. Operators should understand how to carry out pre-use checks, position the lifter correctly above the load rather than from the side, test the vacuum seal before lifting fully and never leave a suspended load unattended. Loads should also be transported at the lowest practical height to minimise the consequences of any failure. These aren’t complex procedures, but they do need to be built into site routine. A reputable supplier will be able to guide you in all these safety aspects and operator instructions to ensure a safe, efficient use of the equipment.
Up and away
For housebuilders looking to use the benefits of rooflight and solar panels to sell more properties, a glass vacuum lifter makes a lot of sense and a practical entry point. It reduces reliance on manual handling, cuts the risk of costly breakages and speeds up what can otherwise be a fiddly, time-consuming stage of the build.
We offer a range of compact glass lifters as well as the wider Glass Boy range for both hire and purchase, alongside free operator training and ongoing maintenance and servicing to LOLER standards.
For developers weighing up whether glazing lifts should be handled with hired-in vacuum equipment or left to specialist trades, it’s worth talking to a supplier directly about the loads, glass sizes and site conditions involved, to establish exactly what capacity and crane support a given project will need.
More case studies and technical guidance are available at: https://www.vaclifting.co.uk/