Anti Slip Glass for Walk On Glass Floor and Rooflights

What is Anti Slip Glass?

Let us explain what Anti Slip Glass really is. Glass can become slippery when wet, that part is easy to understand. Common sense should be applied when specifying this material for walk on applications such as walk on rooflights. This is of particular importance when the glass is being installed where the public can access it.

On a private dwelling, it is less likely that the glass will be used if it is raining. However, the same cannot be said for commercial and public applications.

Applying an anti-slip glass surface finish to glass that is designed for walk-on applications should always be considered. The same finish can also provide some obscurity to the glass if required.

A screen-printed frit that includes particles within the ink to create a rough texture can be applied to the glass in a variety of patterns, which will significantly increase the slip resistance of the glass. Alternatively, the surface of the glass can be sandblasted which will result in more diffused light and improved obscurity.

Slip resistance is measured using mean Pendulum Test Values (PTV); the higher the figure the better the slip resistance.

A PTV of 0-24 has a high slip risk, 25-35 has a moderate slip risk and 36+ has a low slip risk. The test is carried out in wet and dry conditions and the lowest figure is obtained when wet.

Generally sandblasted glass achieves a PTV of 50 and fritted glass achieves a PTV of 60, providing better slip resistance than the sandblasted. However, both are well above the threshold of 36 to be categorised as having a low slip potential.

Further information regarding slip resistance can be found at the UK Slip Resistance Group (UKSRG), or to find out more about specifying walk on rooflights by contacting us at

How do I get a glazing quote?

Looking for a glazing quote? Want some idea of the cost of windows, doors, rooflights? Swamped in  quotes from loads of suppliers? Fancy a quote from a single glazing supplier who can cover everything? How lovely does that sound? MassimoSky loves to help people.

Unlike so many other glazing companies we take great pleasure in talking about your project. We appreciate that it is a really big event for you. That a hard sell is not what people want or appreciate.

This is why we offer a Free Design Consultation service. Bring in your Architects or Planning drawings. Any images or design inspiration you have. We will chat over a coffee to see how we can make your ideas a reality.

If it helps you can send the drawings to us via email at and we can prepare a few options and complete the design consultation via email, phone or video call.

What do I need to send for a glazing quote?

All the information that we need is normally found on these drawings and it is the simplest way to understand the scope of the works.

If you do not have architectural or planning drawings to send to us you can send sketches with dimensions or written accounts of what glazing is required.

Our main objective is to give you the closest solution to your design ideas. We then work together to tweak this to achieve a solution which works for building regulations and more importantly, your budget.

With our extensive portfolio of products, we have the ability and knowledge to offer solutions for your whole project. A one-stop shop for everything on your build. Tick off more than one box on your to-do list, therefore, allowing us to take that stress away.

Contact us today for your FREE glazing quote

What is minimal glazing?

The current world of architecture and design, efforts are split into two main areas of focus: innovating, and pushing the boundaries of what can be achieved, and enhancing or highlighting structures that already exist. Minimal glazing could be the tool which bridges the gap between these fields.

The question of what type of glazing will best suit a project has existed since glass was first used as a material in construction, and it’s something that architects and designers have had to navigate consistently in their work.

However, through amazing new techniques in glass manufacture and design, many of the limitations that glass used to impose have been blown apart – and minimal glazing plays a big part in this.

What exactly is minimal glazing?

Minimal glazing involves any glass installations, such as windows and doors, which are visually subtle. As technology and techniques have evolved in the world of glazing and construction, it’s now become viable to design glazing which is structurally sound, and aesthetically unobtrusive.

Until relatively recent developments in construction techniques, windows and other glazing solutions usually involved a bulky frame, which was often made from wood. In 1959, ‘float glass’ was developed, which essentially involved cooling molten glass by floating it on a slow-moving bath of liquid tin – a technique that’s still widely used today as the primary method of creating flat glass panels. Until this, the relatively unstable nature of glass production meant that the material wasn’t uniform, and had to be supported within a sturdy (and therefore often visually clunky) frame.

Even with perfectly flat glass now an option, the arrival and subsequent rise in popularity of things like double glazing mean that frames had to accommodate a thick glazed panel. Even with updates to materials (including fibreglass and aluminium), frames remained thick. This wasn’t inherently a problem; but with the arrival of architectural glazing and toughened glass, things changed.

As new methods were developed, such as heat-strengthening and laminating, it became possible to treat glass not purely as a tool with which to let in natural light, or provide a view, but as a construction material in and of itself.

Frames no longer need to be bulky, and in many cases, can be almost completely visually eliminated. This means that a glass installation no longer needs to act as a standalone feature, and can actually highlight or draw attention to other elements in a design or building. By using things like silicone bonding, which effectively eliminates the need for a solid frame between two glass panels, an almost completely uninterrupted effect can be achieved.

Minimal glazing is the term used for any glass installation in a construction which serves a practical purpose – whether that’s to provide a breathtaking view, or shelter you from the rain as you move from one interior space to the next – all without detracting from the other aesthetic elements of a design. Floor to ceiling windows and large sliding glass doors are the optimum of this design ethos.

Do we need planning permission

Some house extensions and renovations can be made to houses without planning permission. This is known as Permitted Development.

For an extension to an existing home to be classed as ‘Permitted Development’ there are a few stipulations:

The maximum footprint of the extension or garden room must be less than half of the land around the house as it stood in 1948. This is with a maximum height of the extension of 4m – this reduces to 3m if the extension reaches within 2m of your boundary.

The maximum length of a rear single-height extension is 3m from the back of the house for attached properties if the residence is detached this is then 4m. If the extension is two storeys the maximum length is 3m.

Side extensions cannot exceed more than half the width of the existing house. Roof extensions cannot add more than 40 cubic metres of space to a terraced house or 50 cubic metres to a detached or semi-detached house.

Basements are usually permitted if the work is converting an existing cellar or basement, as long as it is not going to be used for self-contained accommodations and doesn’t change the exterior appearance of the building.

Garden Rooms are also usually ok and permitted depending on size and location This is as long as you are not creating a self-contained accommodation.

Permitted Development only applies to houses, not flats or maisonettes and some properties in areas with conservation orders will have different rules.

If planning permission is needed it is useful to get pre-application advice from your local council to highlight any potential issues with your application.

What to think about when Buying Architectural Glazing

In the world of architectural glazing and minimal frame glazing, it can be a minefield for homeowners. So much choice, so much technical information, piles and piles of drawings and sections…..the list is endless.

This is why at MassimoSky we aim to take away this stress and hassle. We understand the key points for a potential client are budget, appearance, and function. The rest we take care of, we breakdown the techie stuff and give our clients the details that matter most to them. We offer the very best in aluminium windows and sliding glass doors.

What style sliding door should I have?

Our Sliding Doors can be configured and designed to fit almost any architectural project.

Available in solutions from 1 panel to an almost endless number for the very biggest openings imaginable.

Panel sizes can be as large as 4m in height or width.

The sliding glass panels allow large sections to be slid back for ventilation and to open out the living space but still achieve slim framing sections when closed, therefore not obstructing the view. With an intersection of 25mm you not only get unobstructed views but great strength.

An opening corner detail can be used where minimal doors are needed to slide away from a corner opening. This can be configured as an inward corner or protruding corner. Sliding doors are designed using a male and female locking section that slide into each other, the lock is then positioned at the corner where the doors are then locked together.

The sliding panels can also be designed to slide into a cavity pocket, this small integral detail can be used to slide the doors into the wall to provide a full 100% opening.

When the sliding glass doors elements slide into cavity pockets the end slider has a cap on the end of the sliding unit which then covers the cavity opening when the sliders are in the open position to stop anything from being able to penetrate the opening.

On spaces where a cavity pocket is not a viable option the sliding glass doors sliding doors can be installed to slide onto the internal or external face of solid walls OR long runs of structural glazing by engineering the same coupling detail for a cavity pocket. Sliding panels onto the external face of buildings means that you can open up the whole opening without the additional building works of creating a cavity wall section to house the sliding panels.