Open-Out windows: a Roto hardware guide

As a window manufacturer, you’re always being bombarded with information about products. Various manufacturers are always trying to get your attention and convince you theirs is the best.

But how many of them really look at it from your point of view?

We’re going to talk about Open-Out windows. Maybe you call them outward-opening, or casements. Chances are they’re a core product for you.

Pretty much everything
That’s good, because as it happens, Roto makes pretty much everything you could need hardware-wise. We decided to make this particular blog article a guide to Open-Out hardware – but from your point of view.

Let’s start with your most basic casement window. This is one where price is an issue: you have to keep the cost as low as possible.

Security is not a prime concern here, because this window will probably be fitted on a first level floor or higher, perhaps on a new-build house or apartment. Or it could be a replacement for an older window.

You don’t want cheap and nasty
So what you’re looking for is a standard espag. A straightforward, one-piece unit with two cams, maybe three on larger sized windows. Dedicated strikers for the profile would obviously be needed as well.

This is a low-priced espag. But you don’t want cheap and nasty: you want to fit this thing and forget it. It should last a minimum of 10 years. You don’t want to be called back to replace it because something’s snapped or the customer is complaining it has rusted.

A German product
At the same time, even though this is a lower-priced product, wouldn’t it be good to be able to tell the customer the hardware unit is a German product, made from the most modern materials and designed for durability and corrosion resistance?

It sounds like you need to look at our range of one-piece espags.

Entry level
SSL 10 is the entry level espagnolette. Featuring a small-sized zinc die cast gearbox requiring the a minimal level of routing, this two-cam unit is suitable for rebate sizes from 240 to 1400mm. That should cover the majority of windows you need to make.

However, if you often need to supply windows that are larger or smaller than those dimensions, you might want to look at TSH 10. This range of espags covers sizes from as small as 150mm (with a single cam version) and goes up to 1800mm.

The TSH 10 gearbox is made from a glass-reinforced polyamide material of the same type used for many automotive components. It offers high levels of strength and durability and of course, is entirely corrosion proof.

A convenient night vent mode
Another advantage of TSH 10 is the option of being able to offer your clients the more convenient TurnPlus night vent mode. Instead of having to line up the cams with the slots in the strikers, the user just turns the handle around to the 135 degree position when unlocking the window. Then, when the sash is pushed open, the TurnPlus night vent striker does the rest.

“I want shootbolts”
But what if you are making windows that are going to be placed on the ground floor, or which are otherwise more accessible to potential intruders? Perhaps you even have clients who say, “I want shootbolts”.

In that case, the first product you look at should be the TSH 20. It’s a modular system which enables you to gear sashes of any size from 320 to 1790mm, and choose whether to add shootbolts or even corner drives with cams. The latter is useful for many situations, including double sash windows.

With TSH 20 you also get a glass-reinforced polyamide gearbox – and this one features a locking cam.

Low handle heights
Increasingly, there are situations and specifications where even TSH 20 isn’t quite enough.

Many building specifications are now demanding windows with low handle heights for accessibility. That’s something many fabricators have found to be very difficult if not impossible to achieve using their standard range of hardware.

Very tall casements
There are other issues you might have come up against. When top hung windows become very tall, locking across the bottom horizontal only is really not enough, especially if the windows are also exposed to strong winds.

The ideal solution would be to have locking points not only on the bottom plane, but also on the sides as well.

No bodging required
That kind of arrangement and many more are now possible without ‘bodging’ or adapting hardware. Because Roto TSH 30 has been designed to be the most adaptable casement locking system ever made.

Suitable for PVC, timber and aluminium, TSH 30 enables you to create a highly secure window of any size. Like most great ideas, the thinking behind it is remarkably simple. It enables components from our Tilt&Turn programme to be used on casements.

A huge range of locking components
A specially-designed gearbox and strikers connect seamlessly to a huge range of locking components. It means windows can be made with the desired number of locking cams, and these can be placed strategically.

It means you can create a window hardware specification to match your clients’ requirements, without you having to hear that dreaded phrase, “We’re really sorry but there’s just no suitable hardware to make this window”. With TSH 30, things become possible.

Ultra-high security specifications for requirements such as bomb-blast resistance can also be achieved with TSH 30.

Friction hinges
Whichever hardware system you choose, Roto is also able to provide a range of friction hinges to cover various sizes and weights. These range from the Defender for lighter sashes, through the Storm range for increased weather-performance and load-bearing, up to the range-topping Sterling. The latter can support a top hung sash of 180 kg.

Roto has other hinge solutions for special requirements too. Talk to your distributor about any of these products, or ask for Roto’s technical advice on new specifications.