Hinged Casement Sashes

Following on from the previous post on sash size considerations, let’s take a look at casement sashes that exceed the stay limitations. These can be achieved using hinged door product, applying a panel with small rails and hardware that differentiates it from typical hinged doors. The hardware options are:

Window Fasteners

These are applied at quarter points which can restrict the maximum height achievable as the upper fastener may become difficult to reach.

Window Fasteners

Bi-Fold Operator

This achieves two point locking at the head and sill. The operator is available with key locking also.

Bi-Fold Operator

Flushbolts and D-Handle

Two Flushbolts are required which achieves two point locking at the head and sill and requires a D-Handle also. Panel heights are not restricted as the flushbolts can have extension rods applied allowing them to be applied near the D-Handle.

Flushbolts and D-Handle

Hinged Door Lever Handle

This provides three point locking and the lever can be applied internally with a plate only to the exterior.

Hinged Door Lever Handle

These four options all require a friction slide restrictor stay be applied at the head. This restricts the opening motion with a friction slide which acts as a hold open mechanism also. It can be applied to allow full opening of 100mm to comply with F4 Safety from Falling through to about 30º.

One further hardware option is the Spectrum Levaloc. This uses a finger pull mechanism that secures the sash and also provides a maximum 100mm opening. In this application they are typically applied in pairs and can be coupled with a rod to allow ease of operation. This does not require a friction slide restrictor stay.

Spectrum Levaloc

Typically the panel width does not reach the maximum allowable of 900-1000mm and maximum heights are determined by windzone, location on the building, product type and locking type, but are generally limited to a range between 1800mm and 2700mm.

The details shown are Residential Series.