The Mistral system from Optima, designed and supplied for many years under the Unilock brand, is ideal for those projects requiring a combination of high performance, elegant detailing yet low cost.
Additional information
Mistral offers unrivalled technical performance and a high degree of flexibility in configuration, aesthetic finishes and accessories.
Mistral can be constructed in double glazed or solid form. Solid panel options are framed; where panels are joined with a powder coated steel top hat section, or flushwall; where panels are either v-jointed or the joints are taped and filled. The demountable 80mm pre-decorated gypsum or steel faced boards are fixed to a framework of rigid studs located between ceiling and floor tracks.
Mistral is designed to be easily and quickly demounted and re-installed, ensuring minimal disruption during construction and any relocation, whilst offering tax benefits to the client.
Explore Mistral
FAQ
Framing Elements
Studs and tracks are formed from cold-rolled galvanized steel. All exposed sections are pre-finished with a polyester powder coating.
Solid Panels
Non fire rated and half hour fire rated partitions in both framed and flushwall construction use 12.5mm gypsum board. The maximum panel width is 1213mm.
Glazing
Double glazing modules are suitable for 6mm toughened or 6.4mm laminated glass. The glass is installed flush to the face of the partition. Blinds can be incorporated within the cavity; alternatively, an applied manifestation can be specified.
Maximum Height
Maximum height or glazed panels, solid panels and door sets.
Fire Resistance
Mistral glazing, solid panels and door sets have been tested to achieve 30 minutes fire resistance in accordance with BS 476: Part 22.
Surface Spread of Flame
The gypsum board panels have a class 1 surface for spread of flames when tested in accordance with BS 476: Part7: 1971 and offer a Class 0 specification when tested to BS 476: Part 6: 1968.
Wire Management
Power and data cables can be accommodated within the cavity of the partition or behind the skirting. Switches and sockets may be fitted flush or surface mounted and switch posts can be used adjacent to door frames if required.
Interpanel Joints framed Solid and glazed
Polyester powder coated top hat section at the panel joints. Fixings and concealed with a self coloured PVC insert. The steel top hat section is fastened to the structural stud with self piercing screw fixings.
Flushwall Solid
V-Joint detail between the panels, or taped and filled joints. A steel spring clip secures the gypsum board substrate back to the rolled steel stud.
Skirting Options
The standard is a 55mm PVC clip-on skirting; alternatively, an 80mm powder coated aluminium section can be used. A recessed base detail is also available if preferred.
Doors
Pre-fabricated, polyester powder coated door frames are constructed from extruded aluminium. Frames are fitted with PVC slamming gaskets and are designed to retain intumescent strips where a 30 minute fire rating is required.
Working Wall
The top hat section can be provided with a ladder track to support shelving. Reinforcement to studs is necessary when heavy loads are to be supported. Lightweight fixings can be made direct to the panels using appropriate fasteners.
Acoustics
All acoustic tests are conducted in accordance with ISO140/ISO717.
Product Case Studies
Temple Quay House, Bristol
Products installed in this project: Single glazing, sliding glass doors, bi-panel and drywall. Read more.
Did you know?
Registered Architects can download the following on Optima's Website:
- Comprehensive Designer's Guide
- Technical details in PDF and DWG files
- Marketing and other visual material
Register as an Architect or Designer to obtain access.
Order our Designer's Guide on a USB!
Including:
- - Detailed Project Photos
- - CAD .dwg Files
- - Technical / Designer Specs
- - 3D Animations explaining our key products
