Acoustic Roller Shutter - Sonaroll

The Sonaroll is Bolton Gate Company’s purpose built acoustically rated rolling shutter. 

This sound reducing door system combines several features and benefits into one design. In addition to acting as a secure and weather resistant closure, the shutter offers significant acoustic and also thermal insulation properties.

Extensively tested at the Department of Acoustics at Salford University, the door achieved a maximum sound reduction of 27.2 dB (at 5000 Hz) with a 22 dB RW. A special double curtain arrangement is also available. This provides significantly increased acoustic performance with a maximum of 39.8 dB (at 2000 Hz) and 33 dB RW rating.

Operation

• Electric operation is provided by a 400-volt nominal, 3 phase, direct drive motor complete with integrated safety brake. 
• A manual disconnect mechanism complete with haul chain is provided for use in the event of power failure.
• Open/ Close/ Stop push button controls are integrated within the face of the low level control panel.
• A 230-volt, 1 phase tubular motor option is also available (depending on opening size) in addition to a whole array of optional control equipment that can be provided for both drive options. Please discuss your requirements with Bolton Gate Company's technical sales team.

Curtain

The shutter curtain is constructed from acoustically rated 100 mm high foam bonded continuously interlocked galvanized steel laths with a flat profile. The laths are securely held in place using black nylon end locks. 

Bottom rail

The bottom rail comprises a standard lath fitted with a black trim section carrier and rubber weather seal.

Side guides

Vertical guides are formed from rolled galvanized steel in a double rebate profile with twin brush strips. Full height angles are provided for mounting to the structure.

Roller

The roller is constructed from seamless steel tube of adequate diameter to resist deflection and held in bearings or cups attached to the endplates.

Endplates

Zinc plated mild steel of appropriate thickness relative to door size and supplied with angles for fixing to the structure.

Casings

A galvanized steel coil casing and motor casing are provided as standard to close off the operating mechanism and complete the aesthetic appearance of the door. A full span acoustic infill is also mounted directly below the coil casing (provides an additional 1 dB under test conditions).

Finish

Galvanized steel is the default finish but please refer to Options below for alternatives.

Maximum sizes

10000 mm wide x 10000 mm high.

Weight

Varies with opening size dependent on lath/barrel/casing requirements but approximately 50 kg/m².

Options

• Tube motor operation.
• Increased RW using double curtain arrangement.
• Polyester powder-coat finish.
• Plastisol finish to curtain, remaining components with a polyester powder-coat finish.
• Grade 304 or 316 stainless steel.
• Additional electrical controls e.g.: keyswitches and radio controls.
• Radar/ loop detectors/ photocells.
• Timer closing.