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KEY-LOCK Concealed Ceiling System

The KEY-LOCK Concealed Ceiling System is designed to produce a high-quality structure for a flush or featured finish for plasterboard ceilings. KEY-LOCK is available in Fully Suspended or Direct Fix options.

Fully Suspended:

Suitable for suspension depths of more than 200mm, and available for fire-rated, bulkhead, seismic and acoustic designs, it is strong enough to hold multiple layers of plasterboard.

The ceiling grid system enables the mixing of primary (Top Cross Rail) and secondary components (Furring Channel) to increase spans, suspension fixing points and maximise structural design. The components within the Rondo ceiling system have been expertly designed to simply snap into sections, without the aid of mechanical tools. This offers contractors an easy to install ceiling system, speeding up valuable time on site.

The Top Cross Rail and Furring Channel sections have rolled edges making them safer to handle and can be produced in custom lengths or radiuses for vaulted and curved ceilings. The KEY-LOCK Ceiling System can be installed with acoustic mounts to improve airborne sound and impact sound transmitted between floors particularly important in multi-residential projects.

The Rondo Technical Team can provide seismic design solutions which have been tested to meet the New Zealand building code. 

  • Direct Fix:

Rondo supplies a wide range of direct fixing clips that allows direct fixing of Furring Channels or Ceiling Battens to either concrete, steel or timber ceiling structures for suspension depths of up to 200mm.

  • Wall Strapping:

Rondo KEY-LOCK can also be used to batten-out masonry walls.

Key Features
  • Furring Channels and Top Cross Rails are available in radiuses for curved ceilings
  • Furring Channels, Ceiling Battens and Top Cross Rails can be ordered in special lengths
  • Able to be engineered designed for external ceiling use, e.g. Soffits
  • Base Material is engineered from G2 BlueScope Steel for strength and reliability
  • Rondo range of ceilings can interlock with each other in the same ceiling area, providing specialised ceilings after partitioning
  • Allows easy, economical and true bulkhead corner ceiling finishes to be achieved by using furring channel along with concealed support clips and fixings
Scope of Use
  • Suitable for creating flush plasterboard ceilings
  • Direct Fix or Fully Suspended ceiling applications
  • Direct Fix — concrete, steel or timber ceiling structures for suspension depths of up to 200mm
  • For greater than 200mm install suspended system
  • Suspended Ceilings for internal applications
  • Fire Rated Ceiling System Applications
  • Curved Ceiling Systems using pre-curved furring channel and top cross rail
  • Raked and Cantilevered Ceilings
  • Bulkheads as an architectural feature or concealing services
  • Wall Framing for masonry walls — battening-out irregular walls or providing a cavity for cables and plumbing
  • Suspended Ceilings for External Applications
  • Acoustic Ceiling Design available
  • Seismic Ceiling Design available
Limitations on Use
  • Rondo recommends its products and systems are installed by a qualified tradesperson and according to the relevant codes and standards
  • In addition to the information in the KEY-LOCK Design Manual professional advice should be sought
  • For seismic specific project design specifications and full advice please contact Rondo Building Services direct
  • Direct fixing clips need to be fixed along the sections in accordance with the relevant maximum span tables 
  • Furring Channels should be spaced as per the building board manufacturers' recommendations
In-Service History
  • Taranaki Base Hospital — Warren and Mahoney
  • Lambton Square, Wellington — Jasmax Architect 
Other Performance Attributes
  • Base Material is engineered from G2 BlueScope Steel for strength and reliability
CAD Drawings — KEY-LOCK
Complete Rondo Design Manual
Design Manual: KEY-LOCK Concealed Ceiling System
Direct Fix Span Tables
Rondo Design Wizards
Sample Warranty
KEY-LOCK Installation Guide

2018 NZ

Project: Lambton Square
Project: Taranaki Base Hospital
Rondo Distributors

Rondo is a market-leading manufacturer and supplier of wall and ceiling systems and complementary accessories

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