MECHANICAL INSULATION BEST PRACTICES GUIDE

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1. Introduction

2. Insulation Materials and Properties

3. Systems Design

4. Products

5. Commercial Piping

6. Commercial Ductwork and Plenum

6.1 Application

A. Rigid Insulation External Application

B. Flexible Insulation External Application

C. Liner Internal Application

D. Underground Insulation

6.2 Finishes

A. Rectangular Ducts

B. Round Ducts

C. Oval Ducts

7. Commercial Equipment

8. Specification Concepts and Examples – Commercial Insulation

9. Firestopping, Smoke Seals and Air Barriers

10. Industrial Piping

11. Industrial Equipment

12. Denis Formula

13. Installation Details

14. Glossary and Definitions

15. Master Specifications

Specification
Code No.

CEF/1

Hot Duct and Plenum – (20°C to 65°C)

– Preparation: On round ducts and on rectangular ducts 740mm or less in width, no preparation is necessary. On rectangular ducts 762mm or more in width, apply to bottom surface, either mechanical fasteners at approximately 450 mm centres, or insulation adhesive applied in strips 100mm wide on approximately 300 mm centres.

– Application: Cut insulation without integral vapour retarder to required size allowing for 50 mm overlap at each joint and apply to exterior of duct. Secure insulation with either twine or wire fastening on approximately 300 mm centres, or by stapling laps; or by 100% insulation adhesive coverage.

CEF/2

Cold or Dual Temp Duct and Plenum – (Ambient to 65°C)

– Preparation: On round ducts and on rectangular ducts 740 mm or less in width, no preparation is necessary. On rectangular ducts 762 mm or more in width, apply to bottom surface, either mechanical fasteners at approximately 450 mm centres or insulation adhesive in strips 100 mm wide on approximately 300 mm centres.

– Application: Cut insulation with integral vapour retarder to required size and apply to exterior or duct with vapour retarder to the outside. Where mechanical fasteners or staples penetrate the vapour retarder and at all joints apply vapour retarder tape or vapour retarder strips adhered with vapour retarder adhesive. All joints shall be overlapped a minimum of 50 mm and stapled on approximately 100 mm centres. Secure insulation with either twine or wire fastening on approximately 300 mm centres. (See Notes 1 and 3)

Note 1: Except where specifically called for in the Insulation section of the project specifications, where an interior duct liner is used, external insulation shall not be applied.

Note 2: All Outside Air Ducts shall be insulated as specified under CER/3, Page CD-1.

Note 3: Insulation should be a minimum 16kg density, 38 mm thick as required by ASHRAE 90.1.