Understanding the CSC Format for Construction Specifications

In Canada, the Construction Specifications Canada (CSC) association plays a leading role in standardizing how specifications are written and organized. CSC works closely with the Construction Specifications Institute (CSI) in the United States, and together they maintain MasterFormat, the industry standard for organizing construction project information.

What is the CSC Format?

The CSC specification format mirrors CSI’s MasterFormat system. It organizes specifications into:

  • Divisions – Broad categories of work (e.g., Division 03 – Concrete, Division 09 – Finishes).

    Sections – Specific work results within a division (e.g., Section 09 29 00 – Gypsum Board).

    Parts – Each section follows a three-part format:

    1. Part 1 – General: Administrative requirements, references, and quality standards.
    2. Part 2 – Products: Materials, manufacturers, and product performance.
    3. Part 3 – Execution: Installation, application, and workmanship requirements.

This format ensures consistency across Canadian construction projects, improves communication, and allows for more accurate bidding and project management.

Example: Division 07 – Thermal and Moisture Protection, Section 07 21 00 – Thermal Insulation

Here’s a simplified example in CSC format:

07 21 00 – Thermal Insulation

Part 1 – General

1.1 References

.1 CAN/ULC-S702 – Standard for Mineral Fibre Thermal Insulation for Buildings

.2 ASTM C665 – Mineral-Fiber Blanket Thermal Insulation

1.2 Submittals

.1 Product data and technical sheets

.2 Samples: 12x12-inch piece of insulation

1.3 Delivery, Storage, and Handling

.1 Deliver in original packaging with labels intact

.2 Store off ground, in dry, ventilated conditions

Part 2 – Products

2.1 Materials

.1 Mineral Fibre Batt Insulation, CAN/ULC-S702 compliant

.2 Thickness: As shown on drawings

.3 Thermal Resistance: RSI 3.5 minimum

2.2 Accessories

.1 Vapour barrier: 6 mil polyethylene sheet

.2 Tape: Pressure-sensitive, approved for vapour barrier application

Part 3 – Execution

3.1 Preparation

.1 Ensure substrate is clean and dry before installation

3.2 Installation

.1 Install insulation snugly between framing members

.2 Seal all joints in vapour barrier with approved tape

3.3 Protection

.1 Protect installed insulation from moisture until enclosure is complete

Why the CSC Format Matters

The CSC format provides a nationally recognized framework for writing specifications in Canada. By following this format:

  • Owners, architects, and contractors communicate using a shared structure
  • Bids become more competitive and transparent
  • Projects stay consistent with Canadian codes and standards

Whether you’re an architect preparing a spec book or a contractor pricing a job, understanding the CSC format helps ensure projects are well-documented and built to standard.

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