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Text Lesson 1 of 3

Wall Types

Classify external wall assemblies.

15 minExternal Walls Compliance
Diagram for Wall Types
External Walls Compliance Wall Types
How to use the diagram Read the visual first, then connect each label to the lesson text and your calculator inputs. The aim is to make every assumption visible before you calculate.

Learning Objective

Group walls by construction type before checking performance.

External wall scope

External walls form a major part of the envelope and should be grouped by assembly, not only by elevation.

Different assemblies

A project may include masonry, lightweight framed walls, curtain walling and other systems that need separate evidence.

Practice Task

  • List each wall assembly.
  • Mark where each assembly occurs.

Calculator Tip

Keep wall groups aligned with drawings and specifications.

Worked Example: Wall Build-Up Review

Scenario

A project uses cavity masonry on most elevations and lightweight framed walling at a feature bay.

Calculator Entry

Enter separate wall assemblies where construction differs materially.

Step-by-step method
  1. 1Group walls by assembly rather than by elevation only.
  2. 2List layers, insulation and thermal bridge risks for each group.
  3. 3Check that drawings and specifications describe the same assemblies.
  4. 4Keep evidence for each wall type in the report pack.
Expected conclusion

Different wall systems need separate evidence so the report stays reviewable.

Common Mistakes

  • Reporting a wall value without listing the complete wall build-up.
  • Missing thermal bridges, lightweight framing or insulation discontinuity.
  • Letting drawings, specifications and compliance notes describe different assemblies.

Quick Knowledge Check

1. What should you confirm before applying this lesson to a project?

Wall types are grouped.

2. Which piece of evidence should support the main input in this lesson?

List each wall assembly.

3. What is the safest action if the information is incomplete?

Flag the missing evidence, use a conservative assumption where appropriate, and avoid claiming compliance until the information is confirmed.

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