PlumbingIQ
Sign InGet Started
PlumbingIQ

Learning

DashboardFlashcardsMy Progress

Testing & Mocks

Mock Exams

Account

Upgrade to Pro

⭐ Upgrade to Pro - £19

Unlock all lessons and mock exams to pass Level 2 + Level 3 theory exams.

Upgrade now
Lesson 14 of 22

Flue Terminals & Builder's Openings

Read through the material below, then test your understanding.

Module Lessons

Domestic Fuel Systems, Combustion & Flues

Lesson Overview

This guide outlines the critical installation criteria for builder's openings, catchment spaces, and flue terminals serving domestic gas appliances.

Learning Objectives

Identify the dimensional requirements and clearances for builder's openings and closure plates.

Calculate required catchment space void volumes and spigot heights according to chimney type.

State the installation and aerodynamic requirements for open flue terminals and birdguards.

Unlock the full lesson & knowledge check

Get lifetime access to every Level 2 & 3 lesson, 3500+ total questions, and timed City & Guilds mock exams.

Get Pro Access (£19)

Already have Pro? Sign in

PlumbingIQ

Interactive City & Guilds Level 2 and Level 3 plumbing lessons, flashcards and mock exams, built for UK students and professionals.

© 2026 PlumbingIQ. All rights reserved.