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Subjects · Leaving Cert Construction Studies

Leaving Cert Construction Studies: Windows & glazing

How often Windows & glazing comes up on the Construction Studies papers, every year it was asked, and questions to try.

HL Asked on 6 of the last 9 Higher Level papers, most recently in 2025. most years

OL Asked on 8 of the last 9 Ordinary Level papers, most recently in 2025. most years

June 2028 is the first exam on the new Construction Studies course. These come from the 2016–2025 papers, so read them as a guide.

Windows & glazing, Higher Level(8 marks)

Quick ones on Windows & glazing.

(a)Best position for a window frame in an insulated wall?
  1. Flush with the outer face of the wall
  2. In line with the insulation layer
  3. Flush with the inside plaster face
(b)Purpose of the cavity tray over a window head?
  1. Acts as the airtight seal around the frame
  2. Carries the load of the wall above the opening
  3. Directs cavity water out through weep holes
(c)Why are stop ends fitted to a cavity tray?
  1. So water cannot run off the tray ends into the cavity
  2. To close the cavity against fire at the reveal
  3. To hold the lintel in place over the opening
Show the answers

(a) In line with the insulation layer

(b) Directs cavity water out through weep holes

(c) So water cannot run off the tray ends into the cavity

Your turn: Higher Level questions on Windows & glazing.

Higher Level

Asked on 6 of the last 9 Higher Level papers, most recently in 2025. most years

Every paper, year by year

YearWhere it came up
2025Q1
2024Q7
2023Q9
2022Not asked
2021Not asked
2019Q1
2018Not asked
2017Q8
2016Q1

Links open the State Examinations Commission’s paper for that year.

More Windows & glazing questions

Windows & glazing, 2 marks

What is a thermally broken window frame?

  1. A frame designed to break safely if struck
  2. A frame fitted with no glazing beads at all
  3. Insulating section separating inner and outer frame
Show the answer

Insulating section separating inner and outer frame

Aluminium and steel conduct heat fast. A plastic or foam break stops heat passing straight through the frame, keeping its inside face warm and dry.

Windows & glazing, 2 marks

Why is an insulated sub-cill fitted below a window?

  1. It drains the cavity out below the window
  2. It keeps the insulation continuous under the frame
  3. It carries the lintel over the head of the window opening
Show the answer

It keeps the insulation continuous under the frame

Without it, the cill and the wall below form a cold bridge, so the inside window board can fall below dew point and grow mould.

Windows & glazing, 2 marks

Advantage of a tilt-and-turn window?

  1. Secure tilt ventilation and easy cleaning
  2. It slides sideways into a pocket in the wall
  3. It never needs seals or adjusting
Show the answer

Secure tilt ventilation and easy cleaning

Tilted, the sash opens at the top for secure night air; turned, it opens fully inward for cleaning from inside. Multi-point locks press it tight on its seals.

Ordinary Level

Asked on 8 of the last 9 Ordinary Level papers, most recently in 2025. most years

Every paper, year by year

YearWhere it came up
2025Q1
2024Q5
2023Q8d
2022Not asked
2021Q5, Q8g
2019Q1, Q8d
2018Q8g
2017Q5
2016Q8h

Links open the State Examinations Commission’s paper for that year.

More Windows & glazing questions

Windows & glazing, 2 marks

Main advantage of triple glazing over double glazing?

  1. It lets in much more sunlight
  2. It never needs a frame
  3. Less heat is lost through the window
Show the answer

Less heat is lost through the window

The extra pane adds a second sealed gap, which slows heat flow. Triple glazing has a much lower U-value, so rooms stay warmer.

Windows & glazing, 2 marks

Gas often sealed between the panes of an energy-efficient window?

  1. Carbon dioxide
  2. Argon
  3. Oxygen
Show the answer

Argon

Argon is a heavy inert gas. It moves more slowly than air, so it carries less heat across the gap and lowers heat loss through the glass.

Windows & glazing, 3 marks

What does a low-e coating on window glass do?

  1. Reflects heat back into the room
  2. Makes the glass unbreakable
  3. Stops all sunlight coming in
Show the answer

Reflects heat back into the room

The very thin metal coating lets light through but reflects long-wave heat back inside, so less heat escapes through the glass.

Other Construction Studies topics

All of Leaving Cert Construction Studies