Single-glazed Window
vs
Window Film
vs
Window Coating (Internal)
Window Insulation Comparison
Graph of Temperature Recorded Under
3 Different Window Insulations
set ‘Single-glazed Window’ as baseline/existing window
Graph of Temperatures Difference Between
3 Different Window Insulations
set ‘Single-glazed Window’ as baseline/existing window
Legend
Orange – Single-glazed Window
Grey – Window Film (applied to single-glazed window internally)
Yellow – Window Coating (applied to single-glazed window internally)
During Daytime
Temperature record orders: Single-glazed Window > Window Coating (Internal) > Window Film
For hot regions: window film and window coating (internal) can significantly lower the room temperature than a single-glazed window on a hot day (ranging from -5°C to -15°C lower).
For cold regions: it might not be good news that both products do not gain much heat on a sunny day.
During Nighttime
Temperature record orders: Window Coating (Internal) > Window Film > Single-glazed Window
For hot regions: window coating (internal) and window film can keep the room temperature higher than a single-glazed window at night (up to 5°C higher), which could be both good and bad news depending on the situation.
For cold regions: it is definitely good news that both products can keep the room temperature higher for a longer period than a single-glazed window.
Other Factors
Buildability – both products are much similar in terms of installation.
Cost-wise – both products are much similar in terms of price charged.
Durability – window film claims to last for 10 – 20 years whereas window coating claims to last for 20 – 30 years.
Product availability – window film is available in Australia whereas window coating is not currently available in Australia.
See-through performance: window film is much better than window coating if look closely.