Free tools · Home
Roof insulation and window film: what will you save?
For villas in Qatar and the Gulf. Enter your AC use and roof. See kWh, QAR and CO2 saved, and payback if you have a quote.
Your savings
Check the numbers and press Calculate.
Method and sources
Yearly AC kWh is monthly AC kWh times 12. Roof cut: none 20% (study), some 10% (assumption: half), good 0%. Film cut applies to what is left. QAR saved is kWh saved times your price. CO2 uses the Qatar grid, 0.58169 kg CO2e/kWh. The roof study measured summer months only, so a yearly figure may be a little high. Villa size is shown for context. The study results are per villa, not per m². Payback is your quote divided by yearly saving.
- UAE University thesis, roof retrofits on an existing villa in Al Ain: cool roof plus insulation cut July to September cooling by 20.3%
- Window film study, hot-arid offices: 2.76% annual energy saving (2021)
- Lawrence Berkeley National Laboratory, window film field study: up to 29% heating and cooling savings
- Kahramaa Tariff Calculator (accessed 15 November 2026)
- Our World in Data, Qatar grid 0.58169 kg CO2e/kWh (Ember 2024)
Questions
How much does roof insulation cut AC use in a Gulf villa?
A monitored villa study in Al Ain, UAE, found a cool roof with insulation cut summer cooling energy by 20.3% (July to September). We use 20% for an uninsulated roof.
Does window film really help?
Some. Studies range from about 3% for offices in hot-arid climates to 29% cooling savings in other settings. Exterior film works better than interior. We use 5% as a cautious default.
Is there a Qatar-specific study?
A Qatar simulation found about 53% cooling cut from five envelope upgrades together, but it does not split out the roof. We did not find a Qatar roof-only study.
What does insulation cost in Qatar?
We could not find a reliable published price. Get a quote and enter it to see payback.
Get tips by email
Cooling and energy saving tips for Qatar homes. Once a month.