Overview

• Opening windows with interior and wardrobe doors creates strong cross-ventilation when timed for cool morning or evening air.
• Aluminium foil or mirror-coated sun-protection films mounted outside can block 80–87 percent of solar energy for immediate shading.
• Installing reflective materials on the inside can trap heat between glass and film, risk window damage and amplify glare toward neighbors.
• Reusable alternatives such as windscreen sunshades and emergency blankets provide quick, low-cost reflective barriers without permanent installation.
• Experts stress that exterior shutters, awnings and fortified roof insulation yield larger, long-term reductions in indoor overheating than DIY fixes.