Do Shutters Keep Heat Out? Here’s What You Need to Know
When it comes to keeping your home comfortable throughout Australia’s extreme seasons, shutters are one of the most effective window coverings you can choose. Many homeowners ask the same question: do shutters actually help keep heat out?
The short answer is yes — and often far better than blinds or curtains alone.
Here’s why.
How Shutters Block Heat During Summer
Quality plantation shutters act as an insulating barrier between your window glass and the interior of your home. When harsh sunlight hits the window, shutters help reduce the amount of heat that transfers inside.
1. Thick, Solid Material Helps Stop Heat Transfer
Whether you choose timber, Smartwood®, or PVC shutters, the solid panels help slow down heat moving through the window. Unlike fabric blinds, shutters don’t absorb as much heat — keeping rooms noticeably cooler.
2. Adjustable Louvres for Better Airflow
With shutters, you can angle the louvres to deflect sunlight while still allowing air to circulate. This helps keep the space bright without letting direct heat beam in.
3. A Tight, Custom Fit for Better Insulation
Because Apollo shutters are custom-made for each window, they fit snugly inside the frame. This minimises gaps and reduces the amount of hot air entering the room.
Do Shutters Reduce Heat in Winter Too?
Although most people think of shutters as a summer cooling solution, they’re equally effective in winter. Closed panels create a barrier that slows down heat loss through the glass, helping keep rooms warmer for longer.
This makes shutters a year-round energy-efficient choice.
Which Shutters Are Best for Heat Control?
All Apollo shutters offer insulation benefits, but some materials perform differently:
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Timber Shutters – Naturally insulating and excellent for temperature control
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APT Smartwood® Shutters – Durable, moisture-resistant, and great thermal performance
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PVC Shutters – Affordable and effective for humid areas like bathrooms and kitchens
Your choice depends on the room, window size, and overall design preference.
Other Ways to Maximise Heat Protection
For the best results, combine shutters with:
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Double-glazing (where possible)
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External shading such as awnings or roller shutters
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Light-coloured frames to reflect more heat
This layered approach helps maintain a stable temperature inside your home without relying heavily on air conditioning.
Final Thoughts
Yes — shutters absolutely help keep heat out. Their solid construction, custom fit, and flexible louvre control make them one of the most effective indoor window treatments for managing Australia’s intense heat.
If you’re looking to reduce energy bills, protect your interiors, and stay comfortable all year round, shutters are a smart investment.
