What is the Difference between Internal & External Shutters?

What is the Difference between Internal & External Shutters?

Five differences between internal and external shutters

Window dressings play a key role in the security, energy efficiency, comfort, and privacy of your home, here at Balcony shutters we take these things seriously. We can work out the option that’s going to be best for your property which is a priority. Both internal and external shutters are widely recognised as great choices for homeowners who are eager to ensure their home is as sustainable and comfortable as possible. Here we look beyond the obvious, to identify five differences between internal and external shutters. This piece will give you the information you need to decide which type of shutter is going to be best for you and your property.


Obviously external shutters are mounted on the exterior of your property. There are several different types, including panelled or louvred shutters which are mounted either side of the window, and metal roller shutters, that roll down across the window from above. In contrast, internal shutters consist of movable louvres, set in frames which are mounted at each side of the window. External shutters are well-known as an aid to security. Strong and featuring a tamper-proof design, steel roller shutters in particular provide powerful protection against unauthorised entry.

Adverse weather events

A key difference between internal and external window shutters is the role they play in protecting the window from the effects of adverse weather. From the risk of shattering due to falling branches or detritus carried by the wind, through to weakening due to repeated adverse weather events, without proper protection windows can easily become damaged due to weather. External shutters provide solid, dependable window protection – a must in locations where storms are a regular event.


Whilst both internal and external shutters provide privacy, internal shutters have the edge when it comes to providing flexibility in terms of the amount of privacy provided. In general, external shutters don’t contain moving panels, so shutters may either be open or closed. Internal shutters have slats whose angle can be altered as more or less light and/or privacy is needed.

Visual appeal

As an accent in an interior space, it’s important that indoor shutters look visually appealing. Available in a wide range of colours, styles and materials, internal shutters invariably look stunning as well as providing a valuable insulating function. In comparison, in many cases external shutters are intended to provide functional benefits first and foremost, with appearance a secondary consideration.

Moveable slats

Whereas exterior shutters are usually rigid installations, interior shutters can often be tilted to alter the level of daylight, ventilation, and insulation which they offer. This enables homeowners to have far greater control over their interior space when they use internal shutters.

Installed correctly, both internal and external shutters can provide an efficient home insulation measure. Used alongside other energy-efficiency measures, they can significantly reduce heat transfer in and out of your property, as well as providing a range of additional benefits.

Get in touch on (07) 5438 1010 to find out more about the benefits which internal and external shutters can bring.

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