There is no universal standard height that applies to all balustrades. The required height depends on the regulations where the balustrade is to be installed and on the specific conditions of the location.
The height of the balustrade must be determined based on, among other things, how the area is used, how high a fall could be, and the requirements that apply to the specific location.
In this guide, we’ll go over practical guidelines for balustrade height, how to measure height, and what factors you need to consider on patios, terraces, balconies, and other areas where there is a risk of falling.
What are the rules for balustrade height?
The requirements for balustrade height may vary depending on where the balustrade is to be installed, how the location is used, and how great the risk of falling is. Therefore, you need to check which requirements apply to the specific location before determining the height.
The minimum permitted height may vary
Regulations and guidelines may specify different minimum heights depending on factors such as the type of building, its location, and how the balustrade is used. A height that is appropriate in one location may therefore not be sufficient in another.
The risk of falling affects what height is appropriate
Drop height, the surrounding environment, the people who use the area, and the design of the balustrade must all be taken into account together. A greater risk may warrant a taller balustrade than the minimum height that would otherwise be acceptable.
Always check the current guidelines from your local authority or the relevant body.
What should you consider when choosing balustrade height?
Start by checking the height requirements that apply where the balustrade is to be installed. Then assess the drop height, the intended use, and the environment below. On patios, terraces, balconies, and stairs, conditions may vary even when the structures look similar.
The table shows which factors are particularly important in different situations. The final balustrade height must always meet the requirements of the specific location and, at the same time, be adapted to the actual risk of falling.
| Situation | Start with | Things to Keep in Mind |
|---|---|---|
| Deck near ground level | Local requirements and risk of fall | Check both whether fall protection is required and what height requirements apply. Even at a low drop height, a balustrade can provide a clear boundary and extra safety. |
| Raised deck or terrace | Drop height and local requirements | The larger the drop height, the more important the balustrade's height and design become. Check the applicable minimum requirements and determine whether the risks at the site warrant a larger safety margin. |
| Balcony | Local minimum requirements | Balconies may be subject to specific requirements for fall protection and balustrade height. Therefore, always check what applies to the specific building and location. |
| Indoor Staircase | Staircase design and local requirements | In this context, balustrade height, the risk of falling, and the staircase’s design must be assessed together. The grip and placement of the handrail may also be subject to specific requirements. |
| Where young children are present | Child-safe design | Pay special attention to climbing hazards, openings, furniture next to the balustrade, and other details that may affect safety. |
| Steep slope, rocks, or water below | The consequences of a fall | A minimum requirement may be insufficient when the consequences of a failure are particularly severe. A larger safety margin may therefore be justified. |
Where do you measure balustrade height from?
Balustrade height is measured from the finished floor where the person is standing to the top of the balustrade. Drop height is measured instead from the same floor level down to the ground or the lower level below.
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Measured upward
Balustrade height
- From the finished top surface of the decking, balcony floor or stair landing to the top edge of the balustrade.
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Measured downward
Drop height
- From the floor where the person is standing to the ground or the lower level below. The drop height is one of the factors that must be taken into account when assessing the risk.
The deck is 130 centimetres above the ground
The 130 centimetres down to the ground is the drop height. Once you have determined the required balustrade height, measure the selected height from the deck floor to the top of the balustrade.
How do you choose balustrade height on sloping ground?
On sloping ground, the drop height should be measured at several points along the balustrade. Use the most exposed section as a basis when determining which balustrade height is appropriate for the entire length.
The largest drop height will serve as an important starting point
In this example, 130 centimetres is the largest drop height and it must therefore be given significant weight when evaluating the entire length of the balustrade. At the same time, the site’s use, the environment below, and other conditions must also be taken into account. A straight and continuous top edge also creates a calmer appearance than if balustrade height it were stepped down to follow the slope of the ground.
Can a low balustrade be perceived as a seating area?
Yes. A relatively low balustrade with a wide, flat top rail can be perceived as a place to lean against or sit on. It is therefore important to assess both the height of the balustrade and how the top edge and the area adjacent to the balustrade are designed.
At this height, a wide, flat top rail can be perceived as a natural resting or seating area. The range is an example, not a prescribed limit.
Also assess how the area next to the balustrade should be used
The height of the balustrade is only one part of the whole picture. The shape of the top rail and what is placed next to the balustrade also affect how easy it is to lean on, sit on, or climb the structure.
- Top rail
- A wide, flat profile is more inviting for leaning against or sitting on than a narrower edge.
- The Surroundings
- Chairs, tables, and other furniture placed next to the balustrade can make the top of the balustrade easier to reach.
- The big picture
- When the balustrade serves as fall protection, its design should not encourage anyone to sit on it or climb on it.
Is it possible to choose a taller balustrade?
Yes. A balustrade may be taller than the minimum height required for the location when the risk of falling, the intended use, or other conditions warrant it. A taller balustrade can provide a greater safety margin and better windbreak, but at the same time affects the view and how open the space feels.
More protection without the balustrade feeling too high
A slight increase can provide a wider margin where the risk of falling is higher or where you want to get more windbreak. If an unobstructed view is also important, a glass balustrade for a deck can maintain a more open look than a solid balustrade infill.
The balustrade is starting to have a more noticeable effect on the room's atmosphere
At greater heights, the balustrade may feel more like a barrier than a low frame. This can affect the view from a seated position and make a deck or balcony feel more enclosed, even if the taller design is justified by the site conditions.
Can a glass enclosure replace the balustrade on a patio or balcony?
In some cases, fixed glass panels may be part of the fall protection system, but glazing does not automatically mean that the balustrade can be removed or made lower. The entire structure must be assessed as a whole.
Fixed glass panels may be included in fall protection
If the glazing is permanently installed and designed to serve as fall protection, it may, in certain projects, be included in all or parts of fall protection.
Balustrades and glazing must be evaluated as a whole
The placement of the glass, the fixed and openable sections, the drop height, the area outside the glazing, and how the space will be used all affect the assessment. The balustrade may therefore still be necessary or need to retain its full height.
How do you choose the right balustrade height?
Start with the drop height and the most exposed section of the balustrade. Then assess the environment below, how the area is used, and how the balustrade should be designed before determining the final height.
Check these seven points
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Measure drop height at several points
Check the entire length of the balustrade, especially if the ground slopes or changes level. The drop height can vary significantly even along a short deck.
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Start with the largest drop height
The most vulnerable spot should carry significant weight in the assessment of the entire stretch, even if the ground is closer to the deck in other sections.
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Assess what is below
Grass, paving, water, and a steep slope can have different consequences at the same drop height. This affects which safety margin is appropriate.
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Think about who uses the space
If small children will be in that area, you also need to assess the risk of climbing, furniture near the balustrade, and whether a larger safety margin is needed.
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Consider whether a few extra centimetres are needed
A slightly taller design can provide a greater safety margin without significantly altering the overall impression. At the same time, take into account the view, windbreak, and the proportions of the site.
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Measure balustrade height from the finished floor
The selected balustrade height is measured from the floor where the person is standing to the top of the balustrade – never from the ground or the level below.
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Check for any glazing before finalising the measurements
If the balustrade is to be combined with glazing, the entire solution should be evaluated before the dimensions, fixings, and products are finalised.
Which balustrade height is right for your deck?
The correct height depends on drop height, the surroundings below, and how the space will be used. Compare our balustrades or contact customer service if you’d like help choosing a solution that fits your deck.
What do you need to know about balustrade height?
Here are brief answers to common questions about height requirements, measurements, fall risk, furniture placed next to the balustrade, existing balustrades, and glazing.
Is there a universal standard height for balustrades?
No. The balustrade height required depends on the regulations in effect where the balustrade is to be installed, as well as factors such as drop height, intended use, and site conditions.
Can decks and balconies have different requirements regarding balustrade height?
Yes. The requirements may vary depending on the design, location, drop height, and the regulations in effect at the specific site. Therefore, always check the applicable requirements before determining the height.
Can furniture placed next to the balustrade affect safety?
Yes. Chairs, tables, and other furniture near the balustrade can make the top of the balustrade easier to reach and increase the risk of climbing, especially where small children are present. Therefore, the area adjacent to the balustrade needs to be included in the overall assessment.
Are balustrade height and the drop height the same measurement?
No. Balustrade height is measured from the finished floor where the person is standing up to the top of the balustrade. Drop height is measured from the same floor level down to the ground or the lower level below.
Does an existing balustrade need to meet current requirements?
It depends on the regulations in effect at the specific location and on whether the balustrade or the building is to be modified. Therefore, check the current requirements before an existing balustrade is altered, replaced, or modified.
Can a glass enclosure count as fall protection?
In some cases, fixed glass panels may be included in fall protection, but glazing does not automatically replace the balustrade. The entire structure must be evaluated as a whole before dimensions and products are determined.
