Calculating your Balustrade
So you know where you’d like your new balustrades so what’s next? We want all the balustrades to be equal size and need posts in between to secure.
For a Straight Run
First, take a measurement of the overall width.
Example (for a straight run): width = 6m 230mm
Maximum width of balustrade is 1m 830mm. So, take the 6m 230mm and divide by 1m 830mm.
6230 ÷ 1830 = 3.4
Round the number up. So 3.4 we need 4 balustrades.
If starting and ending with a post, the number of posts required is always one more than the balustrades.
- 3 balustrades = 4 posts
- 4 balustrades = 5 posts
- 5 balustrades = 6 posts (and so on)
Each post is 40mm in width. I need 4 balustrades and 5 posts. Reduce 200mm off overall width (5 x posts at 40mm).
6m 230mm – 200mm (for posts) = 6m 030mm
Now divide 6m 030mm by 4 (number of balustrades needed).
1m 507mm. This would be an exact measurement. There is 10mm adjustment either side of the balustrade where it meets the post. You can be shorter but not longer. We would recommend reducing each balustrade width by 10mm so you have some play so each balustrade is 1m 497mm.
Posts Needed
For a straight run with 4 balustrades, 5 posts are required.
- (2x) Start/ End Posts
- (3x) Centre/ Run Posts
Balustrade Height
When selecting height of balustrade this is the actual size of the balustrade without taking into account the gap from ground level to bottom edge of balustrade. We recommend having a gap of 100mm from ground level to bottom edge. So if you wanted an overall height of 1m 100mm (ground level to top of balustrade), select a balustrade height of 1m.
