Decking Steps & Stairs Installation
How to install steps and stairs for Hyperion® composite decking
Important information
- Steps must be a minimum of 2 boards deep and a maximum of 190mm high per step rise (220mm in private installations).
- It is the customers responsibility to ensure the installation meets the stipulation of the minimum and maximum step rise, step going (depth) and pitch required, as per ‘Document K: Building Regulations 1992’.
- If creating the step support frame using Manticore plastic lumber, it is recommended that you use 50 x 150mm profile bearers and only in a box frame structure.
Decking step installation
Step 1
Plan your stairs
Plan your step area, taking into account the decking board and riser width, when designing the tread and rise dimensions.
Step 2
Construct a frame
![](https://a.storyblok.com/f/162000/1200x800/b7ccf1e654/deck-steps-box-frame.jpg)
Create a box frame to support your step area:
- Ensure that the boards are supported at the appropriate joist centres.
- If you are creating multiple steps, ensure the base box is large enough to stack all steps on top.
![](https://a.storyblok.com/f/162000/1200x800/775292049b/stacked-box-frame-decking-steps.jpg)
For multiple steps create additional smaller box frames and place on top.
Step 3
Secure the frame
![](https://a.storyblok.com/f/162000/1200x800/610bfba6ba/drilling-deck-stair-subframe.jpg)
You can secure the separate box frames by inserting a post into the inner corner of the box frame and screwing in place.
OR
![](https://a.storyblok.com/f/162000/1200x800/e7836dd955/decking-step-stringer-substructure.jpg)
Alternatively you can create step stringers using appropriate width treated timber.
Step nosing installation
Method 1
Edge board step nosing
![](https://a.storyblok.com/f/162000/1200x800/ae0d910ae5/decking-step-nosing-edge-board.jpg)
Explorer edge boards can be used to create the perfect flush finish for steps
Install the edge boards and decking step treads as per parallel edge board installation instructions.
Method 2
Fascia board step nosing
For the step riser, attach Pioneer or Frontier fascia boards by screwing directly through into the step frame.
- Ensure to pre-drill 4mm countersunk pilot holes and do not overdrive screw
Install the fascia boards according to our fascia board installation instructions.
Method 3
Corner trim step nosing
![](https://a.storyblok.com/f/162000/1200x800/a76ad0545c/decking-step-nosing-corner-trim.jpg)
Install corner nosing trim when using Pioneer range deck boards for the riser.
- Ensure to pre-drill 4mm countersunk pilot holes and do not overdrive screw.
Install the corner trim according to our corner trim installation instructions.