One of the most common misconceptions we hear is that installing a stainless steel balustrade is a job for the professionals — that it requires welding, specialist tools, or trade qualifications. The truth is that with the right components and a clear plan, a competent DIY homeowner can achieve a result that is completely indistinguishable from a professional installation. And the savings are substantial.

This guide walks you through the complete process of installing a stainless steel deck or balcony balustrade using Balustrader’s bolt-down stanchion system. No welding required. No specialist equipment beyond what most homeowners already own or can easily hire.

What You Will Need

Tools:

  • Tape measure and marking pencil
  • Drill with HSS metal drill bits and masonry/timber bits as appropriate for your surface
  • Spanner or socket set (for stanchion bolts)
  • Tube cutter or angle grinder with cutting disc (for trimming handrail tubing to length)
  • Spirit level
  • String line (for aligning stanchion positions)
  • Silicone gun (for slotted tube installations)
  • Safety glasses and gloves

Components (from Balustrader):

  • Bolt-down stanchions — 900mm height, in your chosen infill configuration (round tube, slotted tube, or glass)
  • Horizontal infill tubing — round tube (50.8mm or 38.1mm) or slotted tube as applicable
  • Handrail tubing — round or flat oval, to cap the top of the balustrade
  • Stanchion base cover plates (optional, for a cleaner finish over the bolt heads)
  • Appropriate fixings — stainless steel anchor bolts for concrete/masonry, or stainless coach screws for timber

Not sure exactly which components you need? Use our free DIY Estimate service at www.balustrader.co.za — our team will specify everything for your project based on your measurements, surface type, and chosen style.

Step 1: Measure and Plan Your Layout

Before you order a single component, spend time getting your measurements right. This is the step that most DIYers rush, and it is the one most likely to cause problems later.

  1. Measure the total linear length of balustrade required, including all straight runs and any corner sections.
  2. Determine your stanchion spacing. As a general rule, stanchions should be spaced no more than 1,000–1,200mm apart for structural integrity. Mark your spacing on the deck surface with a pencil.
  3. Check the SANS 10400-M requirement for balustrade height. For domestic applications, the minimum height is 1,000mm measured from the finished floor or deck surface to the top of the handrail. Our stanchions are 900mm, designed to achieve the correct finished height when the handrail tube is fitted on top.
  4. Plan your corner and end stanchion positions. Corners require specific stanchion variants — our team can advise on the correct selection for your configuration.
  5. Count your total stanchion quantity, total linear metres of infill tube, and total linear metres of handrail tube. Add 5–10% wastage for cutting.

Step 2: Mark and Drill Your Fixing Holes

With your layout planned and marked, you’re ready to drill. The approach varies slightly depending on whether you’re fixing into timber, concrete, or masonry.

Timber decks:

Use stainless steel coach screws into the structural deck boards or joists. Pre-drill to prevent splitting, and ensure you’re fixing into the structural member rather than just the decking boards. The stanchion base plate sits flush on the deck surface.

Concrete or masonry balconies:

Use stainless steel anchor bolts (chemical or mechanical) rated for the load. Drill to the depth specified for your anchor type, clear the dust from the hole thoroughly, and allow chemical anchors to cure fully before loading the stanchions.

Important: Always check that you are not drilling into reinforcing steel, service conduits, or waterproofing membranes. If in doubt about your balcony slab structure, consult a structural engineer before drilling.

Step 3: Install the Stanchions

  1. Position the first stanchion at one end of your run. Use a spirit level to confirm it is perfectly plumb — this is critical, as a leaning stanchion is immediately visible once the infill tubing is fitted.
  2. Insert and tighten the fixing bolts, checking plumb again once tightened as the stanchion can shift slightly during this process.
  3. Run a string line from the first stanchion at the correct height to the far end of the run. This gives you a reference line to align all intermediate stanchions.
  4. Install each intermediate stanchion in sequence, checking both plumb (vertical) and alignment (along the string line) for each one.
  5. Install corner and end stanchions last, as their positions are determined by the straight runs.

Pro tip: Do not fully tighten every bolt until all stanchions in a run are positioned. This allows you to make minor alignment adjustments before locking everything down.

Step 4: Fit the Infill Tubing

The method for fitting infill tubes depends on whether you’re using round tube stanchions or slotted tube stanchions.

Round tube infill:

Round infill tubes (50.8mm or 38.1mm diameter) pass through pre-machined holes in the stanchion body at the specified infill heights. Measure the required tube length for each run — the distance between the inner faces of the end stanchions — and cut to length using a tube cutter or angle grinder. Deburr the cut ends with a file or flap disc for a clean finish. Slide the tubes through from one end, working from bottom to top.

Slotted tube infill:

Slotted tube systems hold the glass panels or act as a frame for glass infill. The slots in the tubing accept the glass edge directly, with a neutral-cure silicone sealant or clear rubber gasket providing the seal. Cut tube to length, fit the lower horizontal first, insert the glass panel, then fit the upper horizontal. Allow silicone to cure fully (typically 24 hours) before handling.

Step 5: Fit the Handrail

The handrail tube runs along the top of the stanchions and is the finishing element that brings the whole installation together. Measure the full length of the run including any overhang at the ends, cut to length, and fit into or onto the stanchion caps as specified for your stanchion model.

For a continuous handrail around corners, your tube will need to be rolled to the correct angle. Balustrader offers an in-house tube rolling and fabrication service from our Cape Town workshop — contact us in advance if you need curved or angled handrail sections.

Step 6: Final Checks

  • Check every stanchion bolt is fully tightened
  • Check all infill tubes are seated correctly in their locating holes or slots
  • Check the handrail is secure and cannot be lifted off the stanchion caps
  • Apply a stainless steel cleaner and passivator to the completed installation — this removes any fingerprints, cutting residue, or surface contamination that could cause staining
  • Measure the finished handrail height from the deck surface to confirm SANS 10400-M compliance

How Long Will This Take?

For a confident DIYer working alone, a standard 8–10 metre straight deck balustrade typically takes one full day: half a day for layout, drilling, and stanchion installation, and half a day for infill tubes and handrail. Working with a helper significantly reduces this.

More complex installations with multiple corners, stairs, or glass infill will take longer. We always recommend completing the installation over a weekend rather than rushing it in a single day.

Ready to Get Started?

Our DIY Estimate service is the easiest way to get started. Tell us your measurements, surface type, and preferred style, and we’ll provide a full component specification and price estimate. No guesswork, no wasted material.

Visit www.balustrader.co.za, email sales@balustrader.co.za, or call +27 64 044 1440. Our Cape Town team is available Monday to Friday, 08:00–17:00.

Start your project today — get a free DIY Estimate at www.balustrader.co.za