The panel arrives welded in one piece with the posts on and the holes drilled. What is left is bolting four plates to something solid — and that part is worth doing exactly right.
Steel indoors, aluminum outdoors. On a deck or porch the same panel is built in aluminum, and it bolts down the same way.
In the box
- Your panel, welded to the width you ordered, posts already on, powder coated
- Base plate covers that snap over the plates when you are done
- Lag screws and washers for wood framing
- If your run is over 6 ft: two panels that join in line, with the hardware to do it
Concrete anchors are not in the box — the right anchor depends on your slab, and the wrong one is not something we will guess at. See the concrete section below.
Tools you need
- Drill / driver
- 1/4" bit for pilot holes in wood
- Ratchet with a 9/16" socket for the lags
- 4 ft level, tape measure, pencil
- A second pair of hands for ten minutes — a panel is easier to plumb when somebody holds it
No welding, no cutting. The posts are already part of the panel.
Before anything: what the railing has to do
A deck guard is not decoration — code asks it to take a hard sideways shove at the top rail without letting go. That is why every step below is about what the plates bolt into. The panel itself is welded steel or aluminum; the connection is the part you are building.
Step by step — wood framing
- Mark the plate positions. Set the panel where it will live and pencil around each base plate. The plates should sit on solid framing — a rim joist or blocking — not on deck boards alone. Deck boards are 1" of softwood: a lag that only reaches a board holds the board, not the railing. If there is no framing under a plate position, add blocking underneath first — a piece of 2×8 screwed between the joists is a ten-minute job.
- Drill 1/4" pilots. Through your marks, into the framing. Depth of the lag, plus a little.
- Stand the panel and start all four lags loose. 3/8" lag with a washer in every hole, all started before any is tightened — exactly like a car wheel. One tightened corner first will fight you on the other three.
- Plumb the posts, then tighten in a cross pattern. Level on the post, not the top rail. Snug all four in a cross, check plumb again, then final tighten. If the deck has a slight slope a washer or two under one edge of the plate levels the post — that is normal, not a defect.
- Join sections if you have them. Runs over 6 ft arrive as two panels that meet in line at a post pair. Bolt the joint with the hardware supplied, and treat the two posts at the joint as one — both plumb, both tight.
- Snap the plate covers on. They hide the lags and shed water off the plate. Last thing, once everything is tight.
Concrete, pavers or stone — read this first
Concrete is where guardrails fail, and it is almost never the steel — it is the anchor. The right fixing depends on how thick your slab is, how close the plate sits to the edge, and whether the concrete is solid or block. A wedge anchor that is perfect in a 6" garage slab is wrong near the edge of a 4" patio.
So we will not print one anchor and call it universal. Before you order — or before you drill — send us two photos of where the posts land and the rough slab thickness if you know it, and we will tell you exactly what to buy for your situation: 848-986-6481. Two minutes on the phone against a railing you can lean on for twenty years.
Three things people get wrong
Bolting to deck boards. The most common failure on wood decks. The plate must reach framing — rim joist or blocking. If you can see the lag threads under the deck, they went through into air.
Measuring post to post. Panels are ordered by the overall opening — wall to wall, or post to post of the space the railing fills. Measure the whole opening, not a guess at where posts might land. Our slider prices every inch, so the real number costs nothing extra.
Tightening one corner first. Pulls the plate out of level and the post out of plumb, and then every other hole is a fight. All four started loose, then a cross pattern, like a wheel.
Not sure what is under your deck boards, or what your slab is? Call or text 848-986-6481 with a photo. You are talking to the person who welded the panel.