Fortress Railing: A 7-Point Quality Checklist Before You Sign Off

As a quality compliance manager, I review every railing delivery before it goes to a job site—roughly 200 unique orders a year. In 2024, I rejected 11% of first deliveries. Not because the factory does bad work. Because the wrong grade, wrong glass, or wrong cap makes it into a batch and someone has to catch it.

This checklist is for contractors and distributors who order Fortress Railing products and don't want to discover problems after installation. Seven checkpoints. Ten minutes at delivery. That's it.

1. Confirm the material grade: Fortress AL13 Plus vs FE26

Start with the metal. A surprising number of orders ask for Fortress AL13 Plus railing, but a Fortress FE26 railing shows up instead. Both are Fortress products, but they are not interchangeable.

AL13 Plus is extruded aluminum. It's lighter, corrosion-resistant, and a solid choice for outdoor decks and balconies. FE26 is hot-dip galvanized steel—tougher for commercial stairs and high-traffic areas where impact resistance matters more than weight. If the label says AL13 but the bundle feels heavy, stop and check.

If you're mixing both materials on one project, separate the bundles before unloading and label each one. This will probably save you an afternoon of sorting later. I learned this the hard way. In my second year, I approved a batch of 'aluminum' posts without checking the grade. It was FE26 steel. The customer needed corrosion resistance near salt water, and the $22,000 redo came out of our project budget. Now every contract lists the grade, and I check the label before anything else.

2. Verify the tempered glass panels

Tempered glass is safety glass, but the word 'tempered' gets thrown around loosely. Here's the thing: real tempered glass has a permanent etched mark. If it doesn't have one, it's not certified tempered glass.

Look for a mark like 'ANSI Z97.1' or 'CPSC 16 CFR 1201' on every lite. It's usually in a corner and can be faint, so angle the glass if needed. The glass thickness should match the railing drawing, not a guess. A panel that's too thin may meet the letter of the label but still flex under load.

One detail most people skip: check the edges. Tempered glass edges should be smooth. A small chip at the edge can grow into a crack under thermal stress or wind load. I reject any panel with an edge chip bigger than about a millimeter. That rule has saved me more times than I care to admit.

Rule of thumb: if it says tempered glass, it must have an etched mark. No mark. No install.

3. Count post caps and check the 'graduation cap' style

Post caps are small, which is exactly why they get missed. Missing caps are the number one cause of 'partial delivery' calls. Count them before the truck leaves.

Fortress makes several cap profiles: flat caps, pyramid caps, and the graduation cap style that fits over a square post with slightly sloped sides. The graduation cap is popular on contemporary railings. It has a small ledge where water can sit, so make sure each cap has a weep hole or gasket. No drainage means corrosion issues in freeze-thaw climates.

Brackets deserve the same attention. Post brackets, stair brackets, glass adapters—these are the parts that get swapped or shorted. If a box says 50 brackets and only 48 fit the rail profile, that's a problem. Check that they match the post wall thickness, especially on steel posts.

4. Check weld quality and surface finish

Run your hand along the welds. They should be smooth, continuous, and free of undercut. Sharp edges are a quality issue and a safety issue.

For FE26, pay extra attention to the galvanized surface. If the zinc coating is chipped, rust will show up in months. Touch it up with zinc-rich paint before installation.

For AL13 Plus, inspect the powder coat. Scratches down to bare metal should be addressed now, not after the railing is installed. Touch-up kits work—you just have to use them. Look for orange peel or cratering in the finish around corners and welds.

5. Measure heights and spacing

Don't trust the drawings alone. Field-check the delivered parts against the mounting surface.

Typical guardrail height is 36 inches for residential, 42 inches for commercial, but local codes can change that. Measure the posts and rails before installation. A quarter-inch difference might look minor, but it's a code violation at inspection.

Balusters usually need to be within 4 inches at their widest point. For glass panels, the gap between panels should be uniform—roughly 1/8 inch, though I might be misremembering the exact spec if I don't have the drawing in front of me. Uneven gaps mean the brackets are misaligned or the glass was cut wrong.

Set a level against each post and anchor bracket. A post that leans more than a quarter-inch over its height will be visible after the rail is installed. Fixing a leaning post after installation costs more than fixing it during layout.

6. Check coatings—and the 'how to turn off liquid glass' question

If you're installing tempered glass outside, you might apply a protective nanocoating, sometimes sold as liquid glass. It makes water bead off and keeps the glass easier to clean. But I hear the same question again and again: 'how to turn off liquid glass?'

The coating isn't an electronic system. There's no switch. What people usually mean is how to remove an existing liquid glass coating so a fresh coat can go on. The honest answer: use a stripper made for nano-coatings. Apply, wait the time listed on the label, wipe off, then clean the glass with isopropyl alcohol. Don't use a razor blade. Tempered glass can take a lot, but scraping off a hydrophobic coating risks scratching the surface.

If the liquid glass hasn't cured yet, you don't need to turn it off. Just remove the wet coating with glass cleaner and a microfiber cloth before it dries. The key is reading the manufacturer's instructions. There's no universal magic step.

And don't use acid-based glass cleaners on coated glass. They can break down the sealant and the coating over time.

7. Match the paperwork

Last checkpoint: paperwork. Ask for the bill of lading, material certificates, and lot numbers. Match them to the purchase order. If the box says FE26 but the order says AL13 Plus, don't start installation. Call your rep and sort it out first.

Take photos of damage or mismatched parts the same day. Delaying a claim costs you leverage. In my experience, suppliers want to fix it—they just need evidence. Keep a signed delivery receipt with the photos in the project file.

Common mistakes I see at delivery

The issues that slow projects down aren't usually the railing itself. It's the small stuff: missing post caps, a chipped glass edge, a thick paint blob on a weld. Catch them at delivery and you save days of back-and-forth.

Also, don't clean Fortress aluminum or tempered glass with strong acids or alkaline degreasers. Neutral pH cleaner and water handle most jobs.

And if you use a liquid glass coating, apply it to clean, dry glass and let it cure before crews start handling it. Trying to 'turn off' a wet coat by wiping it too aggressively will leave streaks. Let it do its job.

That's the checklist. Seven checkpoints, about ten minutes. It will probably feel like overkill until the day it catches a bad batch—and then it will save your schedule. I'd rather reject a delivery at the gate than redo an installation at the end.