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Raised or flattened expanded metal

Updated: 23 October 2026

The frame needs a flush sheet, and a wet step needs grip. Raised or flattened expanded metal is that choice. Raised mesh keeps the angled strand, for grip and a plaster key. Flattened mesh is rolled into one plane. If the listing prints neither word, do not guess from the price. The [expanded metal comparison](/hub/diy-supplies/expanded-metal) holds the five listings. This page is only the profile. Peter F. used The Expanded Metal Company’s measuring guide on 21 October 2026. We did not flatten a sample. A qualifying purchase can earn a commission at no extra cost to you.

The frame needs a flush sheet, and a wet step needs grip. Raised or flattened expanded metal is that choice. Raised mesh keeps the angled strand, for grip and a plaster key. Flattened mesh is rolled into one plane.

Our top picks

PH PandaHall PH PandaHall two-piece sheet

Best overall

PH PandaHall PH PandaHall two-piece sheet
4.4/10about £16.39
View offer
Gisafai Gisafai four black sheets

Rank 2

Gisafai Gisafai four black sheets
7.0/10about £68.11
View offer
National Hardware National Hardware 12 inch sheet

Best value

National Hardware National Hardware 12 inch sheet
6.2/10about £26.87
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On this page
  1. 1.Raised is the first shape
  2. 2.Flattened is a second roll
  3. 3.What this set actually says
  4. 4.When raised, when flattened

Raised is the first shape

Raised expanded metal leaves the expanding press with strands at an angle. Overall height is taller than the metal, and that height is not strand thickness. Grip and a plaster key come from the angle. Mill walkway mesh is raised and fixed. A raised offcut is not a floor. Measure long-way and short-way pitch, centre to centre, not the clear hole. The Expanded Metal Company uses pitch on the raised sheet and aperture after flattening. A 12 inch square or a 20 m coil has no pitch unless the listing prints one. Other sellers sometimes call brick coil raised. The AB Tools listings do not, so that word stays off them.

Flattened is a second roll

Flattened mesh is raised mesh after a second roll, flush enough to frame. Metal Mesh UK points it at frames. You measure the clear aperture, because pitch no longer describes the hole. Expanding does not thin the strand. Flattening can, by about 10 to 20 percent, and only when you know the starting thickness. If thickness matters, buy a pattern code that states it. Fine Mesh Metals prefers flattened mesh underfoot because it snags less, and raised mesh for fencing. A walkway range from the same mill uses raised mesh for grip, with clips. Both can be true of specified products. Neither makes a loose square a floor.
PH PandaHall PH PandaHall two-piece sheet

Testsieger

PH PandaHall PH PandaHall two-piece sheet
4.4/10about £16.39
View offer

What this set actually says

Only Gisafai says flat and prints an opening, about 50 by 23 mm. That is an aperture, so the title and the hole agree. No strand is printed, so the 10 to 20 percent note does not give you a finished thickness. United States reviews call the edges sharp. Flat is not a walkway certificate. Filing is the how to cut expanded metal page. National Hardware reviewers describe a flat grate. The specification row does not say flattened and prints no aperture. A photo does not write the pattern code. The pack-count clash is on the best expanded metal page. The coils and PandaHall leave the profile blank, and PandaHall also says perforated.

When raised, when flattened

Choose flattened mesh for a flush frame, screen, or filter, and only if the listing says flat or prints an aperture. Gisafai is the only row here that does both. It still has sharp edges and no guard certificate. Choose raised mesh for grip or a plaster key only when a pitch is printed. None of these five prints a raised pitch. If people will stand on it, buy a fixed walkway mesh. A small flat sheet is the wrong shortcut. If the listing says neither raised nor flat, ask for the pitch or the aperture rather than using the price.

Common questions

Which one is better for a frame?
Flattened mesh, if the frame has to close on a flush face. Metal Mesh UK points flattened sheet at welding into a frame for that reason. The condition is that the listing says flat or prints the aperture. In this set, Gisafai is the title that does. A sheet that never states the profile is not a frame mesh yet, however square the photo looks.
Which one gives grip?
Raised mesh, because the angled strand stands proud. Mill walkway products use that grip, with fixings and a test, not as a word on a small sheet. Fine Mesh Metals prefers flattened mesh where people walk because it snags less, and prefers raised mesh for security fencing. Grip and snagging are different conditions. A loose amazon.co.uk square is not a walkway in either reading.
Does flattening make the metal thinner?
It can. The Expanded Metal Company says the expanding pass does not thin the strand, and the flattening pass can reduce thickness by about 10 to 20 percent. That is a general process note. Gisafai’s listing does not print a strand thickness, so you cannot apply the percentage to those four sheets and arrive at a finished size. If thickness matters, buy a pattern that states it.
Is the Gisafai sheet flattened?
The title says flat, and the opening of about 50 by 23 mm is the kind of clear hole you measure on flattened mesh. That is as far as the listing goes. It does not print a strand, a pattern code, or a walkway rating. US reviews describe sharp lattice edges. Treat it as a flat sheet with a stated opening, and file the edges, rather than as certified flooring.
What if the listing does not say raised or flat?
Do not guess, and do not use the price as the guess. The AB Tools coils, the PandaHall sheets, and the National Hardware specification row do not state a profile. Reviewers who call the National Hardware grate flat are describing a use, not writing the pattern code. Ask for pitch or aperture, or move to a stock sheet that prints them. A silent listing is an offcut until those numbers arrive.

Related pages

Expanded metal buying guide

Expanded metal

Best expanded metal: fit the printed form to the job

Expanded metal brick reinforcement: 63 mm or 100 mm

How to cut expanded metal: mark, clamp, cut and file

Sources

Public UK sources and the amazon.co.uk listings compared on this page. Updated 22 October 2026.

  1. The Expanded Metal Company: how to measure and specify (retrieved 22 October 2026)
  2. Metal Mesh UK: technical notes (retrieved 22 October 2026)
  3. BSI: BS EN 845-3:2013+A1:2016 bed-joint reinforcement (retrieved 22 October 2026)
  4. TECO: expanded metal lath coil (retrieved 22 October 2026)
  5. Grayson: galvanised brick reinforcement (retrieved 22 October 2026)
  6. HSE: using the right type of PPE (retrieved 22 October 2026)
  7. Cadisch: safety when working with expanded mesh (retrieved 22 October 2026)
  8. Consumer Rights Act 2015 (retrieved 22 October 2026)