2m Corner Bead with Mesh, 4mm Nose PVC Profile, Atlas L200

This 2m corner bead with mesh is a PVC corner profile with a 4 mm nose and fibreglass mesh wings, sold one 2.0 m length at a time for external corners on insulated and thin-coat rendered walls. It is the short length in the corner bead range, and Renders World sells it under the Atlas name as the L200.

What the 2m Corner Bead with Mesh Is

The product name and the shop photograph describe one piece of the bead as follows.

• Length — 2.0 m per piece, the L200 in the product name.
• Nose — 4 mm, as the product name states.
• Body — a white PVC bead in the shape of an angle, with rows of oblong holes along both legs and a rounded nose on the arris.
• Mesh — a sheet of fibreglass mesh on each leg, running out past the plastic.
• Not on the listing — the width of each mesh wing, the mesh weight, the leg width and the angle.

The Atlas Name and the Atlas Sheet

Renders World has sold this bead as an Atlas corner with a 4 mm nose under its old shop address and its current one. The Atlas sheet for façade profiles in external wall insulation, revised 11 January 2022, lists its corner profile in one length only: 2.5 m, in packs of 50. A 2.0 m corner with a 4 mm nose is not in that table, and the Atlas trade price list of September 2024 carries no PVC façade corner at all. The bead may still come from Atlas, but no Atlas document describes this exact piece, so before a large order:

1. Ask for the label on the carton, or ring Renders World, if the maker matters to your specification.
2. Check one bead against your basecoat before you commit a whole elevation to it.
3. Order the 2.5 m bead if your specification calls for the Atlas corner profile in the length that sheet lists.

How Atlas Fits Its Corner Profiles

For the corner profiles in its own range, Atlas sets them on edges exposed to knocks during the life of the façade: corners, and the reveals of doors and windows. Its sheet gives one method, and it is the method to follow for the 2m corner bead with mesh if the bead is the piece the shop name says it is:

1. Fix the insulation first. The bead goes on after the boards are fixed, before or while the system basecoat goes on.
2. Bed it in adhesive. Spread mesh-embedding adhesive along the edge, such as Atlas Hoter U adhesive or, on mineral wool, Atlas Roker U adhesive, press the bead against the edge and work its mesh into the fresh mortar until the mesh no longer shows.
3. Cover it with the wall mesh. When the adhesive is dry, run the system basecoat over the whole façade with the Atlas 150 fibreglass reinforcement mesh laid so that it fully covers the bead's own mesh.

The sheet has the beads cut to length with shears made for PVC beads. Where two lengths meet at a right angle, the ends are cut at less than 45° and the joint is filled with silicone filler. It asks for fixing above +5 °C and warns that the beads are less flexible between +5 °C and +15 °C.

How Many 2m Lengths per Corner

Each length of the 2m corner bead with mesh covers 2.0 m of corner, so divide the height of the corner by 2 and round up. The 2.5 m corner bead with mesh divides by 2.5 instead, and the difference decides which one wastes less on your building:

Corner or reveal	2.0 m lengths	2.5 m lengths
Reveal of 2.0 m	1, no offcut	1, 0.5 m offcut
Corner of 4.0 m	2, no offcut	2, 1.0 m offcut
Corner of 5.0 m	3, 1.0 m offcut	2, no offcut

Short reveals and corners in multiples of 2 m favour this bead. Tall corners in multiples of 2.5 m favour the longer bead and need fewer joints.

When Another Corner Bead Fits Better

The 2m corner bead with mesh is a straight bead for a square external corner. A curved head over a window or door needs an arch bead with mesh, which follows the curve where a straight PVC angle cannot. Stop beads, drip beads and the other profiles around an opening each do a different job, and the guide to which render bead goes on which detail sets them side by side.

• Square external corner, short run — this 2.0 m corner bead.
• Square external corner, tall run — the 2.5 m bead with mesh.
• Arched head — the arched bead with mesh.

Storage and Care of the Beads

The same sheet asks for the profiles to be kept flat, in a dry, heated room above +5 °C and protected from bending in transport. Under those conditions it gives a shelf life of 18 months from the production date on the packaging, and it rules out cleaning the profiles with agents containing chloride.

• Store — flat, dry, above +5 °C.
• Use within — 18 months of the date on the pack.
• Clean — never with a chloride cleaner.

Questions Before Ordering the 2m Corner Bead with Mesh

Is this the Atlas corner profile?

Renders World sells it under the Atlas name, but the Atlas façade profile sheet lists its corner profile at 2.5 m, not 2.0 m. Ask for the carton label before a large order if the maker matters to your job.

How many do I need for a 5 m corner?

Three 2.0 m lengths, one of them cut to 1.0 m. Two lengths of the 2.5 m bead cover the same corner with no offcut and one joint fewer.

Do I still need mesh across the wall?

Yes. The mesh on this bead covers the corner only, and the method has the wall mesh laid in the basecoat so that it fully covers the bead's own mesh.

Can I fit it on a cold morning?

The method asks for fixing above +5 °C and expects the beads to bend less readily between +5 °C and +15 °C. Below +5 °C, wait for the day to warm up.

For the whole job around an opening, from reveal to head, the guide to render detailing around windows and doors walks through each bead in place.