Guide to external render profiles.*

For more modern properties there are now specially designed rendering materials that will protect your home from the problems caused by damp for many years.
The life of a render system depends on many factors. However, beading or trim used in an external render system is most important. Detailed solutions often decide whether a facade functions and can deliver what it promises.

You may be wondering what are beads?

There are different types of beads but most are designed to achieve the perfect finish and to protect your property from rainwater. Each of the profile is essential to the success of a system. Using the correct type of render beads for a rendered façade will ensure the best finished look, ensure durability and help protect the render from water damage, staining and cracking. Beads give a perfect finish for all renders from traditional sand & cement to contemporary through colour render.
New manufacturing techniques have made it possible to create beads that outperform and outlast even stainless steel beads.
Profiles must be durable and looks as good as the render itself.

Wemico® offers the highest standards of knowledge and service combined with the most comprehensive range of beads, profiles, trims and flashings, leaving the company unrivalled in it’s field.
It’s best to understand the types of beads that can be applied to a property.

Types of beads.
How do you choose the right one?

Movement joints

Expansion beads, also known as movement joints.They are designed to prevent cracking to render through thermal expansion and compression. Expansion joint are discreet but strong.
They also help to reduce the risk of cracking where different substrates or building materials join. Mainly used where the underlying substrate changes.

Bellcast beads

Also known as drip beads or bell stop beads - create an angled lip at the lower edge of external render. They are designed to provide a stop to the render just above the damp proof course and above reveals to produce a straight edge, provide protection against impact and deflect rain water. Can also be used as an architectural feature at each storey to provide a shadow. 
Bell cast beads allows any water running down the face of the render to drip straight off. This type of bead is commonly used above doors, windows.

Angle beads

Also known as corner beads or quoin beads.They are used on corners and returns of external rendered elevations to produce a straight edge and provide protection against impact. Can also be used for internal plastering applications.
They also can act as a guide to the depth when applying the render. Its strong rigid arris protects and reinforces plaster where it is most vulnerable.

Stop Beads

Also known as stop end beads, create a square finished edge for external render systems. Designed to provide a stop to the render at window and door frames and at changes to the facade to produce a straight finish and protection against impact. Can also be used for internal plastering applications. Mainly used on door frames, soffits, copings, other claddings or building fabrics.
Stop beads can also be used to create decorative feature panels within the render.

Aluminium Base Track

Starter trim is an aluminium plain mill finish box shaped bead designed for various thicknesses of insulating panels.

It is used in EWI systems as a cover for the lower part of the thermal insulation material of Expanded Polystyrene (EPS), Kingspan K5 or Mineral Wool against mechanical damage and pests.

Galvanised Steel heavy duty base track with PVC drip bead 

Heavy Duty Base Track with PVC Drip Bead is a full system starter profile designed for External Wall Insulation (EWI) and thin coat rendering made from PPC Galvanised Steel.

It is used in insulated render systems as a cover for the lower part of the thermal insulation boards (Expanded Polystyrene Grey and White (EPS), Kingspan K5 or Mineral Wool) against mechanical damage, abrasion, corrosion and pests.

Mesh beads

Mesh beads for rendering are designed to work with all External Wall Insulation Systems (EWI). It is to be used around window and door reveals within a thin coat rendering / plastering or composite external wall insulation. Bead also helps to achieve strong and sharp reinforced 90-degree corners on the walls to protect the section against cracking or impact damages. 

Stainless Steel base track with PVC nosing

Made from resistant to corrosion and staining, low maintenance stainless steel. It is used in insulated render systems as a cover for the lower part of the thermal insulation boards: Expanded Polystyrene (EPS) Graphite and White, Kingspan K5 or Rockwool slabs against mechanical damage, abrasion, corrosion and pests.

Render mesh

This superior grade glass fibre reinforcement mesh adds strength to all EWI, ETICS and plaster applications. Usually embedded into the base coat of the render or plaster it adds resistance to cracking and impact damage. Designed to prevent cracking and impact damage to render and plaster at stress points, areas of high traffic or surfaces that are likely to experience impact or localised pressure. Diagonal strips of render mesh should be used at the corners of all reveals that are rendered. Render mesh is fast and easy to cut to length with scissors or tin snips.

Dry lining beads

Dry lining beads offer the perfect solution for skim plastering and drywall applications. Because they are made from cost-effective recycled PVCu, they offer a value for money alternative to metal products. They are guaranteed not to stain during a lengthy drying out process. They are simply fixed with nails or staples through the wing of the bead.

Window and Door Frameseal Bead

Profile with an adhesive strip to enable use of a protective film during the Thin Coat Rendering in External Wall Insulation Systems.

Frame-seal beads are easy to handle and install products designed for window reveals and door frames.

Window Head and Balcony Drip Bead with Mesh

Versatile PVC profile designed to prevent excess water from accumulating on the underside of window heads and balconies within external wall insulation (EWI) systems.

This quick and easy to install plastic window head and balcony corner mesh bead with drip/nosing profile and alkali resistant fibre-glass mesh wings helps to protect insulated render systems from water penetration.

Aluminium Stop Track

Aluminium Stop Track is a high-quality resistant to corrosion and atmospheric factors end trim designed for EWI (external wall insulation) systems and thin coat rendering.

The insulation end profile is an aluminium plain mill finish box shaped bead designed for various thicknesses of insulating panels.

Stop Rail is made of a self-hardening aluminium alloy with magnesium and silicon additive

Heavy Duty Stop Bead with PVC Drip Bead 

Heavy Duty Full System Stop Bead with PVC Drip-Nosing is a perforated full system stop profile designed for External Wall Insulation (EWI) and thin coat rendering made from PPC Galvanised Steel.

The insulation end beads are used on the sides of insulated render systems as a cover for the thermal insulation boards: Expanded Polystyrene (EPS) Graphite and White, Kingspan K5 or Rockwool slabs against mechanical damage, abrasion, corrosion and pests.

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