Render Beads: How to Choose Them


Render beads are an essential component of the rendering process, and choosing the right one can make all the difference in achieving the perfect finish. In this guide, we will discuss the different types of render beads available, their uses, and how to choose the right render bead for your project.

Types of Render Beads

Render beads come in various shapes and sizes, and each type has its unique purpose. Here are the most common types of render beads:

Corner Beads

Corner beads are used to reinforce the corners of the building, which are the most vulnerable areas to impact and cracking. They come in various shapes such as L-shape, U-shape, and bullnose, and are made of materials such as PVC, galvanized steel, and aluminum.

Movement Beads

Movement beads are designed to absorb any movement in the building structure caused by expansion, contraction, or settlement. They are flexible and come in different shapes, such as arch, stop end, and drip, and are made of materials such as PVC and aluminum.

Bellcast Beads

Bellcast beads are used to provide a stop end for the render at the bottom of the building. They prevent water from being trapped between the wall and the render, which can cause dampness and other problems. They come in various shapes, such as drip and angled, and are made of materials such as PVC and aluminum.

Render Stop Beads

Render stop beads, which are also known as stop end beads, are utilized to shield windows and door frames against any external impact. These beads are also installed against other building claddings, such as soffits or the underside area of the rafters of your roof. The main objective of these beads is to strengthen the plaster edges of these areas to prevent any possible damage.

Stop beads are vital in generating straight lines and a neat, refined finish in your render. They can be secured around your windows and doors using render bead adhesive, plaster or mechanical fasteners. In order to enhance their bonding process, they are equipped with perforated wings. It is usually advisable to apply a line of sealant on the back edge of the render stop bead to obstruct moisture from infiltrating your walls. When selecting stop beads, it is essential to consider their durability, resistance against impacts and elements, and their other qualities.

Mesh Beads

Meshed beads serve as a viable option for the installation of render beads. The mesh beads come equipped with mesh, enabling users to forgo the hassle of separately cutting and affixing mesh to the bead before embedding it in the base coat layer. Therefore, mesh beading allows for a more efficient installation process.

Typically, the mesh utilized in meshed beads is comprised of durable fibreglass material. Such beads prove particularly useful in external wall insulation and added support, as the mesh serves to reinforce the render and walls, allowing for the accommodation of structural movement, ultimately mitigating the development of cracks in the render. Moreover, meshed beads offer reinforcement to areas experiencing high levels of stress, including windows and doors, through the use of an overlapping mesh layer. These types of beads can also heighten adhesion between walls and the render system.

Choosing the Right Render Bead

Choosing the right render bead depends on several factors, such as the type of building, the location of the project, and the design of the building. Here are some tips to help you choose the right render bead:

Consider the Building Type

Different types of buildings require different types of render beads. For instance, a residential building may require a different type of render bead than a commercial building. Consider the building type and its purpose when choosing the right render bead.

Evaluate the Location of the Project

The location of the project is also an essential factor to consider when choosing the right render bead. If the project is in an area that experiences high wind speeds, you will need to choose a sturdy render bead that can withstand the wind. If the project is in a coastal area, you will need to choose a render bead that can withstand saltwater corrosion.

Assess the Building Design

The design of the building also plays a crucial role in choosing the right render bead. If the building has curved corners, you will need to choose a flexible render bead that can bend to fit the curves. If the building has straight edges, you will need to choose a render stop bead to provide a straight edge for the render to finish against.


Choosing the right render bead is essential in achieving the perfect finish for your project. By considering the building type, the location of the project, and the design of the building, you can choose the right render bead that will provide the necessary support and protection for your building. We hope this guide has been helpful in your decision-making process.

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