What size render beads to use?

a 10mm bead can be used with a 15mm render providing that the bead is fixed to allow for sufficient render thickness. Some contractors prefer the assurance of using beads that are designed at the render specified thickness as to eliminate any on site risks.

What size render stop bead?

PVCu stop beads for thin coat/acrylic render

Type Stop beads
Product accreditation BBA certified BS EN 13914-1:2005
Fixing Glued Mechanically fixed
Suitability External walls
Bead dimensions (mm) 2500mm long

What beads do I need for rendering?

choose the right render beads to prevent render cracking

  • Bellcast Bead or Drip Bead. Bellcast beads, also known as drip beads or bell stop beads, create an angled lip at the base of a rendered wall and above windows or apertures. …
  • Angle Bead. …
  • Stop Bead. …
  • Expansion Bead. …
  • Render bead colour. …
  • Specialised bead.

What size beads for Monocouche render?

15mm UPVC beads are supplied to achieve a defined and functional finish when installing the Monocouche XF and EcoRend EXF systems. Installed at rendered corners and returns to achieve a consistent angle and protecting against impact.

Do you need corner bead for render?

Corner bead is used on all external corners on render-only systems. It is a pretty important component of the render/external wall insulation system and in this blog we look at what it is, where it is used and why!

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How do you fit render stop beads?

At a change of finish, stop beads can be fixed either mechanically or onto render or mortar dabs. Leave a gap of 8-14mm between bellcast beads at a movement joint and fix the bead over the top on render dabs, adhesive mortar or with mechanical fixings and plumb straight.

How thick should render be?

Render prepared on site using standard sand and cement must be at least 20 to 25mm thick. However, the capability of the render is dependent upon the quality of the sand used, the design mix and is heavily reliant on good mixing techniques by the applicator.

Which type of bead should not be used for rendering?

‘Providing reinforcement and resisting impact damage’

Galvanised steel beads should not be used externally. “Simply put, galvanised steel in external rendering may rust, which will reduce the lifespan of your work and can be costly to put right. But the good news is it’s easily avoided.

What is the best mix for rendering?

A common mix ratio used for rendering is 6 parts sand, 1 part cement and 1 part lime. Any general purpose cement can be used, although the sand should be fine and clean of impurities. Coarser sand is usually used as the base layer and slightly finer sand for the top layer.

What is a drip bead?

The Bellcast, or Drip Bead, is designed to prevent water accumulation in outdoor renders. Water drips through the design of the bead with its multiple holes. There is no staining resulting from the installation of this specialised bead.

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What size are Bellcast beads?

Typically the 11mm bellcast bead is used in scratch/monocouche systems and this 6mm bellcast bead is used within thin coat silicone render systems.

How thick is Weber render?

It is available in a range of colours. It can also be applied as an internal plaster on the inner face of masonry walls. Overall thickness varies from a minimum of 15mm to a maximum finished thickness of 25mm. Weber Monocouche Renders can normally be applied without a scud (splatter dash) coat.