COSHH-75 Render (Cement-Based External Wall Render)
File Reference : COSHH Assessment Render
Date File Updated 01-04-26
Category COSHH Assessments
Tags: ISO 45001

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F HS5 COSHH Assessment Form
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Effective form templates

This example COSHH risk assessment has been prepared using the
F-HS5 COSHH Assessment form template which has been designed to record and manage the risks associated with substances hazardous to health and includes:

  • Substance details
  • Physical description
  • Health effects and first aid
  • Workplace exposure limits (WELs)
  • CLP hazard classification — visual hazard icons
  • Risk rating
  • Control measures
  • PPE required — visual PPE icons
  • Environmental considerations

The file is supplied in fully editable MS Word format and can be easily customised and saved to Google Docs format if required. The document uses pre-defined style formatting throughout with styles to match the risk-ratings. All text is in Calibri font for improved readability.
The following document labelling is included in the footer:

  • Form number and title
  • Information-classification
  • Version
  • Page number / total pages
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COSHH Assessment — Render (Cement-Based External Wall Render)

This pre-completed COSHH assessment covers cement-based external wall render — a Portland cement, sand and polymer modifier mix used for finishing and weatherproofing external masonry surfaces. Strongly alkaline when wet; may contain trace crystalline silica and hexavalent chromium (Cr VI).

What Does This COSHH Assessment Cover?

The assessment is fully completed and ready to use, covering all sections required for a complete hazardous substance risk assessment:

  • Substance identification — trade name (Cement-Based Render / External Wall Render), chemical name (Portland cement, sand aggregate, polymer modifiers; trace RCS and Cr VI), SDS reference and physical state
  • Health effects and first aid — dust causing respiratory irritation; wet render causing slow-developing alkaline skin burns and serious eye damage; Cr VI causing allergic dermatitis; specific first aid for each route
  • Alkaline burn and silica hazard — wet render is strongly alkaline (pH >12); burns develop slowly and can be serious; RCS where present is a Group 1 carcinogen
  • Workplace exposure limits — cement dust TWA 4 mg/m³ (respirable); RCS TWA 0.1 mg/m³, from workplace exposure limits guidance
  • CLP hazard classification — Irritant and Corrosive pictograms
  • PPE requirements — including safety goggles, PVC or neoprene gloves, coveralls and RPE during mixing and spray application
  • Emergency procedures — dry spill: vacuum or wet methods; wet spill: contain; do not wash to drain

Who Is This COSHH Assessment For?

This assessment is suitable for any workplace where external render is applied, including:

  • Rendering and plastering contractors
  • Construction contractors and housebuilders
  • Refurbishment and building maintenance teams
  • External wall insulation (EWI) system installers

COSHH Compliance

This document provides ready-to-use evidence of COSHH compliance and supports occupational health and safety management. The assessment is based on the F-HS5 COSHH Assessment template, is fully editable in Microsoft Word, and can be customised with your company details, site-specific information and review dates.

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