Introduction
The installation of roof trusses, also known as trussed rafters, requires specific construction skills involving working at height and handling unstable materials.

Housebuilders need to keep safe throughout this process by examining health and safety information and reviewing safe working practice documents.

In this post we will provide you with guidance on implementing procedures to your site for the safe installation of roof trusses whilst working at height.

Roof truss installation checklist

Prior to installing your roof trusses it is imperative that a full site-specific risk assessment has been completed. Furthermore, the installation of timber roof trusses should only be carried out by suitably experienced and qualified personnel – those with a Level 2 Diploma in Site Carpentry.

Before you begin:
Thoroughly check and read all assembly drawings and information provided by Scotts Timber Engineering
Ensure all personal protective equipment (PPE) is correctly worn
Confirm that all scaffolding is in place and has been signed off
A safe working platform within the structure is strongly recommended
Ensure hop-ups and scaffolding edge protection are securely in place
Identify the easiest starting point using the simplest roof of trusses

Stay safe whilst working at height

As mentioned previously, installing roof trusses requires specific construction skills which involve working at height, handling dynamically unstable materials and should only be undertaken by qualified personnel. The contractor is responsible for completing a site risk assessment and developing a safety method statement before any work commences onsite.

Around the perimeter of the roof a safe working platform should be provided, using edge protection boarded scaffold with guard rails and suitable access onto the roof (for example, a stair tower). Additionally, detailed measures should be put in place to prevent or mitigate the distance of a fall, should one occur. This can be done by providing a working platform or ‘crash deck’ immediately beneath the underside of the trusses.

Furthermore, The Work at Height Regulations requires weather conditions to also be considered when planning any work. For roof trusses not installed and fully braced, high wind conditions can present particular risk. The TRA supports the NFRC recommendation that roof installation activity involving components greater than five metres should cease when the mean wind speed reaches 17mph (gusting to 26mph or over).

Installing your roof trusses

Once all the above has been put in place and considered the installation of your roof trusses can take place. Due to the size and shape of trusses, it is essential to use mechanical handling for all except the smallest sized trusses (where manual lifting can be considered).

As a leading member of the Trussed Rafter Association (TRA) we are able to provide our customers with copies of documents outlining the safe working practices for installing your roof trusses.

Documents
HOW TO SAFELY INSTALL ROOF TRUSSES
INTRODUCTION TO THE STORAGE AND INSTALLATION OF TRUSSED RAFTERS ONSITE

For more delivery and installation information please click here. Alternatively, for further assistance, please contact the Scotts Timber Engineering team on 01527 520550.