Links – Perkins & Perry

The following pdf files are available for download:

Perkins and Perry 2025 TRA Certificate

Perkins & Perry 2025 TRADA Certificate

Wolf Easi-Joist Certificate

PEFC Certificate

Certificate of Conformity of the Factory Production Control

Timber Frame CATG Certificate

Wolf Easi-joist Technical Guide, 6th edition

stock timber sizes

Other links:

Building Regulations

Royal Institute of British Architects (RIBA)

Velux rooflights