What else is involved in the EWS process?
Documentation evidencing the type of materials included in the construction of the external walls will need to be reviewed. A review of design drawings may assist but on their own would not be sufficient, and ‘desktop study’ would not comply with the EWS1 process. Photographic or other evidence should be gathered from a physical inspection of the site to satisfy the requirements of the EWS1 form.
Intrusive tests may be required if insufficient or inconclusive documentation is available. This could include opening up works to the external walls and cladding to check the make up of construction and the quality of installation.