Fire Rating Definitions

Integrity only is a rating that restricts the progress of the fire through the fire rated fabrication. It does not offer any protection against the heat generated by the fire. Where the rating has an S suffix, it offers protection against the passage of smoke.

• 30/0 – 30 minutes integrity/0 minutes insulation
• E30 – 30 minutes integrity only/0 minutes insulation
• E30(S) – 30 minutes integrity/0 minutes insulation but with Smoke protection
• FD30 – Fire Door 30 minutes integrity only/0 minutes insulation
• FD30(S) – Fire Door 30 minutes integrity/0 minutes insulation but with Smoke protection

An Integrity and Insulation rating not only offers the protection against the progress of the fire but also offers Insulation against the heat generated. As with Integrity only where the rating has an S suffix it offers protection against the passage of smoke.

Substitute 30 with 15, 60, 90, and 120 as necessary.

• 30/30 – 30 minutes integrity/30 minutes insulation
• EI30 – 30 minutes integrity only/30 minutes insulation
• EI30(S) – 30 minutes integrity/30 minutes insulation but with Smoke protection
• FD30/30 – Fire Door 30 minutes integrity only/30 minutes insulation
• FD30/30(S) – Fire Door 30 minutes integrity/30 minutes insulation but with Smoke protection

We can advise on which system has the rating the enquirer needs, but the client would need to contact the relevant Planning Office to ascertain the rating required in each situation as given in the Building Regulations Document B.