Glossary

C

Carrier

Any metal or plastic holder for a seal element.

Certifire

An independent quality assurance certification authority, which addresses relevant factors contributing to the fitness-for-purpose of products used in either fire or smoke protection. (Aligned with and managed by Exova, formerly known as Bodycote WarringtonFire Ltd.)

Clearance gap

The gap between a door leaf and its frame, or between the door leaf and the threshold.

Compartmentation

The division of a building into areas by using solid walls and floors to prevent the spread of fire and/or smoke.

Compression seal

A seal that becomes effective when a compressive force is applied to it – eg, when a door leaf closes onto it.

Concealed threshold seal

An automatic threshold seal designed to be mortised into the bottom of a door leaf where it is hidden from view.

Cover strip

A removable metal or plastic strip incorporated into a seal holder, intended to cover up unsightly screw fixings after the seal has been fitted and adjusted.

Cover plate

A removable metal or plastic plate designed to clip over the whole of a seal body, to cover screw fixings and give a smooth overall appearance.