English: fire integrity
Welsh: gallu i wrthsefyll tân
Subject: Tân ac achub
Welsh definition: In a piece of construction material, the quality that prevents fire on one side of the material from being transmitted to the opposite side within a designated time period.
Welsh context: Wrth gwrs, mater i landlordiaid yw ystyried yr holl wybodaeth a chyngor arbenigol sydd ar gael iddynt er mwyn llunio barn ynglŷn â gallu cyffredinol eu hadeiladau i wrthsefyll tân.