Install fire doors and resolutely prevent the normally closed fire doors installed in the evacuation walkway, the front room of the smoke-proof stairwell or the shared front room from artificially making them normally open during use, and become "normally open" fire doors. In the event of a fire, Such a "normally open" fire door cannot prevent smoke and fire prevention; it is necessary to prevent the use of units from pursuing a decorative effect. The door frame of the fire door is cancelled and only a door cover made of ordinary wood is installed, and the original frame of the door leaf is replaced with something else. Material, a large range of decorative surface layer is applied, thereby destroying the fire-resistant coating and failing to achieve the fire-resistant effect. These two requirements are eliminated, and we hope that all users will do it.aluminum windows manufacturer
When installing the door frame and door leaf, it should be installed according to the opening direction of the door. The fire door must be opened in the evacuation direction. This can be said to be the most important point in the installation. The distance between the door frame and the surrounding wall should not be too large. If necessary, it should be filled with cement mortar or rock wool for sealing; when installing the fire door, attention should be paid to whether it has good airtightness; many installation engineering teams have been cutting corners during the installation. This behavior is resolutely eliminated, and the user is best to personally check it during installation; do not make your own door frame, but should purchase a regular fire door leaf for installation. In fact, in the life of the fire door, the use specification is the most important. It not only affects the normal function of the fire door, but also affects the service life of the fire door. black aluminum windows uk small french exterior doors vinyl vs fiberglass vs aluminum windows full glass storm door storm door repair near me