Can I have lift off hinges on a fire door?
No. The maximum clearance between the head of the door and the frame rebate is 3mm. For a lift off hinge to work you need a clearance equal to the throw of the lift off hinge which is generally 10mm. This clearance is created by shortening the length of the door so there is a 10mm gap between the head of the door and the frame rebate and as such far exceeds the maximum allowable clearance for a fire door being 3mm.
Can I use stud clips as a fixing method for fire rated frames?
For TVC Core fire doors, stud clips are not a tested and approved fixing method. If you require a fire rated frame in a plaster board wall we would recommend a welded stud strap frame, a partition frame or a new gen frame profile which also provides a more secure connection between the frame and the wall.
What are Surefab Metal Door Frames made of?
We manufacture all our frames from Zincanneal. The material gauges we offer are 1.1mm, 1.4mm and 1.9mm. We are also able to provide Galvabond or Stainless Steel frames upon request.
What is a “Mullion”?
A mullion is a section of frame running vertically from the bottom to the top of the frame and creates the provision for two doors within a single frame where both doors can be hinged and latched separately.
What is a “Four sided frame”?
A standard frame has three sides being the lock side, hinge side and the head. A four sided frame has a frame section welded to the bottom of the frame (same as the head). These are generally seen in areas such as service area’s, or as an access panel, and are not normally used in high traffic areas.
What is a “Transom”?
A transom is a section of frame running horizontally from one side to the other which creates a separate opening within the frame. Usually this involves a standard hinged door being installed in the bottom part of the frame, with a fixed panel above.
What is the difference between countersunk holes and tube fixing?
Countersunk holes are just that, a countersunk provision in the face of the frame (generally in the centre of the stop section). Tube fixing is exactly the same as countersunk fixing except that a steel tube is welded to the back of the countersunk which provides a barrier if the frames are to be backfilled, by preventing mortar running out of the countersunk hole. The other advantage of tube fixing is that the tube in essence provides a physical stop preventing the dyna fixing to be over tightened which can distort the frame.
What is your standard lead time on frames?
Our lead time on frames varies, but normally sits between 5-12 working days. To save disappointment, it is recommended that you confirm the lead time when placing your order for a more accurate idea of the current lead time.
Do you provide installation of door frames?
No, our core business is manufacturing. We focus on supplying you with the best quality product and technical assistance. Therefore, installation is not an area we work with.
Can I order a pre-backfilled door frame?
As per the Australian standards, all fire rated frames need to be backfilled. At the current point in time we are unable to pre-back fill our door frames for a couple of reasons. Firstly, backfilling the door frame makes it substantially heavier, which becomes an issue with transportation. Secondly, when the frames are transported, the backfill tends to crack up. Unloading on site is also challenging. For now, the best solution is to back fill them in situ, or as close to the installation site as possible. Click here for more info on backfilling.
If there is a question you have that is not answered above, please contact us.