What are Joist Hangers ?
Joist hangers are used in construction and designed to anchor wooden beams or joists. Primarily used in roofs, decking, floors and ceilings for the purpose of creating a strong, long lasting support.
When installed correctly a Joist Hanger will preserve the wood joists to which they are attached, as over time the wood will naturally twist and move. Josit hangers ensure the wood beams keep a true fitting, ensuring long term strength and rigidity.
Most joist hangers slot over or under the edge of a wooden beam around three sides, and are attached with nails. There is a connecting plate on the joist hanger that is fastened to the surrounding frame. Therefore, Joist hangers are versatile and are much stronger than using traditional nails or screws alone. They are also easier to fit and relatively cheap given the length of time they will last. Provided all the holes have nails or screws inserted, they provide excellent stability. Joist hangers can also be welded if needed and can be attached to masonry as well as timber.
There are two main types of Joist Hanger applications
- Timber to Timber
- Timber to Masonry
These hangers are used in timber to timber applications due to them having a greater load capacity.
The masonry hanger or Cullen JHI Hangers are especially used in Timber to Masonry applications, and can be built into the wall during construction, or the wall or mortar joint can be cut out to install the masonry joist hangers. These are most used between walls where the building in of the timber joist is not possible or not acceptable due to air tightness requirements.
The Cullen Universal timber frame hangers aka UH Hangers The Cullen Universal Joist Hanger (UH), is a hanger used for any joist to joist or joist to trimmer application.
This hanger has been designed to do the job of the FFI, TFI, U and LUI combined.
Loft Conversion FloorJoists Cullen KHL Hanger
You can fix the hangers with twist nails with the conventional loose twist nails or use a PPN nail gun
Both Paslode and Rawlplug offer a PPN nail which is fired by a Positive Placement Nail Gun[PPN]
If you need any advice, please feel free to contact us.