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.

To acheive the best lifespan and preserve strength of the wood joists, 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.

Joist Hangers

There are two main types of Joist Hanger applications

Timber to Timber
Timber to Masonry

The term Joist Hanger has a wide variety of uses. From a standard Jiffy hanger for light to medium applications to a Heavy Universal hanger to take multiple timbers.

Standard Jiffy Hanger or Cullen KH Hanger (Light Loads)

Standard Jiffy joist hanger, or the Cullen KH hanger, are mostly used for light duty applications such as flat roof joists, floor joist trimming, trimming for roof light windows and floor joist with light loadings.

Long Leg Jiffy Hanger (Heavy Loads)

For floor joists we would recommend a Long Leg jiffy joist hanger. The Cullen KHL or a Maxi Hanger (MH) hanger.
These hangers are used in timber to timber applications due to them having a greater load capacity.

Masonry Hanger Cullen JHI Hanger

A masonry hanger or Cullen JHI Hanger are prodiminently 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.

Universal Joist Hanger (UH Hanger)

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 is designed to do the job of the FFI, TFI, U and LUI combined.

Loft Conversion Floor Joists Cullen KHL Hanger

For loft conversion floor joists, we reccommend the Cullen KHL hanger, which can be wrapped over steel beams or trimmers for maximum strength. We would always advise using galvanised twist nails to fix hangers and all nail holes should be fixed with either a 30mm, 35mm or a 40mm nail.
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]

Paslode PPN Nails

Rawl Plug PPN Nails

Cullen have a huge range of hangers and we can supply you with a hanger to suit your requirements whether it be to fix light weight decking, loft conversion, masonry built extension or timber frame construction. We are confident that we will have the hanger that you to suit your requirements.

At SEC Supplies & Fixings Ltd, we always have the vast majority of Cullen Products in stock and available for collection or next day delivery to UK mainland postcodes. If not in stock we can order direct from Cullen, also with next day delivery. Some specialist and bespoke hangers can be ordered and will require a minimum of 2 week production time, but please contact us if you have any specialist requirements.

If you need any advice, please feel free to contact us.

Tel: 01634 786766

emails: sales@secfixings.co.uk

Unit 13, Sabre Court

Valentine Close

Gillingham Business Park

Kent

ME8 0RW