Masonry Joist Hangers

Timber to masonry joist hangers are designed to support timber joists, beams and trussed rafters from masonry walls, with a minimum crushing strength of 3.5N/mm. Masonry joist hangers are usually welded for strength. They are designed to be placed either on top of a wall, or wrapped around the wall or fixed into a joint in the wall. The return adds additional lateral support by wrapping around the back of the masonry.

There are two main types of masonry hangers; Timber to Masonry hanger and Timber to Masonry Return hanger.  

Timber to Masonry Joist Hangers

• Single piece joist hanger
• Welded masonry joist hanger

Lock Plate

An additional element to use with the Single Piece Joist Hanger and the Welded Masonry Joist Hanger (above). This plate is easily be transformed into a hook over joist hanger. No special tools or rivets are required. Just insert Lock Plate at 90, rotate and tap into place.

Fixing Instructions

• The back plate of the hanger should lie flat against the vertical masonry support.
• The masonry flange should never be placed in dry slots.
• Masonry flange should have a minimum of 3 courses (675mm masonry) above.
• Use correct strength mortar as per British Standard.
• Both supporting and above masonry should be allowed to mature before any load is applied.
• Joist should be square cut and sit tight to the back of the hanger - maximum gap permitted is 6mm.
• Nail the side flanges with 30 x 3.75mm galvanised square twist nails or equivalent.
• To provide lateral restraint HD Straps should be used.
• Use appropriate corrosion resistant fixings. 
• Do not use galvanised fixings with stainless steel products or vice versa.
• The Lock Plate (shown above) can be used, where you want to create a hook over the wall.
• Just insert Lock Plate at 90, rotate and tap into place.

Timber to Masonry Return Joist Hangers

• Welded masonry return joist hanger
• Masonry joist hanger with back plate

The Masonry Return Joist Hangers are designed for similar applications and installation as the standard Masonry Joist Hangers. The return adds additional lateral support by wrapping around the back of the masonry or timber. They have a 25mm drop on the return flange as standard.

Welded masonry return joist hanger

The welded masonry return joist hanger has 100mm return and 25mm drop as standard. They are made from 2.4mm thick pre-galvanised steel EN 10346 DX51D Z275. Also available in stainless steel.

Fixing Instructions

• The back plate of the hanger should lie flat against the wall.
• The return would be placed to hook over the wall.
• Masonry flange should have a minimum of 3 courses (675mm masonry) above.
• Use correct strength mortar as per British Standard.
• The masonry should be allowed to mature before the joist is fixed to it.
• Joist should be square cut and sit tight to the back of the hanger - maximum gap permitted is 6mm.
• Nail the side flanges with 30 x 3.75mm galvanised square twist nails or equivalent.
• To provide lateral restraint heavy duty straps should be used.
• The masonry flange should always be securely fixed or adequately embedded and should never be placed in dry slots.
• Always ensure that compatible corrosion resistant fixings are used, i.e. do not u se galvanised fixings with stainless steel products or vice versa. 
  

Masonry joist hanger with back plate

This hanger has a removable return. This return come in five standard sizes, 100mm, 115mm, 140mm, 150mm and 215mm. The drop is 25mm. 

Fixing Instructions