Question 1

What are restraint straps used for?

Accepted Answer

Restraint straps tie floors, walls, and roof elements together. They stop lateral movement and provide stability where timber meets masonry, as set out in building regulations.

Question 2

Can I retrofit restraint straps without removing brickwork?

Accepted Answer

Yes. If a strap protrudes from the wall and is in good condition, you can splice a new strap end-to-end with bolts, then fix it across at least three joists to restore lateral restraint.

Question 3

Do straps need to align with truss node points?

Accepted Answer

No. Building regulations require lateral restraint straps at maximum 2 m centres, regardless of truss node alignment. They must span three rafters or joists and hook over a full masonry block.

Question 4

What materials are restraint straps made from?

Accepted Answer

Most modern straps are made from galvanised steel. This gives corrosion resistance and strength suitable for long-term use in roof, wall, and floor junctions.

Restraint straps

Simpson Strong-tie Heavy Engineered Restraint Strap 600 Mm

Simpson Strong-tie Light Engineered Restraint Strap 600 Mm

Simpson Strong Tie FB20 Multi Purpose Strap Banding 10m x 20mm

Heavy Duty Flat Strap 1000mm

Sabrefix 600mm Light Duty Bent Restraint Strap - Pack of 20

Sabrefix 1200mm Light Duty Bent Restraint Strap - Pack of 20

Sabrefix 600mm Heavy Duty Bent Restraint Strap - Pack of 10

Sabrefix 1000mm Heavy Duty Bent Restraint Strap - Pack of 10

Sabrefix 1200mm Heavy Duty Bent Restraint Strap - Pack of 10

Sabrefix 1500mm Heavy Duty Bent Restraint Strap - Pack of 10

Sabrefix 1000mm Light Duty Bent Restraint Strap - Pack of 20

Simpson Strong-tie Heavy Engineered Restraint Strap 1500 Mm

Simpson Strong-tie Heavy Engineered Restraint Strap 1200 Mm

Simpson Heavy Engineered Strap Bend 100mm 1000mm

1000mm Speed Pro Heavy Duty Restraint Strap Bent At 150mm Galvanised 1000mm 4mm X 27.5mm

1400mm Speed Pro Heavy Duty Flat Restraint Strap Galvanised 4mm X 27.5mm

Simpson Strong-tie Strap Bent (at 100mm) 5 X 1200mm

Simpson H6T10 5mm Twist Restraint Strap 30 X 600mm