Diagonal Tie Wires

Diagonal ties are used as a bracing on the lower level of side rail runs. The tie wire is fixed on the lower side rail using a bottom tie brace bracket, which itself is fixed underneath the vertical strut. The tie wire is then fixed to the bottom of the upper side rail with a top tie brace bracket. Tie brace brackets are available in single or double configurations

  Diagram showing bottom connection of diagonal tie wire   Diagram showing top connection of diagonal tie wire 

  Diagram showing arrangement of diagonal tie wires   Image showing top fixing of tie wire to cleat

Image showing bottom fixing of tie wire



Used to stabilise Z-purlins, anti-sag rods and apex ties are an essential component of the roofing support system. Without these, Z-purlins with the force of weight they hold would give way and bend. The support that is offered by these two components effectively minimises the horizontal movement of the Z-purlins over the lifespan of the roofing system.


   Diagram showing arrangement of apex ties and anti-sag rods fixed to Z-purlinsDiagram of anti-sag rod connector

We provide quick fitting connectors on our anti-sag rods which fit into place easily and securely.


Use this calculation to derive the length anti-sag rods required;

A = Purlin centres (A),   B = Sag Rod hole centres (B)

A + B = C

VC = Rod length between purlins

VC + 64mm = Production length


Anti-sag Rod showing connector

Vertical Struts

We have a range of vertical struts to suit different situations. The overall length of the strut will depend upon the centres of the side rails. Brackets are held in stock for different section sizes of side rails.


 Diagram showing double support arrangement of struts and diagonal tie wires  Diagram showing single arrangement of struts and diagonal tie wires


Rafter Stays

Diagram showing arrangement of rafter stays to C-sections, sleeve and rafterRafter stays are utilised (as per the diagram) to provide the support system with more rigidity. Rafter stays are fixed to the bottom sides of the C-section sleeve and then to a cleat on the main hot rolled rafter. We have a range of sizes available in stock, as well as manufacturing to custom specification.




A large range of fixings are stocked for use with our profiled steel cladding and cold rolled products. Fixings are normally positioned in every other support across the width of a profiled sheet. In exposed conditions, extra fixings would be used.

Follow the below recommendations to maximise stability and minimise cost. Please note that these recommendations do not apply to all situations, if in any doubt or in need of assistance, contact our sales department

  • Side laps are stitched at 450mm centres and end laps at 150mm.

  • If the roof pitch is less than 15 degrees, the end lap stitching could be increased to 200mm.

  • If the roof pitch falls between 7 and 4 degrees it is recommended to use sealants on both sides and lap ends.

The range of Hayes Cladding fixings

 a -  ASF 17/G19 25mm steel  j -   Pop Rivet
 b -  ASF 35mm to heavy duty steel  m - 62mm timber screw
 c -  ASF 65mm stand off to steel  n -  50mm timber screw
 d -  ASF 75mm stand off to steel  o -  38mm timber screw
 e -  ASF 82mm stand off to steel  p -  25mm timber screw
 g -  Spring head nail  q -  MS19 tacking screw
 h -  ASF 33 65mm to heavy duty steel  r -  Coloured screw cap (various)
 i -  Self sealing pop rivet  s -  MS202 screw
Sealants & Foam Fillers

A wide range of specialised tapes and sealants are available on request. The sales department will be able to advise on your specific situation.

A range of durable, deterioration resistant vapour barriers are available, reducing the degree of condensation and eradicating the risk of water ingress. Foam fillers are manufactured to suit all our profiles, are formed in both long and short flutes and are used to reduce draughts and vermin entry.

NOTE: The use of our fillers is recommended to ensure a snug fit to Hayes' range of profiles.


Image showing sealers, fillers and tapes

 t - Foam Fillers
u - Mastic Sealant
 v - Butyl Adhesive Tapes



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