By design some metal roofs must be installed over battens some must never be installed over battens and some can be installed over battens or solid decking.
Fixing metal roof battens.
For example elevated battens are standard wood battens that have a block of plastic in some cases wood attached to the underside to elevate.
Available in mto lengths.
Roofing battens batten to timber fixing.
According to bs 5534 the nails used to fix battens to rafters should usually have a diameter of at least 3 35mm.
Repair of sheet metal roofs in cyclonic areas 7.
Metal roof battens may also be used with steel or timber support framing.
Stramit roof and ceiling battens are not recommended for use in enclosed areas within 450mm of moist soil.
Fasten the batten to every truss or rafter with a 10x16mm hex head self drilling screw minimum fixing size through each flange as shown below.
Batten to steel fixing.
There are several things to consider when determining whether or not to have your new metal roof installed over battens.
Fix the battens into place.
Types of roof batten systems.
Fixing to timber and light metal zips zips are the recommended solution for softwood timbers and light weight metal battens up to 1 5mm thick.
Metal roof battens offer extraordinary strength to weight values and are lighter than timber battens.
Metroll roof battens are an effective alternative to timber battens or purlins.
2 from details sheet 1 determine an appropriate connection with strength equal to or greater than the uplift force determined from table 1.
Metal roof battens have been in use in australia for around 40 years.
Metalcraft roofing s ceiling batten system is easy to install and manufactured using 0 55 bmt g550 high tensile z275 galvanised steel from new zealand steel.
Fasten the batten to every truss or rafter with a 12x40mm timber fixing screw minimum fixing size through each flange as shown below.
Stramit roof and ceiling battens will give excellent durability in most applications.
Cyclonic roof batten 0 75mm bmt g550 40mm high.
When you re ready to secure the battens to the rafters the first step is to ensure you re using the right nails.
Roofing cladding steel frame housing general fasteners rivets and tool accessories.
Roof battens 1 from table 1 determine the uplift force on the batten to rafter or truss connection.
While roof battens are most commonly made of metal or wood they can be made of other materials like plastic or composite there are several different types of batten some combine two materials to get the needed affect.
Metroll roof battens may vary slightly between branches.
Metal roof battens may be used with steel or tile cladding.
In exposed conditions unwashed areas subject to salt laden air or other corrosive matter may need additional protection.
