Box profile sheets are always fixed with a tech fasteners in the valley trough part of the sheet directly into the purlin underneath.
How to fix box profile roofing sheets.
The lower end of the sheet can be fixed through every trough to ensure the wind does not uplift the steel sheeting.
These screws are purpose made fittings for these sheets and are drilled in with an 8mm socket driver fitted in the chuck of your electric drill.
Installing the sheets is simple to do using cladco screws for installing box profile 34 1000 the recommended installation is through troughs 1 3 4 and 6.
To fix the sheets each 34 1000 box profile sheet has 6 troughs for securing we recommend you fix the sheet into trough 1 3 4 and 6.
Fix roofing sheets nail or drill each sheet into the purlins or decking beneath at every point at which the sheet overlaps and at the top and bottom of the slopes.
Box profile sheet fixings trapezoidal or box profiled sheets should be fixed through every valley pan lowest point of the profile at every purlin with extra fixings being used at the ridge and eaves profiles for added strength.
Colour caps are used to cover the ends of fixings this allows the fixing to blend into the sheets colour.