Why removing swarf and protecting freshly cut metal are essential parts of a professional installation
This video records one of the installation standards I felt most strongly about. Drilling and cutting a van creates sharp metal swarf, and if that swarf is left sitting on painted panels, inside seams or trapped between the lock case and the door if the locks are not removed after the test fit, it can begin rusting and damage the van long after the installer has gone.
I had seen vans only a year or so old with rust pouring down doors after poor fleet installations. That is why compressed-air clean-down, brushing where appropriate and treating cut edges were not optional extras in our fitting process.
A deadlock can work perfectly and still be a bad installation if the installer has damaged the vehicle, left swarf behind or failed to protect the cut metal. The installation standard has to include the future condition of the van, not just whether the lock operates when the job is finished.
A deadlock can work perfectly and still be a bad installation if the installer has damaged the vehicle, left swarf behind or failed to protect the cut metal.
Here we show what effort we put into doing a quality installation, we go further than most would in order to keep the rust away from your van body work! Find out what's important in van lock fitting, car and attention, the clean down and rust protection. This is an installation on a MERCEDES SPRINTER VAN of LOCKS 4 VANS DEADLOCKS.
Visit http://www.sussexinstallations.co.uk/... if you would like deadlocks fitted and are in one of the following areas;
Sussex, Crawley, Brighton, London, Worthing, Kent, Horsham, Surrey, Haywards Heath
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Sussex Installations demonstrates the meticulous process of cleaning and rust-proofing after drilling holes for a van deadlock. By removing the lock mechanism after testing, all metal debris is cleared and treated with wax to prevent future corrosion.
This extract is from a genuine five-star Google review describing exactly this stage of the fitting process.
★★★★★"Really went the extra mile with cleaning, sealing and lubricating all the cut parts of the door before fitting the locks to prevent corrosion."
Edward Warrington · Google review, September 2026
Review wording has been lightly shortened for display without changing its meaning. Full reviews remain available on the Sussex Installations Google Business Profile.
It might look like a step backwards, but this is what I call the clean down, and I think it could be the most important part of the whole job. I open up the fixing holes and take the locks back out so I can properly clear away all the metal swarf that's collected from cutting and drilling, then wax and rust-protect everything before putting the locks back in with fresh grease.
Yes, and it's worth knowing before you assume the worst. I've seen vans with rust pouring down door panels where the real cause was rusty metalwork from a roof rack sitting above, dripping down and eating into the paintwork below. So rust you see on a door doesn't always start on that door.
Cutting and drilling are an essential part of fitting deadlocks, so there is a genuine risk if it's done carelessly. But it doesn't have to cost you your van in terms of rust. If the installer properly clears every bit of swarf and debris with air and a brush, then rust-protects the bare metal, a professional installation shouldn't leave your van any worse off years down the line.
Transcript source: the YouTube transcript supplied for this project with minor corrections. Automated transcripts can contain recognition errors and should be checked against the original video.