It’s very alarming. Interesting that the guy reckons that van conversions are stronger than many coachbuilts. Wonder which manufacturer it was, though he did say that many of them are built the same (ie shoddily).
I fully muck out the trailer then lift up the rubber matting to air out the ali floor after every trip. It’s a bit of a pain, but it’s part of basic trailer care.
In the days when we did a lot of 7.5t conversions, it was incredible the shortcuts clients would have been happy for us to take to reduce the weight in the hope that they could get it stalled for 3 with masses of living We just refused to build them in the end, it was 2+living or 3+not a lot of living, and the boxes were built properly.
The launch of the "breadvan" horsebox when the driving license law changed has resulted in these shoddy and frankly dangerous things being on the road, and it's incredible that horse owners care more about a nice shiny little runabout than the potential harm they could cause to their horse. Bottom line is you won't get 2 horses in under the 3.5t unless you radically reduce the build quality.
I went to see a new lorry being built, at the time a very well known brand, and the build quality was appaling, lots of sharpe edges and gaps where things didn't meet properly. A lot do not have enough supports for the ply floor. GRP looks lovely but it has no real strength, but often they do not face with ply or put in extra cross members just to reduce the weight. Do not judge a horsebox by its paint job.
It was reposted by the company currently building my van conversion. It was interesting (and terrifying) to see the difference between all the extra reinforcement going into my van and the coach-built one on the video.
That's why I built ours. This is the basic structure of the sides before the internal walls are added. Made from aluminium sheet with I Beam sections, bolted top and bottom to steel frame. Light but very strong. Also very pricey to make.