SAFETY LADDER STOPPERS

The Stopper is a top quality aluminium T piece bonded into an 11mm vulcanised rubber base complete with a 2mm tread top and bottom designed for extra grip even in the wet. In fact it is the same composition as that used for fork lift truck tyres, tough indeed!

The Tests
We gave the Stopper to Leeds Polytechnic to test on various surfaces and at various angles. These included wet and dry floors, even painted concrete sprinkled with fine sand, using a ladder with wheels attached to the upper end to minimise the friction. After exhaustive tests, Leeds Polytechnic felt able to give the following conclusion.

The Conclusions

The Rojak Ladder stopper may be expected to improve the performance of a ladder in terms of safety by imparting complete stability under normal conditions of use

The stopper may be expected to improve considerably the limits of stability of a ladder well beyond that required for normal use

The stopper is regarded as being stable at inclinations of 3/1 and above even with loose dry surfaces

The stopper may be expected to provide added security in that when used at the limit, loss of stability is gradual (slip-stick) rather than catastrophic (Total). This enables the user to make a careful descent without further slip occuring.

The Stopper would be expected to be of great interest to safety officers as a means of improving the stability of ladders.

How and why does it work?
The ladder is kept in place by friction at it's point of contact, if this friction is overcome by the load on the ladder then it slips with hardly any warning - then it's too late (see above). In normal use of a ladder two very small areas come into contact with the ground and all the weight of the ladder and it's user is concentrated on these two points. This is why the rubber feet of a ladder wear away very quickly. With the Stopper, the weight of the ladder and it's user is spread over a larger area.