SIKAFLEX 522 vs Dow 785 White & Dow 785 Clear Sealant. Which is best for Strength and Bond.

This is a quick test to see how strong the "Sikaflex 522 Sealant" is when used on wood, painted metal, aluminium and stainless steel. I test it along side "Dow 785 Sealant White & Clear" which are used in plumbing and bathrooms.
The results are well worth seeing.
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[@zbrider360]

Hello Mark, cheers from Brisbane AU, thanks for your video and test on the sealants. Looking forward on your progress, Im interested to do a conversion my self but have not found a suitable Van as yet.

[@alanmay1945]

Hi Mark, this experiment is interesting and well done, but overridingly too limited in its purpose. Those sealants are not at all like for like, as those pure silicone ones are of no comparison whatsoever to the Sikaflex and meant for entirely different uses. The comparison experiment that you should instead do is Sikaflex compared to a known same type, the point being that Sikaflex is very expensive at 14pounds a tube, but an equivalent rival is only 7 a tube, ie Wickes Premium Hybrid Sealant Adhesive, 7pounds a tube, in white, black, grey and clear. But are they as good as the Sikaflex? So, if you purchase the Wickes, in white, then this experiment would be very useful indeed, saving a big amount of money if found that Sikaflex could be substituted for the half price equivalent, in this case Wickes Hybrid. Both are Hybrid Polymer types (nothing to do with Silicone at all), and are Adhesive Sealants, for bonding. The Silicone will not bond. So, Mark, your experiment is a good one, very well carried out, but we must use the correct type. I would love to see this same experiment with Wickes Premium Hybrid vs Sikaflex. On spec, they are the same product, but are they in practise? what do you think about doing this? I like your channel, yourself and what you're doing and have subscribed. Best wishes, Alan in Norfolk.