Here we're taking a look at Sikaflex 291 Marine Adhesive, pack sizes available in the UK and looking at some tips for how best to use and store the product.
Yes, I was wondering about the best caulking that you can think of for an aluminum boat, but the caulking will be done for about that will be going underwater where the caulking is and I would need to be able to paint over the caulking, preferably white what are your thoughts please?
What is the setting time for the Sika 291 Lot and it can be tool as the Sika 1A? also. What is the diference between the Sika 291 Lot and Sika 1A? Cheers
Sorry for the late reply!! Yea this would be great for that sort of application, good surface prep though and pre-treatment using Sika Aktivator 205 for best results
All these PU adhesives are organic and as such will degrade after prolonged exposure to UV. Generally their tolerance can be measured in multiples of years service life making them suitable for outdoor applications
Generally speaking, yes. However… there are countless types of rubber on the market, for any critical applications we would always recommend testing first. If you have a big application Sika can always run tests and recommend any pretreatment requirements.
In my opinion, 18 tons per m2 is very weak. 18000 kg : 10000 cm2 is only 1.8 kg per cm2. High Tack from "Den Braven" has a tensile strength from 22 kg per cm2
They’re similar products for different industries. The 291 is prt of the I-cure family making it more friendly towards DIY as the VOC’s are lower than say 221. Also 291 has been tested for use within maritime construction and as such carries the wheel mark accreditation.
@@ChasingRiver sorry should have been more clear 🙈 291 was phased out in the UK around 5 years ago in favour of 291i, it was due to changes in legislation not allowing the old formulation to be sold in the DIY market without a pair of gloves. SIKA deemed this wasn’t a very practical solution so decided to reformulate and reduce the VOC content
Absolutely, but remember aluminium oxidises almost as soon as it comes into contact with atmosphere so a good scratch up using 3M Scotch Brite then clean with SIKA Aktivator 205 and stick your components down straight away
