Sikaflex 291 Marine Adhesive - Top Tips and Product Demo

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.

[@tometheus9315]

Would this be suitable for a motorhome roof ? I purchased the sikaflex 522 although debating to use this now? Thank you

[@sayyestonewvanventures]

Thank you for this Handy video ❤

[@brettmcmurchy130]

hi, I'm thinking if put some sealing tape over the sikaflex to reduce UV exposure it should increase its life span significantly, right?

[@jamesvaughn2973]

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?

[@redbeardmuaythai6968]

What's the average cure time. Its on a panel on my camper van outside. Its end of January. So arounf 5 to 10 degrees Celsius.

[@bbhuchuk]

Will it bond aluminum together

[@geronimopascuale9208]

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

[@arnehayn4354]

Is there a difference between 291 and 291i?

[@anneogilvie6657]

Is this goof for fixing a spa filter that has come apart?

[@stevegillman1999]

Hi. Thanks for the video. Is Sika 291 i available in brown? I'm having great difficulty in locating any.

[@richardkirkwood9354]

What is the shelf life of unopened products, various configurations?

[@allanmartin634]

Hi do you recommend 291 for skin fittings, I guess with 208 cleaner and 205 primer?

[@gearhed78]

Seeing my comfortable retirement in the amount of full Sika boxes in the background. When are you guys closed and nobody is in that building? lol

[@pogo30pago]

What a great video!

[@SamOnABikeSweden]

Is this usable to mount solar panels on a caravan? Or is Sikaflex 252 better?

[@marineindustrial4334]

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

[@coskunbahceci]

@@marineindustrial4334 Sikaflex 291 or Sikaflex 252 ? Which one is usable solar panel?

[@marineindustrial4334]

@@coskunbahceci both would work perfect well

[@patrioticjaustralia4679]

Will it adhere to HDPE?

[@xaf43]

Can It use for small fissure on a tire?

[@xaf43]

No?

[@jeanmitchell8949]

can you paint over it

[@SNEVIC]

Hi Sir, do you advise this product to bond fiberglass with rubber?

[@marineindustrial4334]

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.

[@steveandnaz]

What is the difference between 221 and this 291? Thanks!

[@marineindustrial4334]

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]

@@marineindustrial4334 Thank you. 291 is different from 291i right?

[@marineindustrial4334]

@@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

[@ChasingRiver]

@@marineindustrial4334 Very interesting. Thanks.! I wish they would sell 291i in other countries

[@marineindustrial4334]

@@ChasingRiver where are you based?

[@kenniffss]

Does sika have an adhesive that will bond a 3mm sheet of hdpe to a Plywood backing? Sheet is 1200x600mm.

[@patrioticjaustralia4679]

Did you find a product?

[@kenniffss]

@Patrioticj australia not for a reasonable price no. Ended up using a 3M industrial double sided tape.

[@rxonmymind8362]

Will this work on Hypalon boats?

[@marineindustrial4334]

Ideally you would want to use a contact adhesive like Bostik 2402 for hypalon

[@user-bl1eh2qs9o]

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

[@RogerFrigola]

They got the maths wrong: 1.8 MPa is about 18 kg/cm2

[@marineindustrial4334]

You beat me to it!

[@aaronowens1026]

How heat resistant is this

[@marineindustrial4334]

Service temperature range is -50 to 90 degrees C. You can go up to 120 degrees C for up to 4hrs or 140 degrees C for 1hr

[@skipper1350]

Compatible with aluminium?

[@cosmicbrah8669]

yup

[@marineindustrial4334]

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

[@FrancoUngarelli]

Non si può parlare in italiano?grazie

[@cintulator1129]

Sika is a 🐖 in Finnish

[@danieltseperis-edokaitora1657]

Is this sealant UV resistant? Can it be used on the deck exposed to the sun?

[@marineindustrial4334]

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