What’s the big fuss about Siegelbond M35?
Siegelbond M35 – we launched to our customers in 2024, a multi-purpose, sealant and adhesive in one MS Polymer. But how does it compare though against our popular polyurethanes range? (We carry Sikaflex PRO, Sikaflex 11FC & FulaFlex 550).
There’s a lot of features and benefits with each type of glue/sealant, we won’t bore you with everything, we’ve just picked out some of the main requirements & put them head-to -head against each other:
*Note: 1 as lowest – 3 as highest in score
Features | Polyurethane (Sikaflex PRO(R)/Fula-Flex 550(R)) | Sikaflex 11FC® | Seigelbond M35 |
Adhesion Strength | 1 | 3 | 2 |
Flexibility/Joint Movement | 3 | 1 | 2 |
Weatherproofing/Sealing | 2 | 2 | 3 |
UV Resistance | 1 | 1 | 3 |
Fast Initial Grab Strength | 1 | 2 | 3 |
Fast Curing Time | 1 | 2 | 3 |
Safest VOC Levels | 1 | 1 | 3 |
Can Be Used Without A Primer |
|
| 3 |
Paintable | 3 | 3 | 3 |
Wide Variety Of Colours Available | 3 | 2 | 1 |
Versatility Of Applications | 1 | 2 | 3 |
Total Tick Scores | 17 | 19 | 29 |
Out of a perfect score total of 33 — the Siegelbond M35 gets a 29!
That doesn’t mean, however, that the other polyurethanes are inferior products though by any means:
For the strongest glue Sikaflex 11FC is still the winner
The most flexible joint sealant is the Sikaflex PRO/FulaFlex 550 category
Weatherproof sealing, low VOC levels & versatility goes to the Siegelbond M35
- The reason M35 scores so high is while fully cured Sikaflex 11FC is a little bit stronger, M35 is still very strong & will grab faster, cure faster & adhere to more materials
- Sikaflex PRO & FulaFlex are a little more flexible as a joint sealant However, M35 is still very flexible & perfectly suitable as a joint sealant whereas the 11FC is too ridged for vertical joints
- For outdoor, roofing, solar, window applications – M35 is the winner with its remarkable sealing properties & UV resistance
- In terms of safety, M35 has the lowest VOC making it again the clear winner in this regard
- No need for a primer, again the M35 shines as the polyurethanes are quite fussy about needing primers to work properly
- Versatility, again goes to the M35 – due to the fact that it’s either the very best for each application or at least suitable for every application whereas the others are for very specific purposes only
Polyurethanes are still excellent when used correctly. If you’ve had issues, it might have been the wrong application.
A major drawback of polyurethanes is their susceptibility to UV light, which shortens their lifespan compared to new hybrid MS polymers like M35.
For advice on your project, call us at 1300 938 645. We’ll help you choose the right product.
In short, M35 can handle almost any application!
