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Best Adhesive

What is the Best Adhesive 2024? Strongest Bond

Adiseal adhesive has been proven to be the best adhesive in an independent adhesive strength test conducted by Ultimate Handyman. Adiseal emerged as the strongest product, exceeding the nearest competitor by over three times. It was even too strong for the screws of the test rig. In addition to its exceptional strong adhesive bond strength, Adiseal provides a waterproof, flexible, and UV-resistant bond.

Best adhesive sealant in test

Best Adhesive Strength Test

In an independent evaluation of adhesive strength, Ultimate Handyman employed rigorous testing methods to ascertain the best adhesive. Each product was applied between wood and metal surfaces, allowing it to cure before subjecting it to pressure via a hydraulic ram to determine its breaking point.

Adiseal clearly emerged as the strongest adhesive, surpassing the strength of its closest competitor by more than three times. Adiseal was so strong that the screws of the test rig started to rip out before the bond could break forcing the test on it to be abandoned.

Best adhesive proven by an independent test.

Test results

During the bond strength examination between hardwood and metal, Adiseal demonstrated remarkable resilience, enduring a substantial pressure exceeding 3123+ psi. In stark contrast, all other product bonds faltered under pressures of 1115 psi or less. The graphic representation below shows Adiseal’s outstanding performance in the adhesive strength test, proving it’s the best adhesive.

strongest adhesive strength test results chart

Best adhesive verification

Some manufacturers make unsubstantiated claims about their products, such as being “360% stronger” than others. While they may assert to be the best adhesive, only one product can genuinely hold that title. To ascertain the best product, it’s crucial to rely on independent testing rather than manufacturer marketing claims.

Adiseal’s outstanding performance in these unbiased trials attests to its superior quality and engineering. Its formula seamlessly combines high-strength bonding with remarkable endurance, resulting in bonds that are not only long-lasting but also incredibly resilient.

Best adhesive strength test by Ultimate Handyman

Best adhesive strength test results table

ProductMax pressure when adhesive bond broke (psi)
Adiseal3123 + psi
SupaBond1115 psi
Tec 71016 psi
HB42942 psi
Loctite PL Premium873 psi
Gorilla Grab Adhesive862 psi
Bond It PU18582 psi
Bond It Save Nails411 psi
Best adhesive strength test results.

“That is actually unbelievable!”

Ultimate Handyman


Testimonials & some comments on the: Grab adhesive tests 2017, video on YouTube

  • That Adiseal is phenomenal!
  • That Adiseal is some stuff though, definitely need to get some of that bought!
  • I instantly went looking for Adiseal!
  • Need to get my hands on some of that to try out.
  • Looks like a cracking product.
  • Having used the two most expensive brands on numerous occasions, I’ll be trying out the others, especially the Adiseal.
  • Adiseal certainly surprised me in this test!
  • Fantastic tests. It’s unbelievable that Adiseal test with the hardwood.

Other adhesives not in this test

Over the years, Ultimate Handyman has meticulously conducted a series of independent tests, diligently cataloging the outcomes on the Ultimate Handyman YouTube channel. These exhaustive assessments have encompassed a broad spectrum of products, encompassing the older formula of Adiseal, in addition to other prominent brands such as Soudal, Geocel, and C-Tec.

Adiseal vs CT1: Which is the best adhesive?

Manufacturers often tout their product as superior, but it’s imperative to scrutinize these assertions beyond marketing hype. Some manufacturers assert their product’s exceptional strength without evidence to support such claims. In contrast, we prefer to validate our statements by demonstrating how Adiseal surpasses CT1 adhesive and sealant. We invite you to observe the concrete advantages of Adiseal over CT1, allowing the outcomes to articulate the case for an informed decision grounded in practical comparisons.

  • Adiseal adhesive has stronger grab than CT1 adhesive.
  • Adiseal sealant has stronger mould resistance than CT1 sealant.
  • Clear Adiseal sealant stays clear in water whereas CT1 clear sealant turns white in water.
  • Adiseal has been shown to be the strongest adhesive in an independent adhesive strength test.
  • As well as Adiseal being better than CT1 in numerous ways, Adiseal is also lower priced than CT1.

Proof of claims

Adiseal excels in both performance and affordability when compared to C-Tec CT1 and BT1 sealant. To access detailed test results showcasing Adiseal’s superiority, please email us.

To demonstrate our confidence in Adiseal’s quality over CT1 sealant adhesive, we’re providing a complimentary tube of Adiseal White 290ml to UK tradespeople. This allows you to personally verify Adiseal’s exceptional performance. More details can be found on our offer page.

We believe in personal testing as the most reliable way to confirm Adiseal’s superiority, going beyond manufacturers’ marketing claims.

Is CT1 actually 360% stronger?

Manufacturers often make extravagant claims about their products, boasting of being “360% stronger” than competitors. It’s essential to critically evaluate such bold assertions, which often lack solid evidence and are primarily marketing hype.

In a previous independent test by Ultimate Handyman, the old CT1 and Adiseal formulations were compared in a metal-to-metal strength test. The results revealed that the old Adiseal formula outperformed the old CT1, with Adiseal breaking at 201 psi, while CT1 failed at 148 psi. The new Adiseal formula demonstrated even greater strength, breaking at 245 psi in the same test. Adiseal also excelled in a wood-to-metal test, achieving an impressive 3123+ psi without breaking. These results firmly establish Adiseal as the best product, validated by independent testing, while the manufacturer’s claim about CT1 being “360% stronger” lacks substantial evidence.

Additionally, Adiseal Ultra Clear surpasses CT1 clear sealant in clarity, particularly in retaining transparency in water. If you require concrete test results as evidence, please feel free to contact us.

Why invest more in a brand that doesn’t live up to its performance claims when you can choose Adiseal? Distinguish between marketing hype and empirical facts to make an informed decision based on proven results.

Adiseal vs Gorilla Grab Adhesive

In rigorous tests conducted by Ultimate Handyman, Gorilla Grab Adhesive, from the makers of Gorilla Glue, was compared to Adiseal in various strength assessments.

In the metal-to-metal test, Gorilla Grab broke at 166 psi, while Adiseal outperformed it, breaking at 245 psi. Adiseal also displayed superior strength in an independent test.

In the wood-to-metal test, significant differences emerged. Gorilla Grab Adhesive broke at 862 psi, whereas Adiseal excelled, reaching an impressive 3123 psi without breaking. This independent test confirms Adiseal’s vastly superior strength.

Adiseal consistently demonstrated its superior strength in both metal-to-metal and wood-to-metal tests, establishing it as the ultimate choice and unmatched performance.

Adiseal vs Tec 7 sealant and adhesive

In a comprehensive assessment by Ultimate Handyman, Tec 7 Sealant and Adiseal were rigorously tested.

In the metal-to-metal bond strength test, Tec 7 broke at 165 psi, while Adiseal outperformed, breaking at 245 psi, establishing Adiseal as the stronger adhesive in this independent test.

In the wood-to-metal adhesive strength test, Tec 7 broke at 1016 psi, but Adiseal excelled, surpassing 3123 psi without breaking, further confirming Adiseal’s significant superiority.

Adiseal consistently proved its strength in both metal-to-metal and wood-to-metal tests, making it the preferred choice for exceptional bonding and performance over Tec 7 in independent testing.

Adiseal vs HB42 sealant and adhesive

Ultimate Handyman’s strength test conclusively proves Adiseal’s superiority over HB42 sealant and adhesive. Adiseal outperformed in both metal-to-metal and wood-to-metal strength tests. In the metal-to-metal test, Adiseal broke at 245 psi, surpassing HB42, which broke at 184 psi. Similarly, in the wood-to-metal test, Adiseal’s exceptional strength was evident, reaching an impressive 3123 psi without breaking, while HB42 broke at 942 psi. Independent test results firmly establish Adiseal as significantly superior to HB42.

Adiseal vs Loctite PL Premium

In the bond strength test by Ultimate Handyman, PL Premium from Loctite was assessed against other products. The results showed Adiseal’s superiority in both metal-to-metal and wood-to-metal tests. In the metal-to-metal test, PL Premium broke at 202 psi, while Adiseal broke at a higher level of 245 psi, demonstrating superior strength. In the wood-to-metal test, PL Premium broke at 873 psi, whereas Adiseal excelled by reaching an impressive 3123 psi without breaking. These results clearly establish Adiseal as significantly stronger than PL Premium from Loctite.

Metal to metal adhesive strength test: Adiseal Best Adhesive Again

In the metal-to-metal strength test by Ultimate Handyman, Adiseal maintained its unmatched strength, firmly establishing itself as the indisputably strongest adhesive. Its consistent exceptional performance makes Adiseal the ultimate choice adhesive, surpassing competitors significantly.

Adiseal will successfully stick the following items:

Sticking item to concrete block including plastic, metal, wood

Different items stuck to a concrete block with Adiseal best adhesive.

Benefits of Adiseal

Other benefits of Adiseal include:


Adiseal is available in the following colours:

Strongest adhesive & sealant in independent test.

Data Sheets

Where to buy strongest adhesive

In the UK, to buy the best adhesive, please contact us for details of your local stockist. To buy Adiseal products in the USA, Canada, France, Australia or any other country, visit https://guglue.com/ who can post to other countries.

Frequently asked questions about best adhesive

What is the best adhesive?

Adiseal has been shown to be the strongest adhesive in an independent adhesive strength test. It finished over 3 times stronger than the next best product and was even too strong for the screws of the test rig.

Which product is better, Adiseal or CT1 adhesive and sealant?

The better product is Adiseal. It has proved to be the strongest adhesive in an independent test. To find out specific details of how Adiseal is better than CT1, please send us an email.

What is the strongest & best adhesive available in the market?

Adiseal is widely regarded as the strongest adhesive currently available. It proved to be the strongest product in an independent test.

What is the best adhesive for outdoor projects?

Adiseal is a weatherproof adhesive that provides a high-strength adhesive bond. It is also waterproof, UV resistant & flexible.

Suhail Matadar has extensive experience in the construction industry as an electrician, involved in installing, inspecting, and testing electrical systems in various projects. He excelled in sales, working for a major UK wholesaler, selling construction products to professionals and the DIY market. Suhail's background includes working at a leading home emergency repair company dealing with trades people. With a BEng (Hons) degree in Electronic Engineering, Suhail has worked with PLCs in the nuclear fuel manufacturing industry. During his studies, he gained practical experience at a chemical manufacturing company known for producing award-winning cleaning, hygiene, and livestock protection products for over a century. Currently, Suhail runs a global business specialising in supplying, researching, testing, and distributing chemical construction products like adhesives and sealants.