CT1 Sealant Adhesive
CT1 Sealant & Construction Adhesive: Find how Adiseal is Better
CT1 sealant adhesive is a good product but Adiseal adhesive sealant is better than CT1.
- 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.
It would be easy for us to say Adiseal is better than CT1 sealant adhesive, so we want to actually prove it to you with actual test results. Unlike some manufacturers who claim their products are 360% stronger without providing any proof of the claim, Adiseal can back up the claims. We say, don’t just listen to manufacturers marketing hype but follow actual test data.
CT1 sealant vs Adiseal sealant mould resistance test
As can be seen in the image, Adiseal sealant has stronger mould resistance than CT1 sealant. After being submerged in the same water for 24 days, CT1 sealant has discoloured below the water line due to mould growth whereas Adiseal sealant has remained mould free.
Mould resistance test procedure
Both products were applied to new clean plastics cups then filled half way with tap water. They were then both covered by plastic to make sure the cups were sealed. Both cups were kept next to each other in a dark location at room temperature (cool). This mould resistance test was started on 13/07/23. The image was taken on 06/08/23 after the water removed. The lot number of the CT1 sealant white was 3941754 which we were told by C-Tec was manufactured in February 2023. The batch number of the Adiseal sealant adhesive white was 3250560.
Verification of test result
These are our internal test results. We are confident in our claims and are willing to provide a free tube of Adiseal adhesive sealant to any tradesperson in the UK for their own testing. For more details on how to receive your free tube, please visit the offer page.
C-Tec also have another product called BT1 sealant but in a previous test in 2019, Adiseal was shown to have stronger mould resistance than BT1 sealant as well. Images of that test are available if required.
CT1 sealant clear vs Adiseal sealant clear test in water
As can be seen in the image, Adiseal is better than CT1 in the clear sealant test in water. CT1 sealant clear has turned white above and below the water line whereas Adiseal ultra clear sealant has remained clear. CT1 sealant turned more white where it was exposed to the water below the water line. Both products were kept in the same water for 24 days.
Clear sealant in water test procedure
Both products were applied to new clean plastics cups then filled with tap water half way. They were then both covered by plastic to make sure the cups were sealed. Both cups were kept next to each other in a dark location at room temperature (cool). This clear test in water was started on 13/07/23. The image was taken on 06/08/23 after the water was removed. The lot number of the CT1 sealant clear was 3843320 which we were told by C-Tec was manufactured in April 2023. The batch number of the Adiseal sealant ultra clear was 2253-0927.
Verification of test result
These are our internal test results. We are confident in our claims and are willing to provide a free tube of Adiseal adhesive sealant to any tradesperson in the UK for their own testing. For more details on how to receive your free tube, please visit the offer page.
Previous test
Interestingly when we carried out this test with a number of different clear sealants on a previous occasion on 5th May 2020, the CT1 clear sealant old formula performed better than the CT1 clear sealant new formula.
In the image above, the CT1 clear sealant old formula is the one on the far right whereas their new formula is the 2nd from the right. As can be seen in the image, the CT1 clear sealant new formula turned white both below and above the water line whereas the old formula of CT1 sealant clear only turned white below the water line.
CT1 adhesive vs Adiseal adhesive grab test
As can be seen in the image, Adiseal adhesive has stronger grab than CT1 adhesive.
Adhesive grab test procedure
The test was done by cleaning the black tile and 100g weights with a solvent cleaner. A small amount of CT1 adhesive & Adiseal adhesive was then applied to the tile surface. 100g weights were then pushed onto the adhesive thoroughly while the tile was flat on a table. The tile was then placed in a vertical position so that the weights would be pulled down with gravity.
This grab comparison test was done on 13/07/23. The lot number of the CT1 adhesive white was 3941754 which we were told by C-Tec was manufactured in February 2023. The batch number of the Adiseal sealant adhesive white was 3250560. Both cartridges were unopened before the test and only opened at the moment of the test. They were stored at room temperature and the test was conducted at room temperature.
With these type of products, as the adhesive inside the unopened cartridge ages, it becomes thicker which makes the grab of the adhesive increase over time. So that we were fair to the CT1 adhesive, we tested their adhesive that was 5 months old whereas Adiseal adhesive was only 1 month old giving CT1 adhesive an advantage. Even though CT1 adhesive was given an advantage, Adiseal adhesive showed it still had the stronger grab in this grab test.
Verfication of test
These are our internal test results. We are confident in our claims and are willing to provide a free tube of Adiseal adhesive sealant to any tradesperson in the UK for their own testing. Please visit the offer page for details on how to receive your free tube. Additionally, we have a video available that showcases the test between the CT1 grab adhesive and Adiseal adhesive.
Grab test on clear versions
We also tested the adhesive grab of CT1 adhesive clear and Adiseal adhesive ultra clear using the same test as above. We conducted the test numerous times to make sure we got the results correct. On testing the grab of the clear versions, Adiseal ultra clear adhesive showed it had the higher grab almost all of the time but there was 1 occasion when it didn’t. For this reason we only want to claim that the Adiseal adhesive colours (white, black, grey & brown) have stronger grab than CT1 adhesive colours, even though the Adiseal ultra clear adhesive performed better than CT1 clear in the grab test.
CT1 Power Grab n Bond adhesive (PGNB) vs Adiseal Hi-Grab adhesive
C-TEC has another CT1 grab adhesive with higher grab called CT1 Power Grab n Bond. Both CT1 Power Grab n Bond (PGNB) & Adiseal Hi-Grab are products with even higher instant grab adhesive.
It would be easy for us to say Adiseal Hi-Grab is better than CT1 Power Grab n Bond but to be fair to the CT1 Power Grab n Bond adhesive, we are not making any performance comparison claims with these 2 products. We think both of these products perform similar but Adiseal Hi-Grab adhesive is lower priced than CT1 Power Grab n Bond adhesive.
CT1 sealant adhesive vs Adiseal adhesive sealant price comparison
As well as Adiseal adhesive sealant being better than CT1 sealant adhesive in numerous ways, Adiseal products are also lower priced than CT1 products.
| CT1 product | Adiseal product |
| CT1 sealant adhesive white 290ml : £11.35 + VAT | Adiseal adhesive sealant white 290ml : £8.99 + VAT |
| CT1 sealant adhesive black 290ml : £11.35 + VAT | Adiseal adhesive sealant black 290ml : £8.99 + VAT |
| CT1 sealant adhesive grey 290ml : £11.25 + VAT | Adiseal adhesive sealant grey 290ml : £8.99 + VAT |
| CT1 sealant adhesive brown 290ml : £11.35 + VAT | Adiseal adhesive sealant grey 290ml : £8.99 + VAT |
| CT1 sealant adhesive clear 290ml : £12.35 + VAT | Adiseal adhesive sealant grey 290ml : £9.99 + VAT |
| CT1 Power Grab n Bond 290ml : £12.95 + VAT | Adiseal Hi-Grab 290ml : £9.69 + VAT |
These prices were taken from the CT1 official online shop shop.ct1.com and the Adiseal official online shop https://guglue.com on 05/10/23.
Why pay more for a product that doesn’t perform as well as Adiseal products.
Adhesive Strength Test
In an independent adhesive strength test conducted by Ultimate Handyman, Adiseal emerged as the strongest adhesive, displaying an impressive strength that was over three times greater than its closest competitor. Its exceptional performance was so robust that the screws securing the test rig began to tear out under the pressure of the hydraulic ram, forcing the test on Adiseal to be prematurely concluded.
Test results
When testing the bond strength between hardwood and metal, Adiseal withstood an astounding pressure of over 3123+ psi, while all other adhesives failed at 1115 psi or lower. The chart below highlights the superior performance of Adiseal in the adhesive strength test.
Strongest adhesive strength test results table
| Product | Max pressure when adhesive bond broke (psi) |
| Adiseal | 3123 + psi |
| SupaBond | 1115 psi |
| Tec 7 | 1016 psi |
| HB42 | 942 psi |
| Loctite PL Premium | 873 psi |
| Gorilla Grab Adhesive | 862 psi |
| Bond It PU18 | 582 psi |
| Bond It Save Nails | 411 psi |
“That is actually unbelievable!”
Testimonials
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.
CT1 adhesive vs Adiseal adhesive strength test
Although CT1 adhesive was not tested by Ultimate Handyman in the above adhesive strength test, he did test the old formula of both CT1 adhesive and Adiseal adhesive in a previous adhesive strength. In that test, the old formula of Adiseal adhesive was shown to be stronger than the old formula of CT1 adhesive.
In a previous independent adhesive strength test conducted by Ultimate Handyman, the test compared the old formulas of CT1 and Adiseal in a metal-to-metal adhesive strength test. The results showed that the old formula of CT1 broke at 148 psi, while the old formula of Adiseal broke at 201 psi. This test clearly demonstrated that even the old formula of Adiseal outperformed the old formula of CT1 in terms of bond strength. The new formula of Adiseal exhibited even greater strength, breaking at 245 psi in the metal-to-metal test. Furthermore, Adiseal achieved an astonishing 3123 + psi in the wood-to-metal test without breaking.
Is CT1 adhesive actually 360% stronger?
Some manufacturers often make exaggerated claims about their products, boasting about being “360% stronger”. However, it is important to question the validity of these bold assertions. Without supporting evidence, such claims can be dismissed as mere marketing hype.
Adiseal’s position as the strongest adhesive is proven by independent testing. In contrast, the claim of CT1 being “360% stronger” lacks any substantiating evidence from the manufacturer.
CT1 & Power Grab ‘n’ Bond are registered trademarks of CTEC (NI) Limited
Materials
Adiseal adhesive sealant will successfully stick the following items:
- Wood
- Glass
- Stone
- Ceramic
- Rubber
- Metal
- Synthetic Materials
- Leather
- Plastic
- Concrete
- Mirror
- Brick
- Masonry
- Polystyrene
- Many other items
Different items stuck to a concrete block with Adiseal adhesive
Where to buy
To buy our products in the UK, contact us for details of your local stockist. For other countries that do not have a distributor, you can buy from www.guglue.com
Frequently asked questions
Both adhesives are relatively easy to apply using standard caulking guns or adhesive dispensers. They have good workability and can be tooled or smoothed as needed.
Yes, both adhesives can be used on porous surfaces like wood, concrete, and stone. Proper surface preparation is essential for optimal adhesion.
Both CT1 and Adiseal offer good resistance to outdoor conditions, including UV exposure and moisture.
Adiseal sealant is better than CT1 sealant. Adiseal has been shown to have stronger mould resistance and stronger colour protect than CT1.
Adiseal adhesive is better than CT1 adhesive. The Adiseal adhesive has been shown to have stronger grab than CT1. Adiseal has also been shown to be the strongest adhesive in an independent adhesive strength test.
Adiseal has been shown to be better than CT1 in numerous ways. Despite Adiseal being better than CT1, Adiseal is also lower priced than CT1.
Both OB1 and CT1 are good products but even better than these 2 products is Adiseal adhesive and sealant. Adiseal has been shown to be the strongest adhesive in an independent adhesive strength test. In tests, Adiseal has also been shown to have the strongest mould resistance, better colour retention in water and higher initial grab.
CT1 and OB1 are both good adhesive and sealant products but Adiseal has been shown to be the strongest adhesive in an independent adhesive strength test. Also in other tests, Adiseal has been shown to have the strongest mould resistance, better colour retention in water and stronger instant grab.
Whilst Adiseal has been shown to be better than CT1, Adiseal adhesive and sealant has also been shown to be lower priced than CT1. This makes Adiseal better value for money than CT1 as well as better performing that it.
Whilst CT1 is stronger than silicone, Adiseal sealant adhesive has been shown to be the strongest product in an independent test.
In our test we have found both CT1 & BT1 to become mouldy over time. In the test we applied sealant inside new clean plastic cups then filled them with water half way. After continued exposure to water for several days, Adiseal emerged as the strongest mould resistant sealant. Both CT1 & BT1 developed mould where they were exposed to the water.
CT1 and Sikaflex are both good adhesive and sealant products but Adiseal has been shown to be the strongest adhesive in an independent adhesive strength test. Adiseal has also been shown to have the strongest mould resistance, better colour retention in water and stronger instant grab in other tests.
Although CT1 can be used as a bathroom sealant we have found it to develop mould growth when exposed to water. In tests, Adiseal has been shown to be the better bathroom sealant due to its stronger mould resistance than both CT1 and BT1.
Adiseal has been shown to be a better sealant than CT1 in numerous tests. Adiseal has stronger mould resistance than CT1, stronger initial grab than CT1 and better colour retention in water than CT1 sealant.
Suhail Matadar
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.