Exterior Grab Adhesive
Exterior Grab Adhesive: Heavy Duty External Outdoor Bonding
Adiseal exterior grab adhesive is a high-performance adhesive that provides a high-strength and heavy duty bond. It has been shown to be the strongest grab adhesive in an independent adhesive strength test. Adiseal provides a strong, flexible, waterproof and durable bond in interior or exterior bonding applications. It also has the added advantage of grabbing materials quickly which can potentially save time and money on labour costs.
Adiseal external grab adhesive consists of many properties such as high – strength, resistant to moisture, resistant to temperature fluctuations and UV rays. It can be used on a wide range of materials varying from metal, wood, concrete, stone and brick.

What is the best grab adhesive?
Ultimate Handyman conducted an independent adhesive strength test to determine the best grab adhesive. The results crowned Adiseal exterior grab adhesive as the top performer. Adiseal’s strong adhesive bond exceeded the test rig’s capacity, causing the screws holding it to begin to rip out before Adiseal’s bond broke. The test on Adiseal had to be abandoned. Even the hydraulic ram’s seal broke, leading to hydraulic fluid leakage, highlighting Adiseal’s exceptional strength.

Test results
In the best adhesive bond strength test between wood and metal, Adiseal demonstrated remarkable resilience, enduring pressures exceeding 3123+ psi. In contrast, all other competitors failed at 1115 psi or lower, making Adiseal more than three times stronger than the closest rival. The chart below vividly underscores Adiseal’s exceptional strength.

Watch the video below of the test carried out by Ultimate Handyman.
Best grab adhesive 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.
Even higher instant grab
Adiseal adhesive and sealant has high initial grab but for even more initial grab, try the Adiseal Hi-Grab adhesive.
Adiseal Hi-Grab is the ultimate instant exterior grab adhesive designed to deliver heavy-duty power grab and bond strength. The waterproof adhesive boasts flexibility, making it ideal for both dry and wet applications, indoors and outdoors. Using the same pro-grade polymer technology as our Adiseal construction adhesive and sealant, Adiseal Hi-Grab takes instant hold adhesive to even greater heights. Its thicker consistency ensures superior initial holding power, surpassing even the performance of Adiseal adhesive and sealant.
For most adhesive bonding applications, we suggest using Adiseal adhesive & sealant over Adiseal Hi-Grab. This preference arises because Adiseal Hi-Grab is notably thick, demanding greater force to bring two items together and necessitating a high-quality caulking gun (sealant gun) for smooth dispensing due to its thickness.

Great grab adhesive on vertical surfaces
When attempting to bond items vertically in interior or exterior applications, the risk of downward sliding increases due to gravity pulling the item down while the adhesive resists. Adiseal Hi-Grab exterior grab adhesive excels in bonding heavy items on vertical surfaces, eliminating the need for temporary supports. Its outstanding grip prevents downward movement, resulting in time and labour cost savings.
Phenomenal Grab
Watch the superior phenomenal grab performance of Adiseal Hi-Grab in the video below.

Benefits of Adiseal Hi-Grab
There are many benefits of Adiseal Hi-Grab over other products. These include:
- Ultimate instant grab
- Extreme strength when cured
- Works in dry, damp, wet & even underwater
- Mould resistant
- Over paintable (with most paints)
- Waterproof adhesive
- Non brittle (designed to remain permanently flexible)
- UV resistant
- Virtually odourless (no strong smells when using the product)
- Isocyanate free
- Solvent-free (safe for sensitive materials like polystyrene and mirrors)
- No shrinkage or cracking (provides a better adhesive bond)
- Prevents fungal growth
- Prevents bacteria growth
- Good resistance to chemicals
- EC1 Plus certified (no VOC)
- Indoor and outdoor adhesive sealant, making it a great exterior grade construction adhesive
Adiseal Hi-Grab is available in white colour in 290ml cartridges. To get it in any other RAL colour, please contact us.
Which materials will it bond?
Adiseal adhesive sealant and Adiseal Hi-Grab will both successfully bond the following items:
How to use a grab adhesive
How to use a grab adhesive.
- Surface Preparation
For a robust bond, prepare surfaces by ensuring they are clean, dry, and free from dust, grease, paint, or contaminants. Use a fine brush, such as a paintbrush, to remove fine dust on surfaces like concrete.
- Cut the Nozzle
If your grab adhesive comes in a tube, cut the nozzle to create an appropriate-sized opening. The size of the nozzle opening will determine the thickness of the adhesive bead.
- Apply the Adhesive
Apply an even adhesive bead along one surface. Wider adhesive coverage ensures a stronger bond compared to limited coverage.
- Join the Surfaces
Once the adhesive is applied, join the two surfaces together. Apply firm pressure to ensure good contact between the surfaces.
- Adjustment
Certain products provide a brief adjustment time to align bonded items. Use this time to make necessary adjustments, and gently slide surfaces side to side for adhesive distribution, improving bonding.
- Curing Time
Allow the adhesive to cure as per the manufacturer’s instructions. The curing time may vary depending on the specific adhesive and environmental conditions.
- Cleanup
If there is any excess adhesive that squeezed out during bonding, clean it up using a suitable solvent or as directed by the adhesive manufacturer.
- Storage
After use, seal the adhesive tube or cartridge tightly for future use, ensuring it remains in good condition.
Tip: To store Adiseal once opened, leave about 1cm worth of product out of the nozzle and store the tube upright in a cool dry place. Adiseal requires moisture for it to cure. The exposed part out of the nozzle will cure creating a cap. To re-use Adiseal, pull the cured part out or cut the nozzle until the uncured part is reached.
Colours
Adiseal adhesive and sealant is available in the following colours:
- White adhesive and white sealant
- Black adhesive and black sealant
- Grey adhesive and grey sealant
- Clear adhesive and clear sealant
- Brown adhesive and brown sealant
Adiseal can also be manufactured in any RAL colour.
Where to buy grab adhesive
In the UK, to buy grab adhesive, please contact us for details of your local stockist. For other countries, our products can be purchased from www.guglue.com
Frequently Asked Questions About Instant Grab Adhesive
Adiseal has been shown to be the strongest adhesive in an independent adhesive strength test. It is weatherproof making it ideal for use outdoors. Adiseal is waterproof, flexible, UV resistant and durable.
Adiseal is designed to provide high performance bonding both externally as well as internally. Its solvent free formula is safe for use on many materials and it does not release a harsh solvent smell when using indoors.
The best grab adhesive for outdoors Adiseal has been shown to be the strongest adhesive in an independent adhesive strength test. It is weatherproof making it ideal for use outdoors. Adiseal is waterproof, flexible, UV resistant and durable.
Some grab adhesives are not suitable for use outside as they are not waterproof, UV resistant or flexible. Adhesives used outside usually have to withstand harsher conditions. Adiseal is great at both inside and outside bonding and sealing applications.
Adiseal is our best adhesive for exterior use. It is very strong, waterproof, flexible, UV resistant and highly durable. It has also been shown to be the strongest adhesive in an independent adhesive strength test.