Professional Construction Products

Developing high performance construction products through extensive research and testing.

Weatherproof Adhesive

Weatherproof Adhesive Glue: Indoor or Outdoor Bonding & Sealing

Adiseal weatherproof adhesive glue delivers a 100% water-resistant bond in dry, damp, wet, or even underwater conditions. It is suitable for both internal and external construction bonding owing to its weatherproof characteristics. With the ability to endure harsh weather conditions, it ensures a water-resistant, high-strength, durable, and flexible construction bond. Adiseal weatherproof adhesive has demonstrated its strength, emerging as the strongest adhesive in an independent adhesive strength test.

Best weatherproof adhesive sealant in test

Adiseal Weatherproof Adhesive

Most adhesives require dry conditions for effective bonding. Adiseal high-performance construction weatherproof adhesive creates bonds on dry, damp, wet surfaces, and even underwater. It adheres to items whether the surface is wet or dry. Given its ability to cure underwater, it proves ideal for water-related projects. Adiseal also resists UV radiation.

Strongest weatherproof construction adhesive in testing

What is the strongest weatherproof adhesive?

In an independent test carried out by Ultimate Handyman to determine the strongest adhesive, Adiseal unequivocally emerged as the strongest construction adhesive, surpassing its competitors by a significant margin.

The test protocol involved applying each adhesive between wood and metal surfaces and subjecting them to pressure using a hydraulic ram to measure the breaking point of each bond. Adiseal exhibited exceptional strength, proving to be more than three times stronger than the next best product.

The adhesive bond strength of Adiseal became evident as the screws of the test rig started tearing out, and even the hydraulic ram seal gave way, leading to the premature termination of the test. Adiseal undeniably established itself as the strongest adhesive by a considerable margin.

Test results

In the evaluation of bond strength between hardwood and metal, Adiseal demonstrated remarkable resistance to pressure, enduring a force exceeding 3123+ psi. In contrast, all other grab adhesives faltered at 1115 psi or lower. The chart below vividly illustrates Adiseal’s exceptional strength as a grab adhesive, showcasing its unparalleled performance.

strongest adhesive strength test results chart

Strongest adhesive strength test by Ultimate Handyman

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
Strongest adhesive strength test results table.

“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.

Mould resistance

In situations where a weatherproof adhesive is exposed to water, the possibility of mould growth on the adhesive surface exists. Adiseal, however, exhibits exceptional mould resistance. To assess the mould resistance of various adhesives, we conducted a test involving submerging them in water for several days. The image below clearly demonstrates that Adiseal remained free from mould, even after undergoing 90 days of continuous submersion in the same water.

anti mould adhesive & mould resistant  glue

Clear weatherproof adhesive

Adiseal Ultra Clear Weatherproof Adhesive stands out for its transparency, unlike some other clear adhesives that may become cloudy upon application. Additionally, it retains its clarity even when exposed to water.

Adiseal ultra clear weatherproof adhesive compared to clear silicone

Benefits of Adiseal

Benefits of Adiseal weatherproof adhesive include:

Materials it can bond

Adiseal weatherproof adhesive bonds the following items:

How to Use a Weatherproof Adhesive

How to use a weatherproof adhesive

  1. Surface Preparation

    Ensure that the surfaces to be bonded are clean, dry, and free from dust, grease, or debris.
    Clean the surfaces thoroughly using an appropriate cleaner or solvent.

  2. Apply the Adhesive

    Apply the weatherproof adhesive to one of the surfaces in a thin, even layer. Covering more surface area ensures a better bond.
    Take care not to apply too much adhesive that it squeezes out excessively when the two materials are pressed together.

  3. Join the Surfaces

    Press the two surfaces together, ensuring that the adhesive is in contact with both.
    Apply firm and even pressure to facilitate a strong bond.

  4. Temporary support (not always necessary)

    Depending on the adhesive type and the materials being bonded, you may need to use clamps or other forms of support to hold the surfaces together during the curing process.

  5. Curing Time

    Allow the adhesive to cure for the recommended duration specified by the product instructions. Curing times can vary, and factors such as temperature and humidity may influence the process.

  6. Clean Excess Adhesive

    Remove any excess adhesive that may have squeezed out during the bonding process. Use a suitable solvent or cleaner recommended by the adhesive manufacturer.

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.

adhesive being applied on wet brick surface


Adiseal adhesive and sealant is available in the following colours:

Adiseal can also be manufactured in any RAL colour.

Where to buy

In the UK, to buy weatherproof adhesive, please contact us for details of your local stockist.

For other countries, you can buy from www.guglue.com

Frequently asked questions about weatherproof adhesive

What is weatherproof adhesive?

Weatherproof adhesive is an adhesive specifically designed to withstand exposure to various weather conditions, including sunlight, rain, and temperature fluctuations.

Can weatherproof adhesive be used indoors and outdoors?

Yes, weatherproof adhesive is suitable for both indoor and outdoor applications.

What surfaces can weatherproof adhesive bond?

Weatherproof adhesive can bond a variety of surfaces, including metal, wood, plastic, glass, and more.

Is weatherproof adhesive resistant to water and moisture?

Yes, weatherproof adhesive is formulated to resist water and moisture, making it suitable for use in damp or wet conditions.

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.