Ultra Bond Repair Resin

Thirty years ago, long crack repair wasn’t a common method of windshield repair. Then Ultra Bond founder Richard Campfield’s developed Ultra Bond windshield repair resins that can repair cracks up to 18 inches in length.

Crackmasters is the ONLY windshield repair company licensed to use Ultra Bond in Canada, so we’re the ONLY company that can handle long crack windshield repairs.

Ultra Bond resins also stand the test of time and exposure. In independent laboratory testing, Ultra Bond outperformed all the other windshield repair resins.

And, in most cases, repairs performed with Ultra Bond resins are nearly invisible, so you won’t even be able to tell there was ever a crack or a chip in your windshield in the first place. Look at these before and after photos of a long crack in a windshield repaired with Ultra Bond resin.

Independently Tested for Quality

Lab and field tests show that Ultra Bond is the leading windshield repair resin. All the testing noted here was performed on panes of windshield glass which were bonded together by the resin products tested.

Test 1 –Strength of Windshield Repair Resin Hold

Test one is a compression shear strength test, which tests the maximum load the bond can handle before the bond fails. To determine the strength of each resin’s bond, resin was applied between two pieces of windshield glass, essentially gluing them together. Then we tried to pull them apart by exerting opposite force in a vertical direction.

Five Ultra Bond resins were able to withstand more force than any other resin, illustrating the strength of the Ultra Bond hold. The stronger a resin bond is, the less likely it is that a windshield repaired with that resin will fail in an accident if an airbag deploys or a person crashes into it.

Resin Viscosity* Compression Shear Strength-PSI** Ranking
Ultra Bond U.B. -7 2400 3406.6 1
Kemxert Xert 200 200 3621.4 2
Ultra Bond U.B. -1 20 3074.9 3
Liquid Resins Blue Cap 25 2979.4 4
Glas-Weld Systems Pro 300 60 2868.4 5
Ultra Bond U.C. -4 100 2844.0 6
Ultra Bond U.B. -5 830 2695.4 7
Ultra Bond U.B. -3.5 80 2636.0 8
Liquid Resins Red Cap 25 2619.1 9
Liquid Resins Clear Cap 25 2600.0 10
* The higher the number, the thicker the resin.
** This is the maximum load the glass can withstand at the bonded point before the bond fails.

Test 2 – Elasticity of Windshield Repair Resin

Test two measured the elasticity of the resin bond by exerting opposing force on the glass. The elasticity of a resin refers to its ability to expand and contract with temperature changes without breaking. The more elastic the bond, the less likely it is that the repair will fail.

Ultra Bond resins swept the top six spots in this test and finished with seven in the Top 10 for elasticity.

Resin Viscosity- CPS* Modulus of Elasticity-PSI** Ranking
Ultra Bond U.B. -7 2400 369388 1
Ultra Bond U.B. -5 830 366150 2
Ultra Bond U.B. -1 20 341332 3
Ultra Bond U.B. -4 250 320448 4
Ultra Bond U.B. -3.5 80 316682 5
Ultra Bond U.B. -8 3600 318038 6
The Glass Mechanix Thick N/A 307317 7
Ultra Bond U.B. -2 40 291481 8
OptiKleer Luquiglas TCLT Med. Crack Repair N/A 284141 9
Glas-Weld Systems Pro500 40 280080 10
* The higher the number, the thicker the resin.
** The measurement of the elasticity of a substance.

Test 3 –Strength of Hold After Exposure

Test three was another shear compression test, this time performed after the bonded glass was exposed to two continuous hours of boiling water. Extreme temperatures can cause resins to fail, and this test measured the performance of a resin after prolonged exposure to an extreme temperature of 100 degrees Celsius.

Seven Ultra Bond resins ranked in the top 10, demonstrating their ability to expand and contract without breaking the bond with the glass. That means windshields repairs performed with Ultra Bond resins can withstand the extreme temperature changes of a hot defroster on a cold windshield.

Resin Viscosity- CPS* Compression Shear Strength-PSI** Ranking
Ultra Bond U.B. -1 20 2130.0 1
Ultra Bond U.B. -7 2400 1539.4 2
Ultra Bond U.B. -8 3600 1526.6 3
Ultra Bond U.B. -6 1600 1435.9 4
Winshield Repair Systems 15 1435.1 5
Glas-Weld Systems Pro 200 40 1408.0 6
Kenxert Corp. 100 100 1357.4 7
Ultra Bond U.B. -3 60 1296.0 8
Ultra Bond U.B. -2 40 1239.1 9
Ultra Bond U.C. -2 40 1238.1 10
* The higher the number, the thicker the resin.
** This is the maximum load the glass can withstand at the bonded point before the bond fails.

Windshield Repair Resin Rankings

Overall rankings were determined by average placement in all three tests. Final results have Ultra Bond nearly sweeping the top ten spots, making it the best windshield repair resin available. And, since ONLY Crackmasters gets to use it in Canada, our windshield repairs are the best.

Resin Viscosity- CPS Ranking
Ultra Bond U.B. -7 2400 1
Ultra Bond U.B. -1 20 2
Ultra Bond U.B. -8 3600 3
Ultra Bond U.B. -3.5 80 4
Ultra Bond U.B. -5 830 5
Ultra Bond U.C. -4 100 6
Ultra Bond U.B. -2 40 7
Ultra Bond U.B. -6 1600 8
Ultra Bond U.B. -3 60 9
Kenxert Corp. 100 100 10