No longer recommended by Calgary PPF
Calgary PPF is no longer recommending the use of Windshield Protection Films as a viable method of protecting windshields for Calgary consumers.
You will still get rock chips even if overall volume is diminished.
The film prevents glass shops from being able to fix these before they spider.
The process of removing the film to fix these chips often forces the chip to spider out, ruining the windshield.
These films constantly de-laminate and become scuffed and scratched within less than a year of driving, obstructing vision and marring the appearance of the vehicle.
These issues can create extremely dangerous driving conditions due to markedly poor visibility. This issue also presents extreme liability issues for the driver in the event of an accident.
These films are prohibitively expensive both for the end consumer and installation shops.
It is impossible to install these films to a high degree of aesthetic perfection. Burn marks and creases are common.
These films are not legal within the province of Alberta.
These reasons apply to all current windshield protection film brands on the market today. All other coating or protection products are placebo products with zero provable efficacy.
The only viable protection for windshields currently on the market is windshield insurance. Get your chips fixed ASAP, before they spider.
Our crew members have installed windshield protection films here in Calgary for the better part of the last 4 years. All existing brands on the market have shown abysmal build quality with very poor durability. Most shops in town have discontinued these products for the same reason. Buyer’s remorse is exceedingly high with these products. Customers often end up upside down financially with these products due to expensive broken windshields. Windshield protection films can become extremely dangerous to drive with as the common delamination issue heavily diminishes visibility.
Windshield protection films generally fall into two primary material categories: polyester (PET) and thermoplastic polyurethane (TPU). Both are marketed as sacrificial impact layers designed to reduce rock chips, pitting, and abrasion on automotive glass, but their performance characteristics differ substantially due to the underlying polymer chemistry.
Polyester-based films, historically the first type to be widely adopted, are typically thinner, stiffer, and less elastic. Their rigidity allows them to resist light abrasion and sandblasting but limits their ability to absorb high-energy impacts. Independent lab testing and manufacturer specifications consistently show that PET films have lower elongation-at-break values and poorer energy dispersion compared to elastomeric materials. As a result, polyester films tend to crack, haze, or delaminate sooner—especially in climates with high UV exposure or frequent thermal cycling. Products such as those offered by ClearPlex are well-known examples of PET-based windshield films that prioritize optical clarity and initial hardness over long-term elasticity.
TPU-based windshield films, similar in chemistry to paint protection film (PPF), represent a newer and more technically advanced approach. TPU exhibits significantly higher elasticity, impact absorption, and tear resistance, allowing it to deform under impact and dissipate energy rather than fracture. Industry data from polymer manufacturers and automotive protection testing consistently shows TPU films outperform PET films in stone-impact simulations, durability testing, and long-term environmental resistance. Brands such as ExoShield and others produce TPU windshield films specifically engineered to balance optical clarity with mechanical resilience.
However, despite their superior protective performance and longer service life, TPU films are not immune to fundamental failure modes. Over time, they are still subject to UV degradation, adhesive breakdown, surface pitting, and optical distortion—particularly in harsh driving environments. While these failures typically occur later and more gradually than with polyester films, the end result is similar: reduced clarity and the need for removal or replacement.
In summary, TPU windshield films are demonstrably more protective and durable than polyester alternatives, supported by material science data and real-world performance testing. Nevertheless, both material types ultimately face the same physical and environmental limitations inherent to sacrificial polymer layers exposed to constant impact, UV radiation, and temperature extremes.