
What is PPF Made of?
PPF is constructed from thermoplastic polyurethane (TPU), a material chosen for its combination of flexibility, optical clarity, and physical resilience. TPU outperforms standard PVC films in both durability and longevity and serves as the basis for all premium PPF products available today.
A finished film is made up of several distinct layers that work together:
Cap Sheet
A removable outer layer that protects the film’s surface during handling, transit, and installation. It is peeled away before or during the fitting process.
Top Coat
A polyurethane coating on the film’s outer surface that resists abrasion, UV radiation, and environmental contamination. On self-healing products, this layer contains the polymer chemistry that allows minor scratches to repair themselves.
Film Layer
The core TPU body of the product is typically 135-165 microns across most product ranges. This layer absorbs impact from road debris and surface contact.
Adhesive Layer
A pressure-sensitive acrylic adhesive that bonds the film to the painted surface. On premium products, this is engineered to allow repositioning during installation and clean removal at end of life.
Release liner
A polyester or polyethylene-coated liner that protects the adhesive until the moment of application. Thickness varies between product grades however thickness alone does not determine how a film performs; the formulation, flexibility, adhesive behaviour, and topcoat chemistry all play an equally important role.

How Does PPF Work?
Once applied, PPF sits between the vehicle’s painted surface and external hazards, absorbing and dispersing damage that would otherwise contact the paint directly.
Physical Protection
The TPU film layer absorbs impact from road debris, including grit, stones, insects, and loose aggregate. Products are tested against stone chips, road debris, insect staining, mild chemical staining, and general weathering conditions.
UV Protection
The topcoat provides UV resistance, helping prevent the underlying paint from fading or oxidising over time. Avery Dennison’s SPF range uses a UV-resistant, solvent acrylic adhesive specifically formulated to resist yellowing and degradation from sun exposure.
Self-Healing
This is one of PPF’s most significant features (varies by product). The topcoat on most premium products contains a polymer that repairs minor scratches and swirl marks when heated. Avery Dennison’s SPF Matte heals at room temperature, while the SPF X3 and SPF Gloss Black require exposure above 40 degrees Celsius to activate. 3M’s Scotchgard Pro Series 200 also relies on heat, either from direct sunlight or a heat gun, to restore the surface.
Hydrophobic Surface
The topcoat on premium PPF products repels water and contaminants, making the vehicle easier to maintain and reducing the accumulation of dirt, insects, and road grime between washes.
Benefits of PPF
PPF comes with a range of benefits to the vehicle and the owner, and the product range spans a broad spectrum of applications, from full colour wraps or exterior protection coverage on high-value vehicles, to targeted front-end protection on everyday cars.
With durability ratings of up to ten years from leading manufacturers, and product options across multiple price points, there is a PPF specification suited to most vehicles and ownership situations.

Paint Preservation
PPF protects the original paintwork from physical damage, UV fading, insect staining, tree sap, bird droppings, road tar, and general environmental wear. The paint beneath remains in the condition it was in at the point of the PPF installation.

Value
A vehicle with well-preserved paintwork or custom colours can be highly saught after and therefore worth more at the point of resale. This is particularly relevant for higher-value vehicles, where paint condition is a primary factor at valuation.

Cost-Effective
The cost of a professional PPF installation is typically lower than the cost of remedial paintwork re-touches to correct stone chip damage or fading at a later stage. Protecting the vehicle from the outset is more cost-effective than correcting paintwork damage afterwards providing long-term cost efficiency.

Quality Finish
Gloss PPF preserves the depth and clarity of the paint beneath, delivering a finish that closely mirrors factory paint. Matte PPF allows matte-finished vehicles to maintain their appearance without the fragility of an unprotected matte paint surface. Clear PPF is optically transparent and when installed professionally, is almost undetectable on the vehicle’s surface giving invisible protection.
Quality Matters
Choosing paint protection film isn’t just about using 'the best' product. For installers, the real challenge is selecting the right film for the right job - without over-specifying, under-delivering, or confusing the customer in the process.
Inferior materials and poor installation choices will lead to a sub-standard application and overall result.
At William Smith, we know how to select the right PPF product for the job.
Our Brands
We choose our brand partners carefully making sure we only provide quality materials that will stand the test of time. We stock a range of leading PPF brand and products to suit every project. We've also got you covered with a range of tools and accessories to make every job that bit smoother.




Meet the Experts
From the team who train you, to the support you get at the start of a project, and the team who make sure you get the products you need on time - William Smith is here to provide you the best service and support at every step.
Download our full PPF brochure for more information.



Here for Installers
We support installers with brand and technical advice, creative problem-solving, and an installer-focused service.
PPF Ecosystem
We've got you covered with everything you need to do a great job. Extensive product options, access to software, training oportunities, and ongoing support.
Case studies
We see lots of amazing success stories from our installer network, here's a few of them.
Your Trusted PPF Partner
Unmatched Choice
We supply leading paint protection films from the top brands giving you access to premium and cost-effective options for every project and budget.
Stocked and Ready
With Next Day Delivery for orders up to 6pm and being one of the UK’s largest stockist, you can count on us to keep your jobs on track.
Expert Knowledge
Our in-house specialists have hands-on experience with PPF. Whether it’s technical advice over the phone, or certified training courses, we're here for you.
Proven Performance
We only supply films with trusted durability, conformability, and finish, so you can deliver wraps that not only look great but stand the test of time.



Ready to Start...
We're excited to support you on your PPF journey.
We supply trade professionals only; installers, wrappers, sign makers and printers, so you'll need a trade account before you can shop with us.
Register today and get 10% off your first online order.
View Product Range
Browse our range of PPF brands and products.
PPF Training
Learn from the experts and explore our range of PPF training courses.
Here's some extra information on commonly asked questions about PPF. If you can't find an answer to your question on the Hub or in the FAQ's, please get in touch, we'd be happy to help.






