Window Film

Safeguards Glass from
Delivery through Installation

Preserve™ window film provides an end-to-end solution to dirty and marred windows. Pre-applied on Cardinal insulating glass (IG) units, Preserve film protects everybody’s interests. It also protects your relationship with the homeowner, as they get undamaged, clean windows every time.

On the job site, stuff happens.

Spattered paint. Excess stucco. Slopped mud. Scratched glass. By the time construction is over, the windows are a mess.

Post-construction cleanup is an annoyance, as you spend time and money cleaning instead of moving to the next job.

But if your windows are covered with Preserve, cleanup is a snap. When the job is over, builders simply peel off Preserve and throw it away– along with all the grime, even the labels.

From the Factory through Customer Handover

We at Cardinal and our window manufacturers take care to ensure that glass leaves factories in flawless condition.

Preserve is the clear solution to window protection. This patented film defends your glass. Factory-applied to both the outer and inner surfaces in overlapping layers, it ensures that the entire glass surface is protected all the way through the phases of construction, up to client approval.

The fast and furious are not always the careful and cautious.

Construction crews. Hard-working, sure. Careful, not always. By the time everyone is finished, the windows are filthy. In addition, labels create “ghosting,” leaving a distracting visual blemish. Cleaning up this mess at the end of the job is a hassle, taking up valuable time and labor. Even worse, damaged glass must be reordered and replaced. Preserve solves this job-site dilemma.

Because the film is applied at the factory, construction crews do not waste time applying and removing protective coverings such as tapes, films or sprays. Other makeshift fixes like newspaper or cardboard are also avoided, since they block out light.

Preserve is clear, so natural light still shines into the interior of the structure.

Preserve saves you
time, money, and a
lot of hassle.

Without Preserve, glass generally requires at least two heavy-duty cleanings before a job is finished. A recent market research study found that Preserve could save hundreds of dollars per house in cleanup costs. Not exactly pocket change.

With Preserve, you say goodbye to these time-wasting cleanups. At the end of construction, Preserve peels off, taking the accumulated dirt and labels with it. Clean windows can mean a shorter punch list.

Finally, because Preserve contains no harmful chemicals or by-products, it can be disposed of with the rest of normal construction site debris.

So Preserve your windows. It protects the glass, reduces cleanup times, and keeps your customers happy. And it helps deliver a beautiful home, with glistening and undamaged windows.

Preserve Specifications


min 10.0”, max unlimited


min 4.5”, max unlimited

Dimensional tolerances


Facts about Preserve

Preserve incorporates a water-based adhesive and is rated as a low-density polyethylene.

Preserve should be removed within six months of installation.

Preserve should not be pressure

Preserve contains no harmful chemicals or byproducts and can be disposed of with normal construction site debris.

Do not affix permanent grilles or external fixtures directly to Preserve. Consult Cardinal or your window supplier for proper application techniques.

Preserve is covered by one or more of the following U.S. patents: 5,020,288, 5,107,643, 5,599,422 and 5,866,260.

Acid should not be used on Preserve.

Do not use razor blades to remove Preserve film which can scratch or score the glass.

Additional Resources