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Installer with a heat gun shaping film to the back window of a white Nissan GT-R, both doors open under work lights, in the Brookswood Tint bay in Langley

Window tint · Install quality

How Do You Spot a Bad Tint Job?

Brookswood Tint Shop · Updated · 5 min read

The short answer

Check the edges, what's trapped under the film, and how it looks once it has cured. Ragged or uneven edges, dirt or hair under the film, bubbles that are still there after the first week, lifting corners, knife marks and damaged defroster lines all point to a poor install. So does front-door film fitted without anyone telling you it isn't road-legal in BC. The usual fix is removal and a proper re-tint.

Normal in the first week
Light haze, small water pockets that shrink
Not normal after the cure
Bubbles, lifted corners, grit under the film
Knife marks or cut grid lines
An install fault
How the shop cuts film
On a plotter, to the exact year, make and model
The fix
Steam removal and re-tint, priced per window

What are the signs of a bad tint job?

Look for flaws at the edges, flaws under the film, and damage the installer left behind.

Gaps and uneven edges

A good edge follows the glass at the same small distance all the way round. A poor one wanders: wide slivers of bare glass in one corner, film almost touching the frame in another, or a jagged line where it was trimmed freehand. On a roll-down window, lower the glass a few centimetres and look along the top edge, where an uneven cut is easiest to see.

Dirt, hair and specks under the film

Grit, lint or a hair trapped under the film shows as a small raised point. It isn’t water, so it never dries out; it means the glass wasn’t clean when the film went on.

Bubbles that outlast the cure

Haze, and small soft pockets of water, are expected during the first week and dry out. Pockets that haven’t shrunk once the film is fully dry, or bubbles that turn up later, are not part of curing.

Lifting or peeling corners

An edge or corner that lifts within weeks wasn’t bonded properly, unless a window was lowered during the cure. Don’t press it back down; show it to the installer as it is.

Creases on curved glass

Back glass and many quarter windows curve two ways, so flat film has to be heat-shrunk to the shape. Skip or rush that step and you get creases or ripples, usually near the edges.

Knife marks and broken defroster lines

Scratches in the glass, nicks in rubber seals or cut trim are the marks of film trimmed on the car with a blade. On the back glass a blade can also cut the defroster grid: if part of the window no longer clears when the rear defroster is on, check those lines.

Mismatched shades

Windows meant to match shouldn’t vary from door to door. One exception isn’t a fault: film over factory privacy glass ends up darker than the same film on clear glass, as explained on tinting over factory tint.

Which flaws are normal in the first week, and which aren’t?

Water flaws in the first week are normal; anything else, or anything that outlasts the cure, isn’t:

What you see When Normal? What to do
Light haze First week Yes Wait; it clears slower in cold, damp weather
Small, soft water pockets that shrink First week Yes Leave them alone
Pockets that haven’t changed after the cure Weeks later No Show the installer
Grit, lint or hair under the film Any time No Show the installer
Lifted edge or corner Any time No Don’t press it; call
Creases or ripples on curved glass Any time No Show the installer
Scratched glass, cut seals or grid lines From day one No Photograph it and call

Haze is explained on why new tint looks hazy. Bubbling in film that’s several years old is a different problem, adhesive giving out with age, covered on bubbling tint removal.

What does a properly installed tint job look like?

Edges that sit evenly inside the glass, nothing trapped underneath, curved glass with no creases, and no marks on the glass, seals or trim. You should also leave knowing which film and shade went on, and what’s legal.

At Brookswood Tint a computerized plotter cuts every piece to the year, make and model, so there’s never a blade on the glass or the trim. After cutting, every piece is shaped with heat and fitted by hand, which is how curved back glass ends up flat. The film is LLumar, with a lifetime warranty on the film and on the shop’s workmanship; wherever you go, make sure the invoice names the film, the shade and the windows. Installs are done inside the shop rather than in a driveway, which keeps dust off the glass; mobile tint vs shop tint looks at that trade-off, and choosing a tint or PPF shop covers what else to ask.

Yes, in two ways: film on glass BC keeps clear, and film so bad the driver can’t see properly.

Front door film, or windshield film reaching lower than 75 mm from the top, isn’t road-legal in BC at any shade under MVAR s. 7.05(8), and inspectors fail it under items 13d and 12e of the 2025 Vehicle Inspection Manual. Mission RCMP says a ticket is typically $109, and a Notice & Order can add the job of stripping the film and passing an inspection. Brookswood Tint will only fit front film when a customer asks, and explains all of that first. An installer who put it on without a word left you carrying a risk you didn’t choose.

Badly failed film is the second problem. Section 7.05(1) bars driving a vehicle whose windshield or any window is “in such condition that the vision of the driver is impaired”, and inspection item 14a fails back glass so clouded the driver can’t see clearly 60 m behind the car.

What can you do about a bad tint job?

Go back to the installer first, with photos and your invoice, while the job is fresh. If the film is faulty or the work is poor, it’s theirs to put right under whatever warranty they gave you. LLumar points owners back to the installer: its FAQ ends its lifetime warranty line with “see dealer for warranty details” (LLumar FAQ).

If that isn’t an option, the fix is removal and a re-tint. Trapped grit and badly cut edges are part of the film that’s on the glass, so the window needs new film rather than a touch-up.

How the removal works

Brookswood Tint steams the old film off rather than cutting it, dissolves the adhesive completely and tests the rear defroster grid before and after. Steam protects the grid lines that are still intact; it can’t repair a line a blade has already cut, which is why the test beforehand matters. The back glass is covered on rear window tint removal.

Getting a bad tint job redone in Langley

Send photos of the problem windows with the year, make and model. Removal usually takes 1 to 3 hours, is priced per window, and costs less if you re-tint in the same appointment; on most cars both are finished the same day.

The replacement is LLumar ATC, IRX or AIR, with the lifetime warranty on film and workmanship. Start with the tint removal service, read the warranty terms, or ask for a price on the removal quote form.

Black and white photo of a technician aiming a heat gun at film on a silver car's door window, a card in his other hand
Heat and a hard card shape the film to the curve of the glass by hand, so it lies flat without creases.

Asked at the counter

Related questions

01How long should I wait before judging a new tint job?

Give it the first week. Haze and small water pockets are normal while the film cures; anything still there after that, or anything that clearly isn't water, is worth showing the installer.

02Is a small gap between the film and the edge of the glass normal?

A narrow margin that stays even all the way round is what a precise cut looks like. A gap that is wide in one spot and tight in another, or a strip of bare glass showing at the top of a lowered door window, isn't.

03Will Brookswood Tint fix tint another shop installed?

Not under its own warranty, which covers its own work. It removes the old film, with steam on the back glass, and re-tints in LLumar, and the removal is discounted when you re-tint.

04My new tint looks darker on the back doors than the front. Is that a fault?

Not if the back doors are factory privacy glass. The same film over darker glass ends up darker, because the two shades multiply.

How we checked this

Sources

  1. BC Motor Vehicle Act Regulations, Division 7, s. 7.05(1) and (8)
  2. BC Vehicle Inspection Manual 2025, section 8, items 12e, 13d and 14a
  3. Mission RCMP, traffic services FAQ
  4. LLumar, Window tint and PPF FAQ

Prices, timing and process come from Brookswood Tint Shop. Legal and product facts are quoted from the sources listed, checked on October 8, 2026. Laws and product lines change; call the shop if anything here doesn't match what you've been told.

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