Streaky windows are one of the most
frustrating things about cleaning a car.
You spend ten minutes wiping them down
and end up with smears that are worse
in direct sunlight than before you started.
The problem isn't effort — it's technique
and product choice. Get those right and
perfectly clear windows take less than
five minutes.
Here's exactly how to do it.
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## Why Windows Streak
Windows streak for three main reasons:
**1. Wrong product**
Household glass cleaners contain ammonia
which leaves a residue on automotive
glass and degrades tinted windows over time.
**2. Wrong cloth**
Paper towels and regular cloths leave
fibres and lint on the glass. They push
dirt around rather than lifting it.
**3. Wrong technique**
Circular motions trap dirt and spread
it across the surface. Cleaning in
direct sunlight causes product to
dry before you can wipe it off,
leaving marks.
Fix these three things and streaks
become a thing of the past.
---
## What You Need
→ Automotive glass cleaner
(ammonia-free)
→ Two microfibre cloths
(one to apply, one to buff)
→ A shaded spot to work in
That's it. No special equipment needed.
---
## Step-by-Step: Exterior Windows
**Step 1 — Work in the shade**
Never clean windows in direct sunlight.
The product dries too fast and leaves
marks before you can remove it.
Find shade or work early morning
or evening.
**Step 2 — Spray the glass cleaner**
Spray directly onto the glass — not
onto the cloth. Use enough to cover
the surface without soaking it.
**Step 3 — Wipe with the first cloth**
Use straight lines — either horizontal
or vertical — not circular motions.
Work from top to bottom. This lifts
dirt rather than moving it around.
**Step 4 — Buff with the second cloth**
Immediately follow with a dry
microfibre cloth using the same
straight line technique. This removes
any remaining product and leaves
the glass clear.
**Step 5 — Check from multiple angles**
Streaks are often only visible from
certain angles. Check the window from
inside the car as well as outside
before moving on.
---
## Step-by-Step: Interior Windows
Interior windows need slightly different
treatment. They collect a film of
off-gassing from plastics and vinyl
over time — especially in new cars —
which makes them particularly prone
to streaking.
**Step 1 — Reach awkward angles carefully**
The windscreen interior is the hardest
window to clean. Use a long-handled
applicator tool or wrap your hand
in the microfibre cloth and work
from the passenger seat for better
reach and angle.
**Step 2 — Use less product than outside**
Interior glass doesn't get as dirty
as exterior — use a lighter application
to avoid residue buildup.
**Step 3 — Wipe in one direction only**
Pick horizontal or vertical and stick
to it. This makes it easy to identify
and eliminate any remaining streaks
on the second pass.
**Step 4 — Buff immediately**
Don't let the product sit on interior
glass. Buff off straight away with
the dry cloth.
---
## Common Mistakes to Avoid
→ Using household glass cleaner —
damages tint film over time
→ Cleaning in direct sunlight —
product dries and streaks instantly
→ Using paper towels — leaves lint
and fibres on the glass
→ Circular wiping motions — spreads
dirt and creates swirl marks
→ Spraying onto the cloth rather
than the glass — product distribution
is uneven and ineffective
---
## How Often Should You Clean Car Windows?
**Exterior:** every wash, or at least
every two weeks. Road grime, insect
residue, and water spots build up
faster than most drivers realise.
**Interior:** once a month is sufficient
for most drivers. More frequently if
you notice the plastic film building
up or visibility is reduced at night.
---
## The One Product Worth Buying
If you only add one product to your
car care kit for windows — make it
a quality ammonia-free automotive
glass cleaner.
The difference between a good automotive
glass cleaner and a household alternative
is immediately obvious. Clearer finish,
no residue, and safe for all window
tints including factory-applied film.
---
Clear windows aren't just about
aesthetics — they're a safety issue.
Reduced visibility at night or in
low sun is one of the most common
contributing factors in accidents
that drivers don't even notice until
it's too late.
Clean windows. Clear vision. Every drive.
---
*Keep your car looking and performing
its best with VELOX's range of
premium car care products.*
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