Washing windows

Washing windows without streaks

Why tap water always leaves streaks, what does work, and when it is cheaper to hand it over.

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The problem

Why do streaks appear when you wash the windows yourself?

Almost always for the same reason: limescale in tap water. As it dries it stays behind and you see it against the light as a haze or a streak. Soap makes it worse, because soap residue holds dust. Anyone working without detergent uses purified water: it dries without residue.

Limescale in tap water is the main cause of streaks
Soap residue attracts dust and hazes over within a week
Never work in direct sun: the water dries faster than you can squeegee
A rubber squeegee in overlapping passes beats polishing in circles
How it works

Doing it yourself in three steps

Works fine at ground level.

01

Dust first

Wipe frame and glass dry, or you turn dust into mud.

02

Wet and squeegee

Pull in overlapping passes and wipe the blade dry each pass.

03

Finish the edges

The edge along the frame is where the streak almost always is.

Services

When handing it over pays

Doing it yourself has a limit.

Upper floors

Working from a ladder is the main reason people call.

Lots of windows

A whole house takes you half a day, every time.

Stubborn limescale

Baked-on scale does not come off with a cloth.

Roof windows and conservatories

Awkward angles you cannot safely reach.

Business premises

Shop fronts and office glass need a fixed schedule.

Apartment blocks

Communal glass is usually nobody’s job.

Guarantee

Satisfaction guarantee

If something is not right, tell us within 48 hours and we re-clean it free.

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FAQ

Frequently asked questions

Why do I get streaks on my windows?
Almost always limescale in the tap water or soap residue. Limescale stays behind as it dries, soap holds dust. That is why professionals use purified water with no detergent.
Is vinegar or methylated spirit a good idea?
It helps against limescale but does not solve it, and spirit can damage plastic frames. Fine for one window, not for a whole house.
When is the best time to clean windows?
On a cloudy day or early in the morning. In direct sun the water dries faster than you can squeegee and streaks are guaranteed.
How often should it be done?
Four times a year for a home. On a busy road or near the coast, closer to six.
What does a window cleaner cost?
It depends on the number of windows and the floor. Ask for a free quote and you have a fixed price within 2 hours.
Do you clean only the outside?
Yes. Many customers do the inside themselves and have only the outside and the upper floors done.
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