How to Clean Windows at Home: A Complete Guide

Clean windows make a surprising difference to how a room feels. Natural light comes through more clearly, the view outside looks sharper, and the whole house simply looks better cared for. Yet window cleaning is one of those jobs that many people put off, often because previous attempts have left streaks or smears that look worse than before they started.

In this guide, we cover the best approach to cleaning windows at home, the right products to use, how to tackle common problems like hard water stains and salt residue, and when it makes sense to call in our team for a more thorough clean.

What You Need Before You Start

Having the right kit to hand makes the job much easier and significantly reduces the chance of streaks. Here is what we recommend for most homes:

• A good quality squeegee with a rubber blade. This is the single most important tool. Cheap squeegees leave uneven marks. Look for one with a replaceable blade so you can keep it effective.
• A microfibre cloth or scrubber sleeve for applying solution and loosening dirt.
• A bucket large enough to dip the scrubber fully.
• Washing-up liquid or a dedicated window cleaning solution. A few drops of washing-up liquid in warm water works well for most windows. Avoid anything with heavy fragrance or conditioners added.
• A dry lint-free cloth or chamois leather for finishing the edges and catching any drips.
• A stepladder if you are cleaning upper-floor windows from inside, or a long-handled squeegee for external glass.

Avoid paper towels and old newspapers. Paper towels often leave fibres on the glass, and newspaper ink can smear, particularly on uPVC frames.

The Best Method for Streak-Free Windows

The technique matters as much as the products. This is the method our cleaners use when tackling windows as part of a one-off clean or a more thorough deep clean.

Step 1: Remove loose dust and debris

Before you apply any liquid, use a dry brush or microfibre cloth to wipe away loose dust, cobwebs and debris from the glass and frame. This prevents you from turning dry dirt into a muddy smear when you add water.

Step 2: Clean the frames first

Always clean the window frame before the glass. Dirt from the frame will otherwise drip or brush onto clean glass. Use a damp cloth with a small amount of washing-up liquid, working from top to bottom. Rinse and wipe dry.

Step 3: Apply your cleaning solution

Dip your scrubber or microfibre sleeve into your bucket solution and wring out the excess so it is damp rather than dripping. Work across the glass using overlapping horizontal strokes, covering the full surface. Pay extra attention to the corners and edges where grime tends to collect.

Step 4: Squeegee from top to bottom

Starting at the top corner, pull the squeegee across the glass in a straight horizontal stroke. Wipe the blade with a clean cloth after each pass. Overlap each stroke slightly so you do not leave a band of water. Finish with a final vertical stroke down the edge to clear any remaining water.

Step 5: Dry the edges

Use a dry lint-free cloth to wipe around the edges of the glass and the sill. Water sitting in the corners is the most common cause of streaks once the window dries.

A note on timing

Avoid cleaning windows in direct bright sunlight. The solution dries too quickly on warm glass before you can squeegee it off, which causes streaks. An overcast day or early morning is ideal.

Common Window Cleaning Problems and How to Solve Them

Hard water marks and limescale

If you live in an area with hard water, you may notice a milky or chalky film on the glass, particularly on windows near bathrooms or kitchen areas. Ordinary washing-up liquid will not shift this on its own.

A diluted white vinegar solution works well on hard water deposits. Mix equal parts white vinegar and water in a spray bottle, apply to the affected area and leave for a few minutes before scrubbing gently with a non-scratch pad. Rinse thoroughly and squeegee as normal. For heavier build-up, a specialist limescale remover formulated for glass is a better option than a kitchen limescale product, which may be too strong for glazing.

Salt residue on coastal properties

Homes near the Norfolk and Suffolk coastlines face an additional challenge. Salt carried on sea air settles on glass and frames, leaving a white haze that becomes sticky and difficult to remove if it is left for too long. Properties close to the sea genuinely need their windows cleaned more frequently than inland homes, ideally every four to six weeks during spring and summer when winds are stronger.

For salt residue, warm water with washing-up liquid applied generously is usually effective. The key is not to let salt build up over several months, as it can eventually cause etching on glass if it sits in moisture repeatedly.

Our team covers a wide range of locations across the region. You can check our areas we cover to see whether we work in your part of Norfolk or Suffolk.

Paint spots and sticker residue

After decorating or renovation work, windows often end up with paint spots or adhesive residue from protective film. A plastic window scraper held at a low angle will lift dried paint from glass without scratching, provided you keep the blade flat and work slowly. Never use a metal scraper on coated or tinted glass. For adhesive residue, a small amount of white spirit on a cloth will dissolve most sticker glues. Wipe away the residue and then clean the glass as normal.

Condensation damage between double-glazed panes

If you can see misting or smearing between the two panes of double glazing, that is a seal failure. No amount of cleaning the outside of the glass will resolve this. It is a structural repair job and outside the scope of cleaning advice.

Cleaning Windows in Period Properties

Older properties in Norfolk and Suffolk often have original or early-replacement sash windows, leaded lights or windows with aged wooden frames. These need a more careful approach than modern uPVC or aluminium-framed windows.

Wooden frames

Avoid soaking wooden frames with water. Use a lightly damp cloth rather than a wet one and dry the frames promptly after cleaning. Water sitting in the joints of wooden frames accelerates rot and paint failure. If the paint on the frames is peeling, that is worth attending to before the next clean, as loose paint can scratch glass.

Leaded lights and small panes

The lead cames (the strips of lead between the glass pieces) can oxidise and develop a whitish bloom. A small soft brush is useful for working cleaning solution around the lead without putting pressure on the panes, which in older windows can be fragile. Avoid anything abrasive on the lead itself. A dry chamois leather works better than a squeegee on small panes because of the irregular shapes involved.

Original single glazing

Very old glass is often uneven in thickness and can have a slightly wavy quality. It scratches more easily than modern float glass. Use only soft cloths and avoid any abrasive pads or scrapers.

How Often Should You Clean Your Windows?

For most homes, cleaning internal windows every six to eight weeks is a reasonable routine. External windows may need attention every four to twelve weeks depending on your location, the season and how exposed the property is.

Properties in coastal areas of Norfolk and Suffolk, or homes surrounded by trees, will generally need more frequent cleaning than sheltered town-centre homes. After particularly stormy or dusty periods, it is worth checking whether the glass has picked up significant deposits.

If you are preparing a property for new tenants or carrying out end-of-tenancy cleaning, windows are one of the areas most likely to be picked up on an inspection. Our end of tenancy cleaning service includes thorough window cleaning as part of the process.

When to Ask Our Team to Help

Some window cleaning situations are best handled by our team rather than tackled alone. Upper-floor exterior windows, large expanses of glass in open-plan homes, or windows that have not been cleaned for a long time and have significant build-up all take considerably longer and require proper equipment to do well.

We also carry out window cleaning as part of broader one-off and deep cleaning jobs. If you are moving into a new home, carrying out a seasonal reset of the house, or preparing for guests, having the windows done as part of a full clean makes practical sense. Take a look at our home cleaning services to see the full range of what we cover.

If you have questions about what is included in a particular service or want to know more about how we work, our frequently asked questions page has straightforward answers to the most common queries we receive.