One of the most common mistakes in home renovation is leaving windows and doors to the last minute. Many homeowners focus on paint, tiles, and kitchen cabinets first, and only think about windows when the walls are already up. By then, it is often too late to get exactly what they want.

This guide explains when you should start thinking about windows and doors, why timing matters, and what happens if you leave it too late.

The right time to start

The best time to start thinking about windows and doors is before any building work begins. Even if you are just replacing old windows, the earlier you start the process, the smoother everything else will go.

Windows are not off-the-shelf – Unlike a tap or a light fitting, windows and doors are usually made to order. They are custom-built to fit your specific openings. This takes time — often several weeks.

They affect everything else – The size and position of your windows affect tiling, plastering, painting, and even furniture placement. If you change your mind about windows halfway through, it can delay the whole project.

Installation needs planning – A good installation team needs to coordinate with other trades. If the windows are not ready when the wall openings are done, the whole site stalls.

What happens if you leave it too late

Delays – The most common outcome. You wait weeks for custom windows to be made, and nothing else can move forward until they are installed.

Compromises – You might have to settle for a standard size that does not quite fit, or a design that is not exactly what you wanted, simply because there is no time to wait for custom orders.

Rushed decisions – When you are under pressure, you are more likely to make poor choices. You might pick the wrong glass, the wrong frame colour, or the wrong type of window for your needs.

Higher costs – Rushed orders often cost more. Express manufacturing and expedited shipping add to the bill.

What to decide early

Window type – Casement, sliding, awning, or fixed. Each has different space requirements and opening styles.

Frame material – Aluminium, timber, or uPVC. Each has different maintenance needs and lifespan.

Glass type – Single, double, or triple glazing. Low-E coating for heat control. Laminated or toughened glass for safety.

Colour and finish – Frame colour should be decided early so it matches your overall design scheme.

Opening direction – Which way should the window open? This affects furniture placement and ventilation.

How ALWEW helps

ALWEW makes the process simple. We guide you through every step — from choosing the right window type to measuring, ordering, and installation.

Our windows are custom-made to fit your home perfectly. We offer a range of frame colours, glass options, and smart electric controls.

We also work with local installers who understand the importance of timing. They will coordinate with your contractor to make sure everything arrives and is installed on schedule.

A final word

Windows and doors are not an afterthought. They are one of the first things you should decide on in any renovation project. Start early, plan carefully, and you will save yourself time, money, and stress.

Need help planning your project? Contact us. We can walk you through the timeline and help you make the right choices from the start.