What makes Comp Door composite entrance doors stand out in the market?

Comp Door composite entrance doors are renowned for their expert engineering, combining years of experience to deliver a premium product with market-leading performance, a competitive price, and crafted using the finest components.

How many colour combinations are available for Comp Door composite entrance doors?

Comp Door offers an impressive range of over 250 colour combinations for both the interior and exterior, providing unparalleled customization options.

What is the u-Value of Comp Door composite entrance doors, and why is it important?

Comp Door composite entrance doors have an outstanding 1.4 W/m²K u-Value, indicating excellent insulation properties and better thermal efficiency.

Can you describe the security features of Comp Door composite entrance doors?

These doors feature a highly advanced secure locking system, locks compliant with PAS24: 2016, and an ABS security cylinder as standard, ensuring maximum safety.

Are there different frame styles available for these doors?

Yes, Comp Door provides options for either chamfered or sculptured frames, allowing for a choice that complements your home’s architecture.

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Smart Window System

Kubu Smart Security

Name: Comp Door
Brand: Emerald Windows and Doors
Rating: 5 (682 reviews)

The Kubu system lets you check if your windows are open, closed or locked, all from the app on your phone. This gives you simple, straightforward peace of mind.

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Kubu Smart Window Security from Emerald Windows

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Kubu smart window security gives you a clear, practical way to check your home at a glance. At night, a sudden loud bang can send your thoughts racing to the possibility of a break-in. With Kubu-enabled windows, you can check instantly and you’ll be alerted the moment excessive force is applied to a window, signalling an attempted break-in.

Before you leave your home – to go out for the day or on holiday – instead of walking from room to room, you can see whether compatible windows are open, closed or fully secured directly from the app.

Emerald is currently the only installer within our catchment area offering Kubu-enabled windows, bringing smart security to your home.

Why Choose Kubu Smart Window Security from Emerald?

Kubu is built into compatible window hardware, rather than being added on afterwards. That means no visible sensors and no compromise on the appearance of your window.

Window Status Check

Check your windows instantly through the app without leaving your seat.

Bedtime Reassurance

Confirm your windows are locked once you are settled in.

Away From Home

Check status while travelling or when you are out.

Activity History View

See when your windows have been opened or locked.

Shared Home Clarity

Useful for families, rentals and multi-occupancy homes.

Smart Home Connection

Works with selected systems through simple smart integrations.

Integrated clean design

Sensors are hidden within the window frame for a neat finish.

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a hand checking a phone containing Kubu app

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Discover smarter window security with Emerald and Kubu

Take control of your home with Kubu smart window security from Emerald. Built into compatible window systems, it keeps watch in the background, delivering real-time updates without changing how your windows look or work.

Using the app on your phone, check every window before bed, before you leave or while you’re away, for clear, instant reassurance. It’s especially valuable for ground floors, sudden weather changes or homes with multiple rooms to keep track of.

For landlords, Kubu offers a reliable way to confirm windows are being used properly, meeting security expectations easily.

As the only local installer offering Kubu-enabled windows, Emerald brings a smarter way to protect your home.

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Quality Smart Windows for Homeowners

Kubu adds a new level of visibility to compatible windows, helping you manage your home with confidence day to day. It is a thoughtful upgrade for modern living, whether you are at home or away.

Speak to Emerald about adding Kubu smart window security to your new windows or as part of your next project. Arrange a quote or book a home visit today.

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What Does Kubu Window Security Do?

Through the app, you can:

Check whether your windows are locked or unlocked
View live status at any time
Review activity history for added visibility
Activate SureShield monitoring when needed
Connect with selected smart home systems or use it independently

With Emerald, every installation is handled with care, so the system works reliably from the start. It is a straightforward way to remove doubt around your windows.

Kubu Smart Window Security Questions Answered Here

Welcome to our FAQ section on Kubu smart window security. We've compiled key questions to help you understand how it works and why it is a valuable addition to modern homes.

What does Kubu show for windows in everyday use?

Kubu provides real-time updates through the app, showing whether a window is open, closed or fully secured. It also records activity history, allowing you to check when windows were last used without needing to inspect them manually.

Can Kubu support landlords and property compliance needs?

Yes. Kubu offers a clear activity record, helping landlords confirm that windows are being opened for ventilation and secured correctly. This can support responsible property management while also giving reassurance that the home is being looked after.

Does Kubu work without a full smart home system installed?

Yes. Kubu works perfectly as a standalone system through its dedicated app. You can check window status, receive alerts and review activity without needing any other smart home technology in place.

What is SureShield monitoring and how does it help?

SureShield is an optional alert feature that you can activate whenever needed. It notifies you if a window is opened, unlocked or experiences unusual force, helping you stay informed without constant checking.

Can I check my windows when I am away from home?

Yes. With the Kubu hub, you can view the status of your windows from anywhere. This is useful when travelling or during long periods away, giving you confidence that everything is as it should be.

What our customers are saying

We pride ourselves on the hundreds of customer reviews that we have collected over our many years of trading. Why not read some of our testimonials yourself, and see how our customers have rated their experience with our service.

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Replacing patio door with a window

Emerald windows were brilliant. The patio door was removed and replaced with a window. All work was carried out from bricking up the outside to plastering the inside. Great work...

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Lesley B

Local Family Friendly Company

We worried about choosing a window company. We looked at all the usual national firms but we preferred the feel of a smaller local family run business as the rep...

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Stephanie C

Very Pleased

Very pleased with the whole process from Mark letting us see and touch the product in the showroom in Swindon (many don't!), to a transparent price breakdown, no "buy now...

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Casey Collins

Highly Recommended

Highly recommend Emerald Windows and Doors; new Front and back doors fitted yesterday. Cannot praise Mark the Fitter enough, courteous, friendly and very helpful. Top job with attention to detail...

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Michelle Webb

Emerald Windows – A Quality Product

Emerald windows have just installed a new composite front door to our property. We are very pleased with the product and the installers were polite, professional and have carried out...

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Richard K

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Areas we serve

Swindon-based family run double glazing installers

With a head office in Swindon, a short trip from the motorway, we are ideally located to offer our services across Wiltshire, Reading, Bath, Bristol, Marlborough, Berkshire, Gloucestershire, Oxfordshire, and other surrounding locations.

Emerald provide and install home improvements in all materials – uPVC, aluminium and traditional timber. No matter what material you choose, you can be sure we’ll provide you consistent quality – our work is always finished to the highest standards, whether you’re installing 2 windows or 20!

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News from Emerald

Why not read through some of our informative blogs, written in the aim of answering frequently asked questions on all things home improvement related.

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Advice

Practical guide to reducing heat loss and lowering energy bills

July 1, 2026

With household energy costs remaining a major concern for families across the UK, finding practical ways to manage consumption has never been more important. While many homeowners focus on turning down the thermostat or changing daily habits, the real driver...

Advice

Choosing the right window frame for your home

June 25, 2026

When planning new windows for your home, the frame material you choose has a far greater impact than most homeowners realise. Beyond simply holding the glass in place, your window frame directly affects how well your home retains heat, how...

Advice

Simple ways to keep your home cooler during hot weather

June 16, 2026

A room that feels cosy in winter can quickly become unbearable when hot weather comes along. When warm weather arrives, many homes can start to feel stuffy, bright, and difficult to relax in. Bedrooms become harder to sleep in, conservatories...