If you're considering upgrading your conservatory roof, you've likely come across the term U‑value. But what does it really mean — and why should you care if your new roof has a U‑value of 0.15?

What is a U‑Value?

A U‑value (also known as thermal transmittance) measures how well a material allows heat to pass through it. In simple terms:

The lower the U‑value, the better the material is at insulating.
The higher the U‑value, the more heat escapes — costing you more in energy and comfort.

U‑values are measured in W/m²K (watts per square metre per degree Kelvin). A U‑value of 0.15 means that only 0.15 watts of heat are lost per square metre of material for every degree of temperature difference between inside and outside.

Why U‑Values Matter for Your Conservatory

Conservatories are naturally exposed to temperature extremes — often freezing cold in winter and overheating in summer. Traditional roofing materials like glass or polycarbonate tend to have very high U‑values, meaning they allow heat to escape quickly and do little to regulate internal temperatures.

Here’s how they compare:

Roof Type	Typical U‑Value (W/m²K)
Old polycarbonate roof	1.6 – 2.4
Standard double-glazed glass	1.2 – 1.5
Tiled conservatory roof (ours)	0.15

Why 0.15 Is the Gold Standard

At Conservatory4you, we build our tiled conservatory roofs with a timber structure, multi-layer insulation system, and professional plaster or UPVC finishes. This allows us to achieve a U‑value of just 0.15 W/m²K — one of the best in the industry.

What does that mean for you?

✅ Cosier winters – retain indoor warmth without cranking the heating
✅ Cooler summers – prevent excess heat build-up in sunny weather
✅ Lower energy bills – less heat escaping = reduced heating costs
✅ Less condensation – thanks to consistent internal temperatures
✅ Greater property value – energy efficiency is a key selling point

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Why Choose a Tiled Roof Conservatory?

Choosing a tiled roof for your conservatory is a smart upgrade with lasting benefits. To start, it greatly improves insulation, making the space warmer in winter and cooler in summer. As a result, you can enjoy your conservatory comfortably all year round.

In addition, tiled roofs reduce noise from rain and glare from the sun, creating a calmer, more relaxing space. Furthermore, the improved energy efficiency can help cut heating costs. Because of this, you save money while boosting comfort.

On top of that, tiled roofs are low-maintenance and more durable than traditional options. From a design point of view, they also blend beautifully with your home’s exterior. Ultimately, this upgrade adds style, value, and practicality—all in one.

We have years of expertise in all aspects of conservatory roof installation. Our roof solutions increase the comfort of life and add value to our customers’ homes from the very beginning.