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Two quotes are sitting on your kitchen table. One says uPVC. The other says aluminum. The brochures look equally glossy, and nobody has explained in plain words which one is right for your house.
That is a very normal place to be. Frame material is one of the first decisions in a window project, and the one people feel least equipped to make.
Here is the good news: you are not choosing between a good option and a bad one. Both are established frame materials, and DiVetro offers both as European window systems. What matters is which one fits your rooms, your budget, and the look you have in mind. This guide walks you through it in everyday language.
First, a reassurance: the glass is a separate choice
Before comparing frames, here is something that takes pressure off the decision. DiVetro's Low-E insulated glass is standard across its systems, in double or triple pane, and the sound-reduction option (up to 42 dB for the dedicated soundproof triple-pane unit) is listed for the window as a whole, not tied to one frame material. Choosing uPVC or aluminum does not mean giving up good glass.
Think of a window as four parts working together. The frame decides how the window feels to the touch, how it looks from the street, how much glass you can have, and how it ages. The glass, the seals, and the installation matter just as much for your comfort, so compare complete quotes, not just frame names.
multi-point lock
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uPVC: the warm, easy-living choice
uPVC is a rigid, durable plastic that is naturally poor at conducting heat. DiVetro's advanced uPVC systems add multi-chamber profiles: hollow compartments inside the frame that act as extra barriers against heat loss. Picture the still air in a thermos.
Why people choose it
Warmer frames, calmer rooms.
More chambers mean more barriers between the warm inside and the cold outside. Balance Pro has five chambers. Thermo Ultra has six and is made for projects where thermal performance is a particular priority, such as a cold-winter home or a bedroom that never warms up.
Easy upkeep.
uPVC frames do not need painting and resist moisture well. Weekends stay yours.
Color and character.
The finish chart runs from Structural White and Anthracite to Jet Black and wood-grain looks such as Natural Oak, Golden Oak, and Walnut. You can have the warmth of timber without the sanding and repainting.
Value that does not feel like a compromise.
DiVetro describes Balance Pro as the system for "the smart homeowner seeking premium European quality and a clean look while maintaining a strict project budget."
Aluminum: the slim, bold, view-first choice
Aluminum is strong and light, and that strength is its superpower. A slim aluminum frame can hold a large pane of glass, which is why aluminum is the material of open-plan living and floor-to-ceiling views. DiVetro describes its aluminum systems as allowing "massive glass spans and floor-to-ceiling views."
Why people choose it
Slim sightlines.
With Alu Minimal and Slim Aero, the frame fades back and the view takes over. That suits modern homes, large windows, and designs that connect indoors with the garden.
Room for big glass.
More daylight, wider views, fewer interruptions in the line of sight.
Strong and nearly maintenance-free.
The U.S. Department of Energy describes aluminum frames as very strong, light, and almost maintenance free.
A finish for every style.
Solid colors such as Matt Anthracite and Silver Brushed Alu, plus a long list of wood-grain finishes.
What is inside the frame
This is why the frames behave differently. uPVC slows heat with chambers. Aluminum slows heat with a thermal break. The drawings are simplified and not to scale.
Side by side
Here is the comparison on one page. Keep it handy when the quotes arrive.
Swipe the table to compare both materials.
| uPVC | Aluminum | |
|---|---|---|
| Warmth | Multi-chamber profiles (5 or 6 chambers) slow heat through the frame | Needs a thermal break; Alu Energy is thermally broken |
| Look | Classic to contemporary, with many colors and wood-grain finishes | Slimmest sightlines, crisp architectural lines |
| Big glass | Everyday sizes up to generous patio-door openings | Built for the largest spans and floor-to-ceiling views |
| Upkeep | No painting needed, resists moisture | Strong and almost maintenance-free |
| Finishes | Solid colors and wood-grain, from white to near-black | Solid colors and a long list of wood-grain finishes |
| Budget | The value route; Balance Pro is built around a strict budget | Often chosen for design-led projects; priced by size and system |
| Warranty | 5 years on windows | 5 years on windows |
| Best for | Warm bedrooms, renovations, budget-smart projects | Living rooms, views, modern architecture |
Pricing depends on system type, customization, measurements, glass specification, and installation complexity, so the only reliable comparison is a quote for your own windows.
Which one fits your room?
You can also decide room by room. Start with what you want each space to do for you.
Multi-chamber frames, no painting, strong value
Strength for large spans and the slimmest sightlines
Each window is specified on its own. Ask us what fits
Each window is specified on its own, so it is worth asking whether a combination makes sense for your house. We will also check that frames seen together look consistent from the street and from inside.
If this sounds like you
| You say… | We would start with… |
|---|---|
| "We are renovating and watching the budget." | uPVC, Balance Pro. A five-chamber profile with premium European quality at a strict-budget price point. |
| "The bedroom is always the cold one." | uPVC, Thermo Ultra, with triple-pane glass. Six chambers for the frame, and a glass U-factor of 0.12 against 0.19 for double pane. |
| "We are building a modern home with a view." | Aluminum, Alu Minimal or Slim Aero. Slim sightlines and room for large glass. |
| "I love the look of wood, but not the upkeep." | uPVC wood-grain finishes. If you want the real thing, ask about Naturo solid wood or Naturo Clad, wood inside with aluminum outside. |
Six questions to ask before you sign any quote
Whoever you buy from, these six questions protect you from comparing apples with oranges.
- Is the thermal performance figure for the whole window, or just the glass?
The U-factor that counts is the one for the complete window.
- Is the aluminum frame thermally broken?
If the answer is a pause, keep asking.
- How many chambers does the uPVC profile have?
Five and six are different products.
- What glazing is included?
Double or triple pane, Low-E, and any acoustic option should be written down.
- Have the openings been measured on site?
Accurate measurements prevent the most expensive mistakes.
- Who installs, and what does their warranty cover?
Product and installation warranties are separate.
Peace of mind: the product warranty is the same for both
DiVetro's product warranty runs 5 years on windows in both uPVC and aluminum (2 years on doors). It covers the durability and color stability of the profiles or finished surfaces, the strength of structural joints, the continued function of core hardware, and the seal integrity of insulated glass, including moisture forming between the panes.
So you can choose on looks, comfort, and budget, without wondering whether one material is the riskier bet. Two practical details: report visible external damage within 14 days of purchase or delivery, and accepted claims are typically serviced within 30 days.
The product warranty does not cover installation. Installation coverage comes from the installer or installation company responsible for the work, so ask for it in writing.
The easiest way to decide
Tell us which windows you are replacing and ask to see them in both materials. We will help you choose the material, glazing package, and hardware, and you will receive a clear project breakdown, specifications, and a precise cost estimate. We install in the New York area and supply projects nationwide.
Pick the frame that suits the room, and let the glass and the installation do their part. Whichever material you choose, the right window is the one you stop thinking about, because it simply works.
Let's find the right frame for your home.