T‑ClassicSlim Reno
A slim renovation window fitted directly over the existing old frame — replacement with no demolition. Warm, quiet and solid, built for years of everyday comfort.
A slim renovation window fitted directly over the existing old frame — replacement with no demolition. Warm, quiet and solid, built for years of everyday comfort.
Replacing worn-out windows with new ones
Optimised performance at attractive prices. Choose a system matched to your budget and expectations.
If your main goal is replacing old windows with new ones, sturdy and attractive, and the project is not subject to stringent requirements WT 2021, we recommend our BUDVAR T-Comfort or BUDVAR T-Classic ranges. These systems offer proven quality, good thermal and acoustic insulation and a wide choice of finishes at an attractive price. It is the ideal choice for anyone looking for reliable replacement windows that do not need to meet the very highest energy-performance figures, yet still come with a guarantee of durability and everyday comfort.
See what’s inside.
Corner cross-section of the T‑Classic Slim Reno profile: seven thermal chambers, steel core, EPDM gasket and double or triple glazing.
Seven chambers form an air barrier that limits heat and noise transfer.
A closed steel profile ensures rigidity and stability of large constructions.
Durable EPDM gaskets ensure tightness, quiet and protection from draughts.
Swisspacer warm edge and low-E glass — low Ug value.
Engineering
that works quietly.
Premium-class thermal insulation. Triple glazing with a Swisspacer warm edge spacer cuts heating bills by up to 30%.
* Uw value per EN ISO 10077-2 for a simple reference window measuring 1230 × 1480 mm with the option of standard triple glazing with a warm edge.
A 70 mm profile with steel reinforcement. Seven air zones block the flow of heat and noise.
Noise reduction. EPDM gaskets seal off sound bridges.
Hardware with anti-burglary mushroom cams and reinforced keeps in the standard version. Can be upgraded to RC2.
With triple glazing and a Swisspacer warm edge spacer.
Choose your package.
Each variant differs in the number of gaskets and the glazing unit. Choose the one that suits your building.
Super-warm
Triple glazing with a Swisspacer warm-edge spacer. Recommended for energy-efficient homes.
Common to all variants
Choose the right glazing for your needs
The glass is a key part of any window — it shapes thermal insulation, sound insulation and security. We offer 11 patterned designs as well as functional glazing (absorptive, reflective, sound-reducing, toughened and laminated).
Patterned glass designs· 11 designs
They provide privacy while letting plenty of light through (80–90%).
Other glazing types· 5 types
Functional glazing matched to specific needs — protection from sun, noise or break-ins.
Available colours
PVC foil coloured throughout or laminated, UV-stable — with a multi-year colour guarantee. Pick a colour and see the window come to life.
The colour swatches and product visualisations shown above do not fully reflect the actual colours or the real material structure — they are intended only as an indicative visual reference of the final result.
T‑Classic Slim Reno performs well in every room.
Compare with other uPVC models
Six core BUDVAR systems. Remove any models you don't want to compare — bring them back from the bar below.Scroll to see them all.
** Uw value per EN ISO 10077-2 for a simple reference window measuring 1230 × 1480 mm with the option of standard triple glazing with a warm edge.
Choose the right frame for your situation
The same slim T‑Classic Slim Reno system in three frames — new installation, no-demolition renovation and mounting in insulation.
Standard frame for new openings and typical window replacement.
No-demolition replacement — mounted on the existing old frame.
Profile for mounting in insulation — depths 105, 125, 145, 165 mm.
Download the BUDVAR T‑Classic Slim Reno catalogue
Full technical specification, design, available colours, accessories and energy parameters — all in a single PDF document ready to download.
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Frequently asked questions
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