Windows for your home in Hannover and Lower Saxony

Configure online · indicative price instantly · binding offer after measurement. PVC and aluminium, professional installation per RAL.

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VL-Innovativbau window installation in Hannover

Why VL-Innovativbau

Premium windows with Salamander BluEvolution & Siegenia TITAN

Real values, not promises — Uw down to 0.73 W/(m²·K), RC2 security, RAL installation.

Salamander BluEvolution 82/92

Premium profile system with 7-chamber technology, Pure-White surface, 200+ RAL colours.

Uw down to 0.73 W/(m²·K)

Triple glazing with warm-edge spacer. KfW Efficiency House 55 ready.

RC2 security

Siegenia TITAN AF fittings, mushroom-head locks, P4A security glass. Certified per DIN EN 1627.

RAL installation per ift

RAL Gütezeichen Windows + Installation. Our own teams — no subcontractors, no wage dumping.

BEG funding up to 20%

Funding-expert service: we extract the maximum from BEG individual measures + iSFP bonus.

10-year warranty

Twice the industry standard. Personally reachable years after installation.

Window types

From classic tilt-turn windows to floor-level lift-and-slide doors.

Tilt-turn windows

The standard for residential buildings. Custom-built with thermal and sound insulation.

Profiles: Aluplast, Veka, Salamander
Double or triple glazing
RC1 N to RC3 security

Fixed glazing

Maximum glass area, minimal profile — perfect for panoramic views.

Up to 6 m² glass area
Structural bonding available
Thermally insulated frames

Lift-and-slide doors

Floor-level sliding elements for terrace or balcony, quiet and barrier-free.

Up to 3 m element height
Low-threshold design
Comfort drives optional

Roof windows

Velux and Fakro — light sources under the roof. Installation includes flashing kit.

Manual or electric
Heat-protection blinds
Combinable with roof renovation

Floor-to-ceiling windows

Generous light, often combined with fixed glazing and sliding doors.

Maximum window opening
Integrated fall protection
Energy efficiency

Technical specifications

Standard and premium values for our window series.

U-value (Uw)	0.7 — 1.1 W/(m²·K)
Glazing	Double or triple thermal insulation
Sound insulation	Up to 45 dB (class 5)
Burglary protection	RC1 N · RC2 · RC3
Frame depth	70 — 86 mm, 5 — 8 chambers
Materials	PVC, aluminium, wood-alu (on request)

Exact values depend on profile, glazing and configuration. Binding statement after on-site measurement.

Our process

How we work

From first conversation to installation — five clear steps, one point of contact.

01
First conversation
Personal advice on site or by phone. We listen — no sales talk.
02
Measurement
Precise on-site measurement by our master craftsman. Every opening individually surveyed.
03
Fixed quote
Detailed offer with specifications and fixed price. No hidden costs.
04
Installation
RAL-certified installation per the ift Rosenheim guideline. Our own teams — no subcontractors.
05
Warranty & service
Up to 10 years warranty. Reachable after handover — personal, reliable.

Our window projects

Photos from real installations in Hannover and Lower Saxony.

Up to 20% funding for window replacement

BAFA grant up to €12,000 per residential unit + proKlima Hannover up to €3,000 extra. We check your eligibility and help with the paperwork.

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Frequently asked questions about windows

How long does window replacement take in an apartment?+

We allow about 60–90 minutes per window. A 3-room apartment with 5–6 windows is usually done in one day. We cover the floor and clean up afterwards.

Which Uw value is required for BAFA funding?+

For BAFA/BEG funding the window Uw must be ≤ 0.95 W/(m²·K). All profiles we offer (Aluplast Ideal 7000, Veka Softline 82, Salamander) safely reach this value.

Can you also offer heritage-compliant windows?+

Yes. We work with muntins, historical profiles and wooden windows on request. For listed buildings, special proKlima funding is also available (up to €10,000).

Will interior finishes (wallpaper, plaster) be damaged?+

Generally not — we use precise dismantling and protect walls and floors. If wallpaper sticks to the frame, small touch-ups may be needed, which we agree in advance.

How long is the warranty?+

5 years on profile and glazing, 2 years on installation (statutory). Wear parts (seals, fittings) are regulated separately.

What is the usual delivery time?+

4–8 weeks after order placement and measurement, depending on profile and season. Express delivery available for a surcharge.

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