Roof window replacement at a fixed price
Complete from €1,524 — incl. VAT, installation, disposal & flashing
Example: smallest size 55x78 cm, 1 window; final price in the configurator
Digitally simple, personally supported
Instant price by AI
Upload a photo, see the price, order directly
Advice from the master roofer
Individual advice including a discount check
Your safeguards at a glance
- 5-year installation warrantyWe give you a written warranty on the installation work we carry out.
- 10-year VELUX manufacturer warrantyVELUX grants it on roof windows including insulating glazing and on the flashing.
- Master roofer check before confirmationA master roofer reviews every order before we confirm it.
- Direct line to the master rooferPhone, WhatsApp or email — you talk to the specialist firm itself.+49 1590 1146662WhatsAppflorian@dachfenster.one
- Digital project trackingOrder status, appointments and claim handling all run digitally.
- Instalments and secure paymentYou choose how to pay when you place the order.Klarna instalmentsCredit cardPayPalInvoice by arrangement
The easiest way to a new VELUX roof window
1:1 replacement at a fixed price
Do you want to replace your old VELUX roof window but dread the drawn-out process of site visits and unclear cost estimates? Dachfenster.one reinvents roof window replacement.
How the digital roof window replacement works
Upload a photo
Simply photograph the type plate of your current VELUX window.
Configure
Choose your new model (e.g. polyurethane or timber window, triple glazing).
Get a fixed price
You see the final price straight away, including all materials and professional installation.
Order
Complete your purchase directly online. We take care of the rest.
Wait for the order confirmation
We get in touch promptly to arrange the installation date with you.
Sit back and enjoy
Enjoy your new window and save a lot of heating energy from now on :-)
Why dachfenster.one?
Replace your roof window without any stress – clean, fast and at a fixed price.
Your new roof window in four steps
📸 Type plate
Photograph the type plate of your old window or upload it directly.
🤖 See the fixed price
Our AI recognises the model immediately and shows you the binding all-in price.
🛒 Order directly
Order your replacement window including installation in a single click. No quote needed.
📅 Choose a date
We contact you promptly about your preferred installation date.
Convenient payment • Financing via Klarna
Everything included. No surprises.
Our fixed-price promise holds.
Complete package
Services included- Professional removal of the old window
- Delivery of the original VELUX roof window
- Installation to VELUX specifications by a master roofing company
- Interior lining connection to the existing structure
- Handover protocol & warranty
- Disposal of the old window
Works to be provided on site
Transparently not part of the price- Changing the roof opening (rafter modification)
- Lifting platform or scaffolding (if the roof cannot be reached from outside)
- Painting and drywall work indoors
On top of that, our triple-glazing packages with Uw ≤ 1.0 are eligible for BAFA funding (BEG EM) — the heat-protection glazing --69 with Uw 1.1 is not. That usually pays off from 3 windows upwards.
Transparent volume discounts
With several windows you benefit automatically:
Discounts are applied automatically in the basket — no voucher code needed.
We replace roof windows in your region
Master roofing company based in Syke, south of Bremen — with a fixed price online and a master roofer’s check before you order. Choose your location for local details, house types and prices. The local pages are available in German only.