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Retrofit sealing strips for historic windows and doors
€14,90
Unit price
€13,55/m
The Dichtungsklick sealing strip is a straightforward solution for retrofitting old wooden windows with an effective seal. When the window is closed, the sash presses against the silicone seal, noticeably reducing draughts, cold air and outside noise.
The strips are supplied in fixed lengths and can be cut to size using standard tools. Ideal for anyone who wants to seal their windows themselves—without drilling or damaging the window frame.
How it works
- Wooden strip with integrated silicone seal
- Mounted using strong 3M adhesive tape
- When closing the window, the sash seals directly against the silicone
The result is a tighter window, with no visible changes from the outside.
Suitable for
- Old wooden windows, especially historic (Altbau) and box windows (Kastenfenster)
- Rental apartments, as no permanent modifications to the window are required
- Historic buildings without retrofitted exterior wall insulation
- Renovation measures with fast amortisation
Key benefits at a glance
- Noticeably reduced draughts and improved thermal insulation
- Reduction of street noise
- No drilling, no screws, no damage to the window frame
- Removable without residue
- Cost-effective alternative to full window refurbishment
The character and appearance of historic windows are fully preserved.
Ordering information
- Supplied in 1.1 m wooden strips
- Cutting to size is done by the customer on site
Why Dichtungsklick?
Dichtungsklick was developed specifically for retrofitting old wooden windows. Instead of a full window renovation, the system offers a simple, reversible solution for greater living comfort, reduced energy loss and quieter interiors. Particularly suitable for historic apartments where preservation and functionality are equally important.
How many strips do I need?
Use our calculator to determine how many strips you need for your windows. Even rough estimates are sufficient.
Pickup currently not available
Shipping & Returns
- Cancellation & Return: As these are custom-made items, they are excluded from exchange and cancellation (§ 312g para. 2 no. 1 BGB).
- Standard products: For regular stock items, you have the statutory 14-day right of return.
Delivery times
Custom-made items require up to 14 days for production . We ship items from stock within a few business days .
Should it take a little longer, please bear with us. We are a small family business and do our best to process all orders as quickly as possible.
Scope of delivery
Wooden strips fitted with adhesive strips; silicone sealant for cutting to size.
materials
- Wood: Spruce or pine, carefully primed – can be painted directly.
- Seal: professional silicone seal – flexible, durable and ensures optimal sealing.
- Adhesive tape: strong 3M industrial adhesive tape – permanently secure, removable without residue if required.
What’s in it for you?
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Reduced heat loss through the subsequent sealing of old windows.
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Lower heating requirements in typical older apartments. Noticeable from the first winter.
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Less road noise. Simply thanks to an invisible silicone seal.
This is how Dichtungsklick works.
Our custom-made sealing strips with professional silicone sealant make old windows and doors airtight again – without drilling, without screws, and without altering the appearance. Simply stick them on, and you're done. This way you save on heating costs, protect your home from street noise and drafts, and maintain the comfort of a modern window – at a fraction of the cost of a new installation.
Are my windows suitable for Dichtungsklick?
Dichtungsklick was developed for wooden windows, which are still found in many older buildings. If you're unsure, send us a photo of your windows via WhatsApp.
Do I need my landlord's permission?
No! Since no drilling or similar is required on the window frame for installation and the strips can be removed at any time, Dichtungsklick is also ideal for tenants.
Here's what our customers say:
Before
After
Virtually invisible.
Our seal sits where you'd hardly notice it – inside the inner frame of your window. The narrow strip of real wood blends seamlessly into the existing window and remains virtually invisible when closed. Its delicate shape and natural surface make it look like part of the original – no plastic, no foreign element, no visual compromises. Just more peace and quiet, less cold, and a window that looks the same as always – only better.
For a restful sleep.
Street noise often penetrates living spaces through old, leaky windows, especially in older apartments on busy streets. The additional silicone seal reliably closes the gap between the window sash and frame, significantly reducing traffic noise. The result: a quieter indoor climate, less disruptive noise, and restful sleep. Ideal for bedrooms. This way, the charming look of the old windows is preserved while bringing the tranquility of a modern new building.
Less particulate matter.
Leaky windows not only let in cold air and noise, but also fine dust from the outside air – especially in apartments located on busy streets. The additional silicone seal closes even the smallest gaps in the window frame, significantly reducing the ingress of dust particles and exhaust fumes. This ensures cleaner indoor air and a healthier living environment – a noticeable difference, especially in children's rooms or for families with young children.
Easy installation
Whether you're all thumbs or a DIY expert - anyone can install Dichtungsklick!
A few minutes
Installation takes only a few minutes per window. And just like that, your windows are sealed!
No drilling required
Thanks to modern adhesive technology, you don't need to drill any holes in your frame. Ideal for renters!
Removable
The strips can easily be removed again without damaging the window frame.
The solution you've been waiting for
For a completely new living experience within your own four walls that you won't want to do without!
Significantly reduces heat loss
Significantly less road noise
No permit required
Quick installation
Windows close well
Lasts for many years
Cost
Foam tape
€
Dichtungsklick
€€
New windows
€€€
Foam tape
Significantly reduces heat loss
Significantly less road noise
No permit required
Quick installation
Windows close well
Lasts for many years
Cost
€
Dichtungsklick
Significantly reduces heat loss
Significantly less road noise
No permit required
Quick installation
Windows close well
Lasts for many years
Cost
€€
New windows
Significantly reduces heat loss
Significantly less road noise
No permit required
Quick installation
Windows close well
Lasts for many years
Cost
€€€
Is my window suitable?
Are you unsure whether Dichtungsklick is suitable for your windows?
Simply send us a photo of your windows via WhatsApp – we will get back to you promptly with an assessment of whether and how we can help you to reliably seal your windows.
Is it worth it?
Beispielrechnung für eine 80m² Wohnung.
- Verbrauch (112 kWh/m²): 8960 kWh/Jahr
- Heizkosten aktuell: €1.075,20 / Jahr
- Einmalkosten Dichtungsklick (4 Fenster): €560,00
0,00 €
Deine jährliche Ersparnis
+
A warm apartment
No draft
Less road noise
Less particulate matter pollution
questions and answers
Measure
How do I measure correctly?
For Dichtungsklick, you need the inside measurement of your interior window. Measuring is quick and easy with a few tricks. You can find our instructions here.
I've mismeasured myself - what now?
No problem! Just contact us directly. Together we'll find a solution. If a strip is completely unsuitable, we'll send you a suitable one free of charge.
Do I need to measure before ordering?
No. You can easily submit your window measurements after you've ordered the trim. After we receive your order, we'll send you a form where you can enter your window measurements.
Assembly and application
How is Dichtungsklick attached?
The strip is glued directly onto the window frame using high-quality double-sided adhesive tape – without any drilling or screws.
Can I install Dichtungsklick myself?
Yes, self-installation is easily possible with simple wooden windows and box-type windows. Instructions are included.
How long does the installation take?
Depending on the window size, installation takes approximately 5 to 30 minutes per window. The first window usually takes a little longer, but once you get the hang of it, the subsequent windows go faster.
Do I need any special tools?
No. You only need a clean cloth to clean the frame. Ideally, very fine sandpaper and acetone or other alcohol to degrease the adhesive surface.
If you are not ordering the strips to measure, you may need scissors and a saw, ideally also a miter gauge, to cut the strips and seals to length.
Heat, noise and comfort
How much energy can I save with Dichtungsklick?
Depending on the condition of the windows, savings of up to 20% on heating costs are possible, as drafts and heat loss are significantly reduced.
However, this depends heavily on the condition and quality of your windows, their correct installation, and other factors in your apartment.
Does Dichtungsklick also help against road noise?
Yes, Dichtungsklick can reduce sound transmission by up to 50% – especially noticeable in single-glazed windows in older buildings.
Could the seal promote mold growth?
No – if you ventilate properly. The improved airtightness makes short bursts of ventilation more important. This prevents condensation from forming in the frame and becoming trapped inside the apartment due to the better seal. At the same time, the improved seal prevents cold drafts, which can also lead to mold growth.
Compatibility and disassembly
Do I need my landlord's permission for the installation?
Generally, no. Dichtungsklick is installed without drilling or screws and can be removed without leaving any residue. Therefore, the measure is considered a minor alteration under current legal precedent.
Such measures do not permanently affect the structure or appearance of the apartment and can be reversed without damage. Therefore, they are considered part of the contractual use of the rented property (§ 535 BGB) and generally do not require the landlord's consent. If in doubt, it is advisable to briefly notify the landlord of the planned measure in writing – however, approval is usually not necessary.
Is Dichtungsklick suitable for all windows?
Dichtungsklick is optimized for classic wooden frame windows, especially older windows with single or double sashes. The system is not designed for plastic frames.
Feel free to contact us via WhatsApp or our contact form and send us photos of your windows. This will allow us to assess whether our system is suitable. Often, one of our other systems, which we sell on a case-by-case basis, will be a better fit.
Can I remove Dichtungsklick without leaving any residue?
Yes, the adhesive tape used can be removed without damaging the frame – ideal for rented apartments.
This, however, requires that the frame is in good condition before installation and is handled with care during use. Additionally, removal must be carried out carefully and thoughtfully. For example, a cutting wire and adhesive remover can be used for removal.
Does this also work for listed buildings?
Yes, because nothing is drilled or screwed in, and the appearance of the window remains completely intact.
From good hands.
As a small family business with artisanal roots, we place great value on quality. Every order is carefully handcrafted and then shipped directly to your home.