Window insulation
Cold windows in winter or a draught through the frame? Our specialists eliminate heat loss by replacing seals, sealing joints and filling with insulating material. We work with PVC, wooden and aluminium windows.
Order this serviceWhat's included
- Checking and replacing seals
- Sealing joints with silicone
- Filling with assembly foam for insulation
- Checking the frame and glass unit
- A draught check after the work is completed
Price list by material
Prices vary by window material. Choose your type:
| Service | Price |
|---|---|
| Seal replacement (1 window) | €20–30 |
| Joint sealing (1 window) | €15–25 |
| Full insulation — 1 window | €30–50 |
| Full insulation (flat up to 6 windows) | €110–145 |
| Commercial projects | by quote |
* For PVC windows, insulation usually includes seal + sealing + adjustment.
| Service | Price |
|---|---|
| Seal replacement (1 window) | €25–40 |
| Joint sealing (1 window) | €20–35 |
| Full insulation — 1 window | €40–70 |
| Full insulation (flat up to 6 windows) | €140–185 |
| Commercial projects | by quote |
* Wooden windows often also need lubrication and extra foam filling between the frame and the wall.
| Service | Price |
|---|---|
| Seal replacement (1 window) | €30–45 |
| Joint sealing (1 window) | €25–40 |
| Full insulation — 1 window | €50–80 |
| Commercial projects | by quote |
* For aluminium profiles, special temperature-compensation seals are used.
Frequently asked questions
Why do windows get cold in winter?+
How can I find where a draught comes from myself?+
Can insulation replace installing new windows?+
How much can I save on heating after insulation?+
What does “full insulation” of one window include?+
Specialist advice
Quick diagnostics before the season
The candle test — find a draught in 2 minutes with no special tools
Light a candle or use a lighter and slowly move it around the entire perimeter of the window — between the sash and the frame, along the whole edge, and at the join between the windowsill and the wall. If the flame flickers or goes out, that is where the draught is. Mark the spots and call a specialist for an accurate diagnosis and solution before the cold weather arrives.