Cold draft
A draft near the sash or windowsill means either worn seals and hardware, or an installation seam that has lost its airtightness.
what we solve
Four reasons windows are usually replaced
Before naming a price, we find out exactly what isn't working now — this determines which profile and glass unit make sense to install.
Condensation and mould on the reveals
Moisture settles where the surface is colder than the room air. Fixed with a warmer glass unit and properly made reveals.
Noise from outside
A road under the windows or a yard with a playground — here an asymmetric glass unit with different glass thicknesses works well.
Expensive to heat
Heat constantly escapes through an old window. The lower the Uw heat transfer coefficient, the less money flies out the window.
energy efficiency
Where the heat goes and what keeps it in
A warm window isn't a single part but a chain: glass, gas in the chamber, spacer bar, profile, and installation seam. A weak link undoes the rest.
Uw 0,71,11.6 and above
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Number of chambers in the profile
A chamber is sealed air inside the frame. The more of them there are, and the deeper the profile, the slower the cold reaches the room.
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i-coating on glass
A transparent metal layer lets light in but reflects heat radiation back into the room.
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Argon in the chamber
Inert gas is denser than air and conducts heat less efficiently — the chamber performs better for the same volume of air.
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Warm spacer bar
A metal spacer around the perimeter of the glass unit is a classic cold bridge. A composite one removes the cold strip and edge condensation.
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Installation joint
Even the warmest window will freeze if the joint is just filled with foam. A vapour barrier inside and waterproofing outside — and the joint lasts for years.