Window & door restoration

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Window restoration is one of the cornerstones of our workshop. We have a dedicated team specialising in the restoration of historic windows and doors, combining traditional craftsmanship with carefully selected materials to preserve the architectural character of each building. In most cases, restoring original windows is both a more sustainable and a more cost-effective solution than replacing them.

We follow established conservation principles, treating every window individually according to its condition and historic significance. All windows are painted by hand using traditional linseed oil paint and glazed with linseed oil putty. Whenever possible, we preserve the original glass, as historic glass is an essential part of a building’s character and is often of exceptional quality. Where replacement is necessary, we keep both drawn and mouth-blown glass in stock to ensure an authentic restoration.

Where appropriate, we can also improve thermal performance without compromising the building’s historic appearance. One option is the installation of vacuum-insulated glazing in the inner sash, providing significantly improved energy efficiency while preserving the original exterior. This solution is particularly suitable for heritage buildings and historic entrance doors.

Every project begins with a thorough condition survey to assess the windows or doors and determine the necessary restoration work. Based on this assessment, we prepare a detailed work specification and cost estimate, giving property owners a clear understanding of the required work and allowing projects to be prioritised or completed in phases where appropriate.

Before restoration begins, every sash is carefully documented and measured. In most cases, the window sashes are removed and transported to our workshop, where the restoration is carried out under controlled conditions. Repairs to the window frames are completed on site while the sashes are being restored.

During the restoration period, the window openings are protected with weather-resistant temporary screens that continue to admit natural daylight into the building. The window sashes are typically away from the property for approximately three weeks, including the necessary drying time for the linseed oil paint.

By combining traditional craftsmanship, specialist knowledge and conservation best practices, we restore historic windows and doors for generations to come while preserving the architectural integrity and cultural heritage of every building.

Två bilder sida vid sida: en målare från Trähus stryker röd slamfärg på timmerfasaden, och renoverade vita fönsterbågar står uppställda mot timmerväggen inomhus.
Inglasad veranda med tegeltak, röd panel nedtill och vita spröjsade fönster, med trappa upp till en röd ytterdörr.
Dörrtrycke i mässing i jugendstil, med en skalbagge i relief på skylten, monterat på en rödmålad dörr.
Nylagd kopparplåt under ett färdigrenoverat vitt fönster i tegelvägg.

Nylagd kopparplåt under ett färdigrenoverat vitt fönster i tegelvägg.

Window & door restoration · Copper and sheet metal work & roof tiling
Samma fönster före och efter renovering: till vänster flagnande färg och sliten karm, till höger nymålat vitt och tätat.
En hantverkare tar bort gammal färg från en fönsterkarm med varmluftspistol och skrapa.

Markus Randström

Window & door restoration
Tegelfasad med vitmålade spröjsade fönster, och fyra hopfällda vita parasoller uppställda längs väggen.
Tegelbyggnad täckt av vildvin, med vitmålade spröjsade fönster i två våningar och rosor framför fasaden.

Tegelbyggnad täckt av vildvin, med vitmålade spröjsade fönster i två våningar och rosor framför fasaden.

Window & door restoration
Kihlmanska huset, Helsingfors
Kihlmanska huset, Helsingfors
Kihlmanska huset, Helsingfors

Eric Leraillez, Oona Peltonen

Window & door restoration · Copper and sheet metal work & roof tiling
Kihlmanska huset, Helsingfors

Markus Randström

Window & door restoration · Copper and sheet metal work & roof tiling
Kihlmanska huset, Helsingfors

Eric Leraillez, Fredric Randström

Window & door restoration · Copper and sheet metal work & roof tiling
Kihlmanska huset, Helsingfors
Kihlmanska huset, Helsingfors
Kihlmanska huset, Helsingfors
Kihlmanska huset, Helsingfors
Kihlmanska huset, Helsingfors
Kihlmanska huset, Helsingfors

Oona Peltonen

Window & door restoration · Copper and sheet metal work & roof tiling
Kihlmanska huset, Helsingfors
Kihlmanska huset, Helsingfors

Ett vackert fönster

Window & door restoration · Copper and sheet metal work & roof tiling
Kihlmanska huset, Helsingfors
Kihlmanska huset, Helsingfors
Kihlmanska huset, Helsingfors
Saarela gård, Tusby
Saarela gård, Tusby
Saarela gård, Tusby
Saarela gård, Tusby
Saarela gård, Tusby
Saarela gård, Tusby

Markus Randström

Window & door restoration · 1800-tal
Saarela gård, Tusby
Saarela gård, Tusby
Saarela gård, Tusby
Saarela gård, Tusby
Saarela gård, Tusby
Saarela gård, Tusby
Saarela gård, Tusby
Saarela gård, Tusby
Saarela gård, Tusby
Saarela gård, Tusby
Saarela gård, Tusby
Villa Skogshyddan, Grankulla
Villa Skogshyddan, Grankulla
Villa Skogshyddan, Grankulla
Villa Skogshyddan, Grankulla
Villa Skogshyddan, Grankulla
Villa Skogshyddan, Grankulla
Villa Skogshyddan, Grankulla
Villa Skogshyddan, Grankulla
Villa Skogshyddan, Grankulla
Villa Skogshyddan, Grankulla
Villa Skogshyddan, Grankulla
Villa Skogshyddan, Grankulla
Villa Skogshyddan, Grankulla
Eira sjukhus
Eira sjukhus
Eira sjukhus
Eira sjukhus

Aivo Moor, Markus Randström

Window & door restoration · On-site restoration
Eira sjukhus
Eira sjukhus
Eira sjukhus
Eira sjukhus

Fredric Randström, Mykola Dereza

Window & door restoration · Workshop & joinery
Eira sjukhus

Mykola Dereza

Window & door restoration · Workshop & joinery
Eira sjukhus
Eira sjukhus
Eira sjukhus

Fredric Randström, Markus Randström

Window & door restoration · On-site restoration
Mannerheimmuseet
Mannerheimmuseet
Mannerheimmuseet

Markus Randström

Window & door restoration · Workshop & joinery
Mannerheimmuseet

Anthony Endean

Window & door restoration · On-site restoration
Mannerheimmuseet
Mannerheimmuseet

Fredric Randström

Window & door restoration · Workshop & joinery
Villa Kleineh, Helsingfors
Villa Kleineh, Helsingfors
Villa Kleineh, Helsingfors
Villa Heikel, Grankulla
Villa Heikel, Grankulla
Villa Kleineh, Helsingfors
Villa Heikel, Grankulla
Villa Heikel, Grankulla
Villa Heikel, Grankulla
Villa Heikel, Grankulla
Villa Heikel, Grankulla
Villa Heikel, Grankulla
Villa Heikel, Grankulla
Villa Heikel, Grankulla
Villa Heikel, Grankulla
Villa Heikel, Grankulla

Oona Peltonen

Façade restoration · Window & door restoration
Villa Heikel, Grankulla
Villa Heikel, Grankulla
Villa Heikel, Grankulla

Rauno Liiv

Façade restoration · Window & door restoration
Villa Heikel, Grankulla
Villa Heikel, Grankulla

Sampo Patomäki

Façade restoration · Window & door restoration
Villa Heikel, Grankulla

Oona Peltonen

Façade restoration · Window & door restoration
Villa Heikel, Grankulla
Villa Heikel, Grankulla
Villa Heikel, Grankulla

Martin Czurgel

Façade restoration · Window & door restoration
Villa Heikel, Grankulla
Villa Heikel, Grankulla
Villa Heikel, Grankulla
Villa Heikel, Grankulla
Villa Heikel, Grankulla
Villa Heikel, Grankulla
Villa Heikel, Grankulla
Villa Heikel, Grankulla
Villa Heikel, Grankulla
Villa Heikel, Grankulla
Villa Heikel, Grankulla
Villa Heikel, Grankulla
Villa Heikel, Grankulla
Villa Heikel, Grankulla
Villa Heikel, Grankulla
Villa Heikel, Grankulla

Rauno Liiv

Façade restoration · Window & door restoration
Villa Heikel, Grankulla

Anu Levänen

Façade restoration · Window & door restoration
Villa Heikel, Grankulla
Villa Heikel, Grankulla
Villa Heikel, Grankulla
Villa Heikel, Grankulla
Breidablick, Hangö
Breidablick, Hangö
Breidablick, Hangö

Ställningarna på plats

Façade restoration · Window & door restoration
Breidablick, Hangö
Traditionellt parkettgolv i herringbone-mönster med glasskåp och öppnad dörr i bakgrunden

En trevlig bildtext här

Window & door restoration · Workshop & joinery

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