WallMagasinet, Varvsstaden, Malmö - Internal Insulation - Lime-based insulating plaster - 50 mmMagasinet, Varvsstaden, Malmö Details
Magasinet, Varvsstaden, Malmö - Simple window (fixed) - Impact on the appearance only from the inside - Uw 1.3 W/m²K
Solution Year
2020
Building Age
1900-1944
Listed Building
No
Conservation Area
No
Documenting Institution
LUNDS UNIVERSITET
Location
Malmö, Sweden - 1.45m
Building Type
Industrial
Structure
Concrete frame and Brick masonry wall
The Building
Magasinet, Varvsstaden, Malmö
The property 'Varvsstaden' is built up with industrial buildings of varying character, built mainly from the 1910s until the 1980s. When it was built in 1917, the building 'Magasinet' housed various storerooms, model carpentry on the third floor and model storage in the attic. At this time, part of the ground floor served as a fire station. The magazine has a rectangular shape and is built on three floors. A square external stair tower on the south facade extends above the roof drop and is crowned by a gable roof. The facades of the buildings are in red brick with decorations in lime sandstone. The round-arched small-slatted cast-iron windows are grouped in groups of three in the two upper floors and two in the ground floor. On the ground floor, gates, doors and some windows are painted green and preferably in wood. In the building's interior, the load-bearing concrete frame is visible, with columns and beams. The floor plan is largely large, open spaces with poured concrete floors. The building has a high architectural and cultural-historical value that makes it inalienable.
More DetailsThe Solution
What is the Solution?
A rubble glazing cassette was added on the inside of the repaired original windows.
Why Does it work?
On the inside of existing windows, a window cassette of a modern type will be installed. Window manufacturers have been contacted to select the appropriate window cassette. A thermal window will be installed to achieve a low U-value to keep energy consumption down and reduce the risk of frostbite. There have been some limitations when choosing a window cassette. It involves large windows and too heavy constructions that are difficult to assemble without the aesthetic expression of the building being at risk of being disturbed. To ensure that the space between the window cassette and existing glass does not get too hot, and thus risk the old windows cracking from the heat, some care has been taken with too low U and G values. The selected window cassettes have been considered suitable from this point of view by the window supplier. Existing windows are preserved and consist of glass in cast iron windows. Some glasses have been replaced and then consist of flat glass. Other glass is cylinder-blown glass from the time of construction (probably 2-3 mm thick). The ratio between replaced glass and original glass is about 1:3. The solar shading cannot be placed on the outside of the building as it affects the aesthetic and cultural values of the building. Sun shielding will therefore be on the inside.
PROS
- U-value improvement
- Heritage preservation of the exterior facade
- Significantly improved airtightness
- Increase of thermal comfort by limiting cold surfaces
CONS
- In case of air leakage from the inside, condensation may occur on the inside of the outer original glass.
Window Type before retrofit
information not available
Window glass type
Original Single-glazing (outside)
New Double glazing (inside)
Window frame material
Wood
Window position
Inside
Shading
No shading device
Health issue
information not available
Technical drawings
Installation Method
Original windows were cleaned and repaired. New window cassette, with double glazing, were installed at inside.
Moisture Management and Technical Compatibility
In case of air leakage from the inside, condensation may occur on the inside of the outer original glass.
Airtightness
information not available
Before retrofit
After retrofit
Before retrofit
Uw-Value
5
After retrofit
Uw-Value
1,3
Before retrofit
Ug-Value
5
After retrofit
Ug-Value
5.0 , 0.58
Before retrofit
g-Solar factor
information not available
After retrofit
g-Solar factor
0,58
Assessment
Window type
Simple window (fixed)
Frame material
Timber
Aesthetic impact
Impact on the appearance only from the inside
Frame improvement
Yes
Glazing improvement
No
Additional glazing
Yes
Airtightness improvement
Yes
Window U-value
1 < U <= 2
Shading
No
Circular approach
No
Investment cost
Medium High
Location
Malmö, Sweden - 1.45m
Climatic Zone:Cfb




