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intervention strategies for renovation of social housing estates

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Physical measures <strong>for</strong> <strong>renovation</strong> <strong>of</strong> <strong>social</strong> <strong>housing</strong> <strong>estates</strong> Chapter 8<br />

-------------------------------------------------------------------------------------------------<br />

‘Envelope directed <strong>renovation</strong>’: Highest improvement <strong>of</strong> initial building quality<br />

by preserving the casco structure and attaching a new envelope (no preservation<br />

<strong>of</strong> internal and external walls).<br />

This approach leads to the highest flexibility <strong>of</strong> <strong>renovation</strong> by preserving only the<br />

casco structure. By replacing the building shell, it leads to a pr<strong>of</strong>ound<br />

trans<strong>for</strong>mation <strong>of</strong> the appearance <strong>of</strong> the block comparing to the initial conditions.<br />

For implementation <strong>of</strong> envelope directed <strong>renovation</strong> tenants have to move out<br />

during the works.<br />

The following scheme shows three levels <strong>of</strong> physical trans<strong>for</strong>mation and the respective<br />

approach to <strong>renovation</strong>. Physical trans<strong>for</strong>mations are roughly distinguished according to the<br />

relevance <strong>of</strong> the change to be achieved in a block (standard, pr<strong>of</strong>ound and radical<br />

trans<strong>for</strong>mation) while the approaches to <strong>renovation</strong> (<strong>renovation</strong>-light, high-level and<br />

envelope directed) are reported according the description provided above.<br />

TRANSFORMATION LEVEL<br />

PHYSICAL<br />

TRANSFORMATION<br />

RADICAL<br />

RENOVATION<br />

APPROACH<br />

ENVELOPE DIRECTED<br />

Highest improvement <strong>of</strong> initial building quality by preserving<br />

the casco structure and attaching a new envelope (no<br />

preservation <strong>of</strong> internal and external walls).<br />

This approach leads to the highest flexibility <strong>of</strong> <strong>renovation</strong> by<br />

preserving only the casco structure.<br />

By replacing the building shell, it leads to a pr<strong>of</strong>ound<br />

trans<strong>for</strong>mation <strong>of</strong> the appearance <strong>of</strong> the block comparing to<br />

the initial conditions.<br />

For implementation <strong>of</strong> envelope directed <strong>renovation</strong> tenants<br />

have to move out during the works.<br />

(RE)MOVE EXTERNAL WALLS WITH NEW ONES<br />

MOVE INNER WALLS<br />

MOVE RESIDENTS<br />

PROFOUND HIGH-LIVEL RENOVATION<br />

STANDARD<br />

Higher and more pr<strong>of</strong>ound improvement than <strong>renovation</strong>light<br />

by moving internal walls (change position and physical<br />

characteristics like materials) and adding new volumes to<br />

the building (like optoppen).<br />

This approach can pr<strong>of</strong>oundly improve, <strong>for</strong> example,<br />

<strong>housing</strong> differentiation by combining existing <strong>housing</strong> units<br />

and/or attaching new blocks or building elements to the<br />

existing block (new top-end or double glazed faces).<br />

It is usually implemented by preserving major architecture<br />

characteristics (like shape, materials, detailing).<br />

For implementation <strong>of</strong> high-level <strong>renovation</strong>, tenants need to<br />

move out during the works.<br />

ADAPTAT EXISITING EXTERNAL WALLS<br />

MOVE INNER WALLS<br />

MOVE RESIDENTS<br />

RENOVATION LIGHT<br />

Improvement <strong>of</strong> initial quality <strong>of</strong> the building by preserving all<br />

existing walls (position and physical characteristics like<br />

materials). It is implemented to upkeep the building to the<br />

living standards.<br />

For implementation <strong>of</strong> <strong>renovation</strong> light tenants do not need<br />

to move out during the works.<br />

NO MOVE EXISITING EXTERNAL<br />

MOVE INTERNAL WALLS<br />

NO MOVE OF RESIDENT<br />

EXAMPLE<br />

All the measures extrapolated from the Dutch examples can be gathered according to the<br />

<strong>renovation</strong> approaches presented above. The following table shows all the measures and<br />

their possible match to one <strong>of</strong> the approaches: <strong>renovation</strong>-light, high-level <strong>renovation</strong> and<br />

envelope directed.<br />

6. H<br />

PHYSICAL<br />

TRANSFORMATION<br />

RENOVATION APPROACH<br />

MEASURES PER APPROACH

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