A classic Parisian apartment is benefitting from the thermal effectiveness of the
introduction of the innovative ultra-thin Spacetherm® WL insulation.
Located in the 11th arrondissement in the heart of Paris on Boulevard Voltaire
and overlooking the Place de la Republique, the two-bedroom, 135sqm apartment
was built in the Hausmann style. Hausmann’s renovation of Paris was part of a
major programme commissioned by Emperor Napoléon III in the late 19th century,
resulting in the distinctive appearance of the wide avenues, parks and squares
which have become associated with this beautiful city.
Property owner Keirnan Murphy has made a significant investment in the
renovation of the apartment to improve overall comfort, energy efficiency and to
reduce heating costs.
Keirnan explains, “The solid stone walls, whilst adding to the building’s charm, result
in heating inefficiencies and higher heating costs. During summer the stone walls
warm during the day, retaining and radiating heat throughout the night. In winter,
the solid walls cool down leading to a huge increase in heating costs.
We undertook lots of research on solutions for green and energy-efficient
renovations. In the research, we considered products available within France and
as well as those available internationally. The Spacetherm WL aerogel insulation
from the A. Proctor Group was a perfect choice for the apartment. At just 13mm
thickness, the Spacetherm WL fits inside the lip of our cornices, which average
about 20mm. Typically the walls of these older properties are not completely flat
and so the option of an ultra-thin insulation was critical. Most alternatives were
thicker and would not have worked.
We are very pleased with the results and we noticed that when leaning up against
the Spacetherm WL you can feel your back warm against the insulation. The A.
Proctor Group were extremely helpful in addressing all the questions from the
architect and ourselves. They also provided comprehensive support and guidance
to our builder on the installation.”
Spacetherm WL is a high-performance laminate specifically designed to be fixed
to the internal surfaces of existing solid walls without the need for mechanical
fixings. Spacetherm WL consists of Spacetherm aerogel insulation blanket bonded
to 3mm Magnesium Board (MgO), for use in applications where improved thermal
performance is required with limited space.
Typically, a solid wall will have a U value of around 2.1 W/m2K. Following the
application of Spacetherm WL, this can be reduced to around 0.8 W/m2K,
dependent on the wall structure.

Spacetherm® Wall Liner

Spacetherm® Wall Liner
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Material Properties
Spacetherm
Property | Test Method | Result |
---|---|---|
Thermal Conductivity | 0.015 W/mK | |
Reaction to Fire (EN13501) | C-s1, d0 Class | |
Vapour Permeability | EN12086 | 5 μ |
Density | 150 kg/m3 | |
Thickness | 5, 10 mm | |
Surface Burning Characteristics (ASTM E84) - Flame Spread Index | ≤5 | |
Surface Burning Characteristics (ASTM E84) - Smoke Development Index | 20 | |
Maximum Operating Temperature | 125 C |
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