Single family House

The Building

Old portion of a farmhouse renovated and redeveloped from an energy point of view. Problems with humidity rising from the load-bearing walls on the ground floor have been resolved. New external coats, new roof insulation, new windows and doors and total renovation of the internal spaces.

The Solution

Solution post-intervention

What is the Solution?

Architect Marco Mauro continues his practice of using mineral and natural materials in his projects. Specifically, for the masonry, he has employed a thermal insulation system with a base of calcium silicate hydrates applied to a solid stone masonry support. For the roof renovation, he has chosen a new structure made of laminated spruce wood, with insulation in wood fibre. This combination not only ensures high energy performance but also adheres to environmental sustainability principles.

Why Does it work?

The roof was entirely rebuilt as part of the renovation of the building envelope, with the construction of a new laminated spruce wood structure, essential for structural stability. Additionally, a new anti-seismic concrete curb was created.

PROS

Increased energy comfort in both winter and summer.

CONS

High costs for the insulation

Insulation material

Wood fibre boards

Insulation thickness

200

Thermal conductivity

0.038

Health issue

Breather membrane outer and vapour barrier inner. Moisture permeable and hygroscopic thermal insulation core, reduces risk of interstitial condensation and mould.

Installation Method

The old wooden support structure was removed, a new seismic reinforced concrete curb was created, the new GL24 h fir-wood laminated structure was made, fir beads, steam brake sheath and then laid two layers of two layers laid crosswise fiberwood insulation panels.

Moisture Management and Technical Compatibility

Breather membrane outer and vapour barrier inner. Moisture permeable and hygroscopic thermal insulation core.

Airtightness

Breather membrane outer and vapour barrier inner.

Before retrofit

After retrofit

Before retrofit

Roof thickness

310

After retrofit

Roof thickness

600

Before retrofit

Roof build-up

Clay roof tiles type "Coppo Piemonte" [50 mm], Wooden battens [50 mm], Wooden battens [50 mm], Wooden beams [160 mm]

After retrofit

Roof build-up

Clay roof tiles type "Coppo Piemonte" [50 mm], Wooden battens [50 mm], Wooden battens [50 mm], breathable membrane [0,5 mm], Wood fibre insulation [200 mm], vapor control layer [0,5 mm], wooden tongue and groove boards [20 mm], Wooden beams [200 mm]

Before retrofit

U-value

1.82

After retrofit

U-value

0.19