Giatla house

The Building

Building pre-intervention

Building post-intervention

The Giatla house, a 300-year-old farmhouse, is situated in the hamlet of Kalkstein, approximately 4.5 km from the centre of Innervillgraten, a municipality in the Austrian state of Tyrol. This area is known to be one of the most secluded regions in Austria. Sitting at an altitude of 1625 meters, the farmhouse is nestled among a cluster of 8 houses and is believed to have been built around 1682, with further expansion occurring around 1865. The building was vacant prior to the 2014-2015 renovation and was in a very deteriorated state, with signs indicating that the house was shifting downhill. The farmhouse was converted into small holiday rentals complex. On the ground and upper floors, four vacation apartments with four bathrooms were built within the existing wooden structure. The farmhouse was converted into a small holiday rental complex. On the ground and upper floors, four vacation apartments were created within the existing wooden structure, each with its own bathroom.

More Details

The Solution

Solution pre-intervention

Solution pre-intervention: pre_intervention_roof_05.jpeg

Solution pre-intervention: pre_intervention_roof_06.jpeg

Solution pre-intervention: pre_intervention_roof_07.jpeg

Solution pre-intervention: pre_intervention_roof_08.jpg

Solution post-intervention

Solution post-intervention: post_intervention_roof_03.jpg

Solution post-intervention: post_intervention_roof_04.jpg

Solution post-intervention: post_intervention_roof_05.jpg

Solution post-intervention: post_intervention_roof_06.jpg

Solution post-intervention: post_intervention_roof_07.jpg

Solution post-intervention: post_intervention_roof_10.jpg

What is the Solution?

The shingle roof including the rafters and the round timber battens were replaced in the traditional way. The roof was also thermally insulated in places where there is a heated area underneath.

Why Does it work?

The roof was built strictly in the traditional way. Bringing the thermal insulation into the roof is less problematic compared to the wall constructions.

PROS

Because the roof was replaced in the traditional way there was an aesthetic preservation of the building's appearance.
There was a drastic reduction in U-value where the roof was insulated.
Only insulating in places that are over a heated area allowed to reduce the costs of the roof insulation.
Because the roof was replaced it was easier to bring insulation into the roof.
The material chosen for insulation is eco-friendly and has a long lifespan.

CONS

Replacing the roof in the traditional way required a high level of workmanship.
It is important for between the rafters insulation to make sure the rafters are deep enough to achieve worthwile improvements in thermal performance.

Insulation material

Sheep Wool

Insulation thickness

180

Thermal conductivity

0.04

Health issue

information not available

Technical drawings

Additional documentation

Installation Method

information not available

Moisture Management and Technical Compatibility

information not available

Airtightness

The "house within a house" concept made it possible to create a new airtight level on the inside of the outer wall.

Before retrofit

After retrofit

Before retrofit

Roof thickness

360

After retrofit

Roof thickness

395

Before retrofit

Roof build-up

Shingles - 3-ply shingle roofing [100mm], Substructure - Battens [30mm], Counter battens [30mm], Rafters [200mm]

After retrofit

Roof build-up

Shingles - 3-ply shingle roofing [100mm], Substructure - Battens [30mm], Counter battens [30mm], Underlayment, Sub-roof - OSB board [20mm], Rafters with sheep's wool insulation [180mm], Vapor barrier and three-layer board [35mm]

Before retrofit

U-value

2.8

After retrofit

U-value

0.11