diff --git a/hub/exports/building_energy/trnsys.py b/hub/exports/building_energy/trnsys.py
index 66075213..41354d66 100644
--- a/hub/exports/building_energy/trnsys.py
+++ b/hub/exports/building_energy/trnsys.py
@@ -23,6 +23,8 @@ class Trnsys:
       for building in target_buildings:
         buildings.append(self._city.city_object(building))
       self._buildings = buildings
+    print("trnsys constructor completed")
+    self.export()
 
   def _header(self, f, building):
     f.write('***************************************\n')
@@ -41,7 +43,8 @@ class Trnsys:
     f.write(f'* Year build: {building.year_of_construction}\n')
     f.write('***************************************\n')
 
-  def _properties(self, f):
+  @staticmethod
+  def _properties(f):
     f.write('***************************************\n')
     f.write(f'* Properties\n')
     f.write('***************************************\n')
@@ -64,6 +67,32 @@ class Trnsys:
     f.write('* Daylight parameters\n')
     f.write(' UDIMIN=100 : UDIMAX=2000 : DAMIN=300\n')
 
+  @staticmethod
+  def _types(f, building):
+    f.write('***************************************\n')
+    f.write(f'* Types\n')
+    f.write('***************************************\n')
+    f.write(f'* Layers\n')
+    f.write('***************************************\n')
+    layers = {}
+    for thermal_zone in building.thermal_zones_from_internal_zones:
+      for thermal_boundary in thermal_zone.thermal_boundaries:
+        for layer in thermal_boundary.layers:
+          layers[layer.material_name] = {
+            'conductivity': layer.conductivity,
+            'capacity': '1',  # todo: ask oriol about this
+            'density': layer.density,
+            'pert': '0',  # todo: ask oriol about this
+            'penrt': '0',  # todo: ask oriol about this
+          }
+    f.write('PROPERTIES\n')
+    for layer_name, values in layers.items():
+      f.write(f'LAYER {layer_name.replace(" ", "_").upper()}\n')
+      for attribute, value in values.items():
+        f.write(f'{attribute.upper()}=\t{value}\t')
+      f.write('\n')
+
+
   @staticmethod
   def _geometry_information(f, building):
     f.write('[Geometry]\n')
@@ -82,7 +111,6 @@ class Trnsys:
       f.write(f'Layer {i}: {layer.material_name}\n')
       f.write(f'Thickness: {layer.thickness}m\n')
 
-
   @staticmethod
   def _wall_information(f, building):
     f.write('[Wall Section]\n')
@@ -91,12 +119,17 @@ class Trnsys:
     f.write(f'Height: {building.upper_corner[2] - building.lower_corner[2]}\n')
 
   def export(self):
+    print("export")
     for building in self._buildings:
       path = Path(self._path / f'{building.name}.b18')
       with open(path, 'w', encoding='utf-8') as f:
+        print(path)
         self._header(f, building)
-        self._properties(f)
+        Trnsys._properties(f)
+        Trnsys._types(f, building)
+
+        """
         self._building_information(f, building)
         Trnsys._geometry_information(f, building)
         Trnsys._wall_information(f, building)
-
+        """
diff --git a/tests/test_exports.py b/tests/test_exports.py
index 8f5204a9..de95bc64 100644
--- a/tests/test_exports.py
+++ b/tests/test_exports.py
@@ -147,3 +147,27 @@ class TestExports(TestCase):
       EnergyBuildingsExportsFactory('idf', city, self._output_path).export()
     except Exception:
       self.fail("Idf ExportsFactory raised ExceptionType unexpectedly!")
+
+  def test_trnsys_export(self):
+    """
+    export to Trnsys
+    """
+    file = 'test.geojson'
+    file_path = (self._example_path / file).resolve()
+    city = GeometryFactory('geojson',
+                           path=file_path,
+                           height_field='citygml_me',
+                           year_of_construction_field='ANNEE_CONS',
+                           function_field='CODE_UTILI',
+                           function_to_hub=Dictionaries().montreal_function_to_hub_function).city
+
+    self.assertIsNotNone(city, 'city is none')
+    EnergyBuildingsExportsFactory('trnsys', city, self._output_path).export()
+    ConstructionFactory('nrcan', city).enrich()
+    EnergyBuildingsExportsFactory('idf', city, self._output_path).export()
+    UsageFactory('nrcan', city).enrich()
+    WeatherFactory('epw', city).enrich()
+    try:
+      EnergyBuildingsExportsFactory('trnsys', city, self._output_path).export()
+    except Exception:
+      self.fail("Trnsys ExportsFactory raised ExceptionType unexpectedly!")
\ No newline at end of file