diff --git a/archetypal/template/building_template.py b/archetypal/template/building_template.py
index b79dc1e5..ef78e234 100644
--- a/archetypal/template/building_template.py
+++ b/archetypal/template/building_template.py
@@ -31,6 +31,7 @@ class BuildingTemplate(UmiBase):
 
     .. image:: ../images/template/buildingtemplate.png
     """
+
     _CREATED_OBJECTS = []
 
     __slots__ = (
@@ -543,6 +544,7 @@ def to_dict(self):
         data_dict["Perimeter"] = self.Perimeter.to_ref()
         data_dict["Structure"] = self.Structure.to_ref()
         data_dict["Windows"] = self.Windows.to_ref()
+        data_dict["DefaultWindowToWallRatio"] = self.DefaultWindowToWallRatio
         data_dict["Category"] = validators.string(self.Category, allow_empty=True)
         data_dict["Comments"] = validators.string(self.Comments, allow_empty=True)
         data_dict["DataSource"] = self.DataSource
diff --git a/archetypal/umi_template.py b/archetypal/umi_template.py
index 21af240a..c2d5c320 100644
--- a/archetypal/umi_template.py
+++ b/archetypal/umi_template.py
@@ -243,7 +243,7 @@ def from_idf_files(
         )
         for filename, res in results.items():
             if isinstance(res, EnergyPlusProcessError):
-                filename = (settings.logs_folder / "failed_reduce.txt").expand()
+                filename = settings.logs_folder / "failed_reduce.txt"
                 with open(filename, "a") as file:
                     file.writelines(res.write())
                     log(
diff --git a/tests/input_data/umi_samples/BostonTemplateLibrary_nodup.json b/tests/input_data/umi_samples/BostonTemplateLibrary_nodup.json
index 04d04365..f4a0f42f 100644
--- a/tests/input_data/umi_samples/BostonTemplateLibrary_nodup.json
+++ b/tests/input_data/umi_samples/BostonTemplateLibrary_nodup.json
@@ -4744,6 +4744,7 @@
       "Windows": {
         "$ref": "179"
       },
+      "DefaultWindowToWallRatio": 0.4,
       "Category": "Office Spaces",
       "Comments": "Base building definition for MIT 4433",
       "DataSource": "MIT_SDL",
@@ -4779,6 +4780,7 @@
       "Windows": {
         "$ref": "180"
       },
+      "DefaultWindowToWallRatio": 0.4,
       "Category": "Retail",
       "Comments": "Base building definition for MIT 4433",
       "DataSource": "MIT_SDL",
@@ -4814,6 +4816,7 @@
       "Windows": {
         "$ref": "181"
       },
+      "DefaultWindowToWallRatio": 0.4,
       "Category": "Residential and Lodging",
       "Comments": "Base building definition for MIT 4433",
       "DataSource": "MIT_SDL",
@@ -4849,6 +4852,7 @@
       "Windows": {
         "$ref": "181"
       },
+      "DefaultWindowToWallRatio": 0.4,
       "Category": "Residential and Lodging",
       "Comments": "Base building definition for MIT 4433",
       "DataSource": "MIT_SDL",