diff --git a/Build/Scripts/HYPRE/build_hypre.bat b/Build/Scripts/HYPRE/build_hypre.bat
index ac4fc68d4fa..7034c3e05db 100644
--- a/Build/Scripts/HYPRE/build_hypre.bat
+++ b/Build/Scripts/HYPRE/build_hypre.bat
@@ -6,7 +6,9 @@ set LIB_TAG=v2.32.0
 set LIB_DIR=%LIB_TAG%
 
 
-::*** placehoder for parsing options
+::*** parse options
+
+set clean_hypre=
 
 call :getopts %*
 if %stopscript% == 1 exit /b
@@ -28,34 +30,43 @@ cd %FIREMODELS%
 set FIREMODELS=%CD%
 cd %CURDIR%
 
+set INSTALLDIR=%FIREMODELS%\libs\hypre\%LIB_DIR%
+
+::*** erase install directory if clean option was specified
+
+if "x%clean_hypre%" == "x" goto endif1
+  if exist %INSTALLDIR% rmdir /s /q %INSTALLDIR%
+:endif1
+
 ::*** if hypre library directory exists exit and use it
 
-set INSTALLDIR=%FIREMODELS%\libs\hypre\%LIB_DIR%
-if not exist %INSTALLDIR% goto endif1
+if not exist %INSTALLDIR% goto endif2
   set HYPRE_HOME=%INSTALLDIR%
   set buildstatus=prebuilt
   goto eof
-:endif1
-
-::*** if directory pointed to by HYPRE_HOME exists exit and use it
-
-if "x%HYPRE_HOME%" == "x" goto endif2
-  if not exist %HYPRE_HOME%  goto endif2
-    set buildstatus=prebuilt
-    goto eof
 :endif2
 
-::*** if hypre repo does not exist exit and build fds without it
+::*** if hypre repo exists build library
 
 set LIB_REPO=%FIREMODELS%\hypre
-if exist %LIB_REPO% goto endif3
+if exist %LIB_REPO% goto buildlib
+
+::*** if directory pointed to by HYPRE_HOME exists exit and use it
+::    if it doesn't exist then exit and build fds without the hypre library
+
+if "x%HYPRE_HOME%" == "x" goto else4
+if not exist %HYPRE_HOME%  goto else4
+    set buildstatus=prebuilt
+    goto endif4
+:else4
   set HYPRE_HOME=
   set buildstatus=norepo
-  goto eof
-:endif3
+:endif4
+goto eof
 
 ::*** if we've gotten this far the prebuilt libraries do not exist, the repo does exist so build the hypre library
 
+:buildlib
 cd %CURDIR%
 
 echo.
@@ -92,15 +103,13 @@ git checkout %LIB_TAG%
 echo.
 echo ----------------------------------------------------------
 echo ----------------------------------------------------------
-echo modify HYPRE_config.h.cmake.in file
+echo changing HYPRE_FMANGLE 0 to HYPRE_FMANGLE 4
+echo in the file HYPRE_config.h.cmake.in
 echo ----------------------------------------------------------
 echo ----------------------------------------------------------
 echo.
-echo change HYPRE_FMANGLE line to #define HYPRE_FMANGLE 4
-echo after saving file, press enter
-notepad %LIB_REPO%\src\config\HYPRE_config.h.cmake.in
+powershell -Command "(Get-Content %LIB_REPO%\src\config\HYPRE_config.h.cmake.in) -replace 'HYPRE_FMANGLE 0', 'HYPRE_FMANGLE 4' | Set-Content %LIB_REPO%\src\config\HYPRE_config.h.cmake.in"
 
-pause
 cd %CURDIR%
 
 echo.
@@ -143,7 +152,7 @@ call make install
 
 echo.
 set HYPRE_HOME=%INSTALLDIR%
-echo Hypre library version %LIB_TAG% built in %INSTALLDIR%
+echo The Hypre library version %LIB_TAG% was built and installed in %INSTALLDIR%
 echo.
 
 cd %CURDIR%
@@ -157,6 +166,15 @@ goto eof
  if (%1)==() exit /b
  set valid=0
  set arg=%1
+ if /I "%1" EQU "--clean-hypre" (
+    set clean_hypre=1
+    set valid=1
+ )
+ if /I "%1" EQU "--help" (
+   call :usage
+   set stopscript=1
+   exit /b
+ )
  if /I "%1" EQU "-help" (
    call :usage
    set stopscript=1
@@ -210,10 +228,14 @@ exit /b
 :: -------------------------------------------------------------
 echo build hypre
 echo. 
-echo -help           - display this message
+echo --clean-hypre    - force build of hypre library
+echo --help           - display this message
 exit /b
 
 :eof
 echo.
-if "%buildstatus%" == "norepo"   echo HYPRE library not built, The hypre git repo does not exist
-if "%buildstatus%" == "prebuilt" echo HYPRE library not built. It exists in %HYPRE_HOME%
+echo.
+if "%buildstatus%" == "norepo"   echo The Hypre git repo does not exist, The Hypre library was not built.  FDS will be built without it.
+if "%buildstatus%" == "prebuilt" echo The Hypre library was not built. FDS will be built using the
+if "%buildstatus%" == "prebuilt" echo Hypre library in %HYPRE_HOME%
+echo.
diff --git a/Build/Scripts/SUNDIALS/build_sundials.bat b/Build/Scripts/SUNDIALS/build_sundials.bat
index ac78a83e298..bdf5ae9247d 100644
--- a/Build/Scripts/SUNDIALS/build_sundials.bat
+++ b/Build/Scripts/SUNDIALS/build_sundials.bat
@@ -5,8 +5,9 @@ set LIB_TAG=v6.7.0
 
 set LIB_DIR=%LIB_TAG%
 
-::*** placehoder for parsing options
+::*** parse options
 
+set clean_sundials=
 call :getopts %*
 if %stopscript% == 1 exit /b
 
@@ -27,34 +28,41 @@ cd %FIREMODELS%
 set FIREMODELS=%CD%
 cd %CURDIR%
 
+set INSTALLDIR=%FIREMODELS%\libs\sundials\%LIB_DIR%
+
+::*** erase directory if it exists and clean option was specified
+
+if "x%clean_sundials%" == "x" goto endif1
+  if exist %INSTALLDIR% rmdir /s /q %INSTALLDIR%
+:endif1
+
 ::*** if sundials library directory exists exit and use it
 
-set INSTALLDIR=%FIREMODELS%\libs\sundials\%LIB_DIR%
-if not exist %INSTALLDIR% goto endif1
+if not exist %INSTALLDIR% goto endif2
   set SUNDIALS_HOME=%INSTALLDIR%
   set buildstatus=prebuilt
   goto eof
-:endif1
-
-::*** if directory pointed to by SUNDIALS_HOME exists exit and use it
-
-if "x%SUNDIALS_HOME%" == "x" goto endif2
-  if not exist %SUNDIALS_HOME%  goto endif2
-    set buildstatus=prebuilt
-    goto eof
 :endif2
 
-::*** if sundials repo does not exist exit and build fds without it
+::*** sundials library doesn't exist, if sundials repo exists build sundials library
 
 set LIB_REPO=%FIREMODELS%\sundials
-if exist %LIB_REPO% goto endif3
-  set SUNDIALS_HOME=
-  set buildstatus=norepo
-  goto eof
-:endif3
+if exist %LIB_REPO% goto buildlib
+
+::*** if directory pointed to by SUNDIALS_HOME exists exit and use it
+
+if "x%SUNDIALS_HOME%" == "x" goto else4
+if not exist %SUNDIALS_HOME%  goto else4
+    set buildstatus=prebuilt
+    goto endif4
+:else4
+  set build_status=norepo
+:endif4
+goto eof
 
 ::*** if we've gotten this far the prebuilt libraries do not exist, the repo does exist so build the sundials library
 
+:buildlib
 cd %LIB_REPO%
 
 set buildstatus=build
@@ -145,9 +153,7 @@ echo setting SUNDIALS_HOME environment variable to %INSTALLDIR%
 set SUNDIALS_HOME=%INSTALLDIR%
 echo.
 
-echo sundials version %LIB_TAG% installed in %INSTALLDIR%
-echo ----------------------------------------------------------
-echo ----------------------------------------------------------
+echo The Sundials library version %LIB_TAG% was built and installed in %INSTALLDIR%
 echo.
 
 cd %CURDIR%
@@ -161,7 +167,16 @@ goto eof
  if (%1)==() exit /b
  set valid=0
  set arg=%1
- if /I "%1" EQU "-help" (
+if /I "%1" EQU "--clean-sundials" (
+    set clean_sundials=1
+    set valid=1
+ )
+if /I "%1" EQU "--help" (
+   call :usage
+   set stopscript=1
+   exit /b
+ )
+if /I "%1" EQU "-help" (
    call :usage
    set stopscript=1
    exit /b
@@ -214,10 +229,13 @@ exit /b
 :: -------------------------------------------------------------
 echo build sundials
 echo. 
-echo -help           - display this message
+echo --clean-sundials - force build of sundials library
+echo --help           - display this message
 exit /b
 
 :eof
 echo.
-if "%buildstatus%" == "norepo"   echo Sundials library not built, The sundials git repo does not exist
-if "%buildstatus%" == "prebuilt" echo Sundials library not built. It exists in %SUNDIALS_HOME%
+if "%buildstatus%" == "norepo"   echo The Sundials git repo does not exist, The Sundials library was not built.  FDS will be built without it.
+if "%buildstatus%" == "prebuilt" echo The Sundials library was not built. FDS will be built using the
+if "%buildstatus%" == "prebuilt" echo Sundials library in %SUNDIALS_HOME%
+echo.
diff --git a/Build/Scripts/build_thirdparty_libs.bat b/Build/Scripts/build_thirdparty_libs.bat
new file mode 100644
index 00000000000..fe68f36c25b
--- /dev/null
+++ b/Build/Scripts/build_thirdparty_libs.bat
@@ -0,0 +1,78 @@
+@echo off
+
+set clean_hypre=
+set clean_sundials=
+set FDS_BUILDDIR=%CD%
+
+call :getopts %*
+if %stopscript% == 1 exit /b
+
+
+goto eof
+
+:: -------------------------------------------------------------
+:getopts
+:: -------------------------------------------------------------
+ set stopscript=0
+ if (%1)==() exit /b
+ set valid=0
+ set arg=%1
+ if /I "%1" EQU "--clean-hypre" (
+   set clean_hypre=--clean-hypre
+   set valid=1
+ )
+ if /I "%1" EQU "bot" (
+   set valid=1
+ )
+ if /I "%1" EQU "--clean-sundials" (
+   set clean_sundials=--clean-sundials
+   set valid=1
+ )
+ if /I "%1" EQU "--clean-all" (
+   set clean_hypre=--clean-hypre
+   set clean_sundials=--clean-sundials
+   set valid=1
+ )
+ if /I "%1" EQU "-help" (
+   call :usage
+   set stopscript=1
+   exit /b
+ )
+ shift
+ if %valid% == 0 (
+   echo.
+   echo ***Error: the input argument %arg% is invalid
+   echo.
+   echo Usage:
+   call :usage
+   set stopscript=1
+   exit /b
+ )
+if not (%1)==() goto getopts
+exit /b
+
+:: -------------------------------------------------------------
+:usage  
+:: -------------------------------------------------------------
+echo build 3rd party libraries
+echo.
+echo --clean-all      - rebuild all libraries
+echo --clean-hypre    - rebuild hypre library
+echo --clean-sundials - rebuild sundials library
+echo -help            - display this message
+exit /b
+
+:eof
+
+set CURDIR_3RDPARTY=%CD%
+set SCRIPTDIR=%~dp0
+cd %SCRIPTDIR%
+SET SCRIPTDIR=%CD%
+
+cd %SCRIPTDIR%\HYPRE
+call build_hypre %clean_hypre%
+
+cd %SCRIPTDIR%\SUNDIALS
+call build_sundials %clean_sundials%
+
+cd %CURDIR_3RDPARTY%
\ No newline at end of file
diff --git a/Build/Scripts/build_thirdparty_libs.sh b/Build/Scripts/build_thirdparty_libs.sh
index a279dddcdb4..03226b8b82d 100755
--- a/Build/Scripts/build_thirdparty_libs.sh
+++ b/Build/Scripts/build_thirdparty_libs.sh
@@ -14,6 +14,11 @@ ARG=""
 # Loop through the options
 while [[ $# -gt 0 ]]; do
     case "$1" in
+        --clean-all)
+            clean_hypre=true
+            clean_sundials=true
+            shift
+            ;;
         --clean-hypre)
             clean_hypre=true  # Set the flag to true when --clean-hypre is used
             shift
diff --git a/Build/impi_intel_win/make_fds.bat b/Build/impi_intel_win/make_fds.bat
index f8599d5f0bd..19668a1f8b6 100644
--- a/Build/impi_intel_win/make_fds.bat
+++ b/Build/impi_intel_win/make_fds.bat
@@ -8,6 +8,8 @@ if x%arg1% == xbot goto endif1
 call ..\Scripts\setup_intel_compilers.bat
 :endif1
 
+::call ..\Scripts\build_thirdparty_libs %*
+
 Title Building FDS (Intel MPI/%INTEL_IFORT%) for 64 bit Windows %TARGET%
 
 make SHELL="%ComSpec%" VPATH="../../Source" -f ..\makefile %TARGET%
diff --git a/Build/impi_intel_win_db/make_fds.bat b/Build/impi_intel_win_db/make_fds.bat
index ab002311c95..5eb6cfb11fd 100644
--- a/Build/impi_intel_win_db/make_fds.bat
+++ b/Build/impi_intel_win_db/make_fds.bat
@@ -8,6 +8,8 @@ if x%arg1% == xbot goto endif1
 call ..\Scripts\setup_intel_compilers.bat
 :endif1
 
+::call ..\Scripts\build_thirdparty_libs %*
+
 Title Building debug FDS (Intel MPI/%INTEL_IFORT%) for 64 bit Windows %TARGET%
 
 make SHELL="%ComSpec%" VPATH="../../Source" -f ..\makefile %TARGET%
diff --git a/Build/impi_intel_win_dv/make_fds.bat b/Build/impi_intel_win_dv/make_fds.bat
index d20b8a53a9f..2f8dc8cd080 100644
--- a/Build/impi_intel_win_dv/make_fds.bat
+++ b/Build/impi_intel_win_dv/make_fds.bat
@@ -8,6 +8,8 @@ if x%arg1% == xbot goto endif1
 call ..\Scripts\setup_intel_compilers.bat
 :endif1
 
+::call ..\Scripts\build_thirdparty_libs %*
+
 Title Building DV FDS (Intel MPI/%INTEL_IFORT%) for 64 bit Windows %TARGET%
 
 make SHELL="%ComSpec%" VPATH="../../Source" -f ..\makefile %TARGET%
diff --git a/Build/impi_intel_win_openmp/make_fds.bat b/Build/impi_intel_win_openmp/make_fds.bat
index 9723b066695..cde89571f39 100644
--- a/Build/impi_intel_win_openmp/make_fds.bat
+++ b/Build/impi_intel_win_openmp/make_fds.bat
@@ -8,6 +8,8 @@ if x%arg1% == xbot goto endif1
 call ..\Scripts\setup_intel_compilers.bat
 :endif1
 
+::call ..\Scripts\build_thirdparty_libs %*
+
 Title Building OpenMP FDS (Intel MPI/%INTEL_IFORT% OpenMP) for 64 bit Windows %TARGET%
 
 make SHELL="%ComSpec%" VPATH="../../Source" -f ..\makefile %TARGET%
diff --git a/Build/impi_intel_win_openmp_db/make_fds.bat b/Build/impi_intel_win_openmp_db/make_fds.bat
index 2977966636b..a040474b9c9 100644
--- a/Build/impi_intel_win_openmp_db/make_fds.bat
+++ b/Build/impi_intel_win_openmp_db/make_fds.bat
@@ -8,6 +8,8 @@ if x%arg1% == xbot goto endif1
 call ..\Scripts\setup_intel_compilers.bat
 :endif1
 
+::call ..\Scripts\build_thirdparty_libs %*
+
 Title Building debug OpenMP FDS (Intel MPI/%INTEL_IFORT% OpenMP) for 64 bit Windows %TARGET%
 
 make SHELL="%ComSpec%" VPATH="../../Source" -f ..\makefile %TARGET%
diff --git a/Build/impi_intel_win_openmp_dv/make_fds.bat b/Build/impi_intel_win_openmp_dv/make_fds.bat
index 92a90c214cc..e9babd4cbe7 100644
--- a/Build/impi_intel_win_openmp_dv/make_fds.bat
+++ b/Build/impi_intel_win_openmp_dv/make_fds.bat
@@ -8,6 +8,8 @@ if x%arg1% == xbot goto endif1
 call ..\Scripts\setup_intel_compilers.bat
 :endif1
 
+::call ..\Scripts\build_thirdparty_libs %*
+
 Title Building dv OpenMP FDS (Intel MPI/%INTEL_IFORT% OpenMP) for 64 bit Windows %TARGET%
 
 make SHELL="%ComSpec%" VPATH="../../Source" -f ..\makefile %TARGET%
diff --git a/Build/impi_intel_win_vt/make_fds.bat b/Build/impi_intel_win_vt/make_fds.bat
index f8599d5f0bd..19668a1f8b6 100644
--- a/Build/impi_intel_win_vt/make_fds.bat
+++ b/Build/impi_intel_win_vt/make_fds.bat
@@ -8,6 +8,8 @@ if x%arg1% == xbot goto endif1
 call ..\Scripts\setup_intel_compilers.bat
 :endif1
 
+::call ..\Scripts\build_thirdparty_libs %*
+
 Title Building FDS (Intel MPI/%INTEL_IFORT%) for 64 bit Windows %TARGET%
 
 make SHELL="%ComSpec%" VPATH="../../Source" -f ..\makefile %TARGET%