diff --git a/src/h5core/h5t_store.c b/src/h5core/h5t_store.c
index 39f77b7..594d255 100644
--- a/src/h5core/h5t_store.c
+++ b/src/h5core/h5t_store.c
@@ -296,55 +296,6 @@ h5t_mark_entity (
 	H5_CORE_API_RETURN (h5priv_insert_idlist (&t->marked_entities, entity_id, -1));
 }
 
-/*
-  When calling this function, we know the number of elements to refine. But
-  we don't now the number of new vertices we will get. We have to compute
-  this number or just to guess it.
-
-  Let n be the number of elements to refine and l the number of disconnected
-  areas to be refined.
-
-  For triangle grids the upper limit of new vertices is 3n and the lower limit
-  2n + 1. The exact number is 2n + l.
-
-  For tetrahedral grids the upper limit is 6n and the lower limit is 3n+3. 
-  The exact number is 3n + 3l.
-
-  To get the real number of vertices to add, we either have to compute the
-  number of disconnected areas (which is quiet expensive), try to guess it
-  (which is impossible) or just set a limit. In most cases the number of
-  disconnected areas will be "small".
-
-  For the time being we set the maximum number of disconnected areas to 64.
- */
-h5_err_t
-h5t_pre_refine (
-	h5_file_t* const f
-	) {
-	H5_CORE_API_ENTER1 (h5_err_t, "f=0x%p", f);
-	h5t_fdata_t* const t = f->t;
-	unsigned int num_elems_to_refine = t->marked_entities->num_items;
-	unsigned int num_elems_to_add = 0;
-	unsigned int num_vertices_to_add = 0;
-
-	switch (t->mesh_type) {
-	case H5_OID_TETRAHEDRON:
-		num_vertices_to_add = num_elems_to_refine*3 + 192;
-		num_elems_to_add = num_elems_to_refine*8;
-		break;
-	case H5_OID_TRIANGLE:
-		num_vertices_to_add = num_elems_to_refine*2 + 64;
-		num_elems_to_add = num_elems_to_refine*4;
-		break;
-	default:
-		H5_CORE_API_LEAVE (h5_error_internal ());
-	}
-	TRY (h5t_begin_store_vertices (f, num_vertices_to_add));
-	TRY (h5t_begin_store_elems (f, num_elems_to_add));
-
-	H5_CORE_API_RETURN (H5_SUCCESS);
-}
-
 /*
   Refine previously marked elements.
 */
@@ -372,7 +323,6 @@ h5t_post_refine (
 	H5_CORE_API_RETURN (h5priv_free_idlist (&t->marked_entities));
 }
 
-
 h5_err_t
 h5t_begin_refine_elems (
 	h5_file_t* const f
@@ -388,7 +338,6 @@ h5t_begin_refine_elems (
 	H5_CORE_API_RETURN (H5_SUCCESS);
 }
 
-
 h5_err_t
 h5t_end_refine_elems (
 	h5_file_t* const f
diff --git a/src/h5core/h5t_store_private.h b/src/h5core/h5t_store_private.h
index cabf254..a86547b 100644
--- a/src/h5core/h5t_store_private.h
+++ b/src/h5core/h5t_store_private.h
@@ -3,6 +3,7 @@
 
 struct h5t_store_methods {
 	h5_err_t (*alloc_elems)(h5_file_t* const, const size_t, const size_t);
+	h5_err_t (*pre_refine)(h5_file_t* const);
 	h5_loc_idx_t (*refine_elem)(h5_file_t* const, const h5_loc_idx_t);
 	h5_err_t (*end_store_elems)(h5_file_t* const);
 	h5_err_t (*get_direct_children_of_edge)(
@@ -33,6 +34,13 @@ h5tpriv_alloc_elems (
 	return (*f->t->methods.store->alloc_elems) (f, cur, new);
 }
 
+static inline h5_err_t
+h5tpriv_pre_refine (
+	h5_file_t* const f
+	) {
+	return f->t->methods.store->pre_refine (f);
+}
+
 static inline h5_loc_idx_t
 h5tpriv_refine_elem (
 	h5_file_t * const f,
diff --git a/src/h5core/h5t_store_tetm.c b/src/h5core/h5t_store_tetm.c
index 2d47329..a5b28de 100644
--- a/src/h5core/h5t_store_tetm.c
+++ b/src/h5core/h5t_store_tetm.c
@@ -127,6 +127,38 @@ bisect_edge (
 	H5_PRIV_FUNC_RETURN (h5t_store_vertex (f, -1, P));  // return idx of new vertex
 }
 
+/*
+  When calling this function, we know the number of elements to refine. But
+  we don't now the number of new vertices we will get. We have to compute
+  this number or just to guess it.
+
+  Let n be the number of elements to refine and l the number of disconnected
+  areas to be refined.
+
+  For triangle grids the upper limit of new vertices is 3n and the lower limit
+  2n + 1. The exact number is 2n + l.
+
+  For tetrahedral grids the upper limit is 6n and the lower limit is 3n+3. 
+  The exact number is 3n + 3l.
+
+  To get the real number of vertices to add, we either have to compute the
+  number of disconnected areas (which is quiet expensive), try to guess it
+  (which is impossible) or just set a limit. In most cases the number of
+  disconnected areas will be "small".
+
+  For the time being we set the maximum number of disconnected areas to 64.
+ */
+static h5_err_t
+pre_refine_tet (
+	h5_file_t* const f
+	) {
+	H5_CORE_API_ENTER1 (h5_err_t, "f=0x%p", f);
+	unsigned int num_elems_to_refine = f->t->marked_entities->num_items;
+	TRY (h5t_begin_store_vertices (f, num_elems_to_refine*3 + 192));
+	TRY (h5t_begin_store_elems (f, num_elems_to_refine*8));
+	H5_CORE_API_RETURN (H5_SUCCESS);
+}
+
 /*!
   Refine tetrahedron \c elem_idx
 
@@ -311,6 +343,7 @@ end_store_elems (
 
 struct h5t_store_methods h5tpriv_tetm_store_methods = {
 	alloc_tets,
+	pre_refine_tet,
 	refine_tet,
 	end_store_elems,
 	get_direct_children_of_edge
diff --git a/src/h5core/h5t_store_trim.c b/src/h5core/h5t_store_trim.c
index dabe972..62c5ff8 100644
--- a/src/h5core/h5t_store_trim.c
+++ b/src/h5core/h5t_store_trim.c
@@ -120,6 +120,21 @@ bisect_edge (
 	H5_PRIV_FUNC_RETURN (h5t_store_vertex (f, -1, P));
 }
 
+/*
+  Please read note about number of new vertices in tetrahedral
+  mesh implementation.
+ */
+static h5_err_t
+pre_refine_triangle (
+	h5_file_t* const f
+	) {
+	H5_CORE_API_ENTER1 (h5_err_t, "f=0x%p", f);
+	unsigned int num_elems_to_refine = f->t->marked_entities->num_items;
+	TRY (h5t_begin_store_vertices (f, num_elems_to_refine*2 + 64));
+	TRY (h5t_begin_store_elems (f, num_elems_to_refine*4));
+	H5_CORE_API_RETURN (H5_SUCCESS);
+}
+
 /*!
   Refine triangle \c local_eid
 
@@ -271,6 +286,7 @@ end_store_elems (
 
 struct h5t_store_methods h5tpriv_trim_store_methods = {
 	alloc_triangles,
+	pre_refine_triangle,
 	refine_triangle,
 	end_store_elems,
 	get_direct_children_of_edge