Index: Core/Common/src/Core.Common.Controls/DataGrid/DataGridViewControl.cs
===================================================================
diff -u -r3d088548dfdebfd5c3adbbd67075b42e134f5c03 -r764e091fd9cde60228960a6ba3e3736e4e4fd7bd
--- Core/Common/src/Core.Common.Controls/DataGrid/DataGridViewControl.cs	(.../DataGridViewControl.cs)	(revision 3d088548dfdebfd5c3adbbd67075b42e134f5c03)
+++ Core/Common/src/Core.Common.Controls/DataGrid/DataGridViewControl.cs	(.../DataGridViewControl.cs)	(revision 764e091fd9cde60228960a6ba3e3736e4e4fd7bd)
@@ -447,6 +447,14 @@
             return dataGridView.Columns[columnIndex];
         }
 
+        /// <summary>
+        /// 
+        /// </summary>
+        public void ClearColumns()
+        {
+            dataGridView.Columns.Clear();
+        }
+
         protected override void OnLoad(EventArgs e)
         {
             dataGridView.ColumnHeadersHeightSizeMode = DataGridViewColumnHeadersHeightSizeMode.AutoSize;
Index: Riskeer/Integration/src/Riskeer.Integration.Forms/Views/AssemblyResultPerSectionView.cs
===================================================================
diff -u -r4587990a169c2284a25dbf50cb70e0fe5ca5e302 -r764e091fd9cde60228960a6ba3e3736e4e4fd7bd
--- Riskeer/Integration/src/Riskeer.Integration.Forms/Views/AssemblyResultPerSectionView.cs	(.../AssemblyResultPerSectionView.cs)	(revision 4587990a169c2284a25dbf50cb70e0fe5ca5e302)
+++ Riskeer/Integration/src/Riskeer.Integration.Forms/Views/AssemblyResultPerSectionView.cs	(.../AssemblyResultPerSectionView.cs)	(revision 764e091fd9cde60228960a6ba3e3736e4e4fd7bd)
@@ -52,9 +52,9 @@
     /// </summary>
     public partial class AssemblyResultPerSectionView : UserControl, IView
     {
-        private readonly Observer assessmentSectionResultObserver;
         private const int numberOfFixedColumns = 19;
-        
+        private readonly Observer assessmentSectionResultObserver;
+
         /// <summary>
         /// Creates a new instance of <see cref="AssemblyResultPerSectionView"/>.
         /// </summary>
@@ -89,8 +89,6 @@
             base.OnLoad(e);
 
             InitializeDataGridView();
-
-            dataGridViewControl.CellFormatting += HandleCellStyling;
         }
 
         protected override void Dispose(bool disposing)
@@ -189,23 +187,33 @@
             dataGridViewControl.AddTextBoxColumn(nameof(CombinedFailureMechanismSectionAssemblyResultRow.DuneErosion),
                                                  DuneErosionDataResources.DuneErosionFailureMechanism_Code,
                                                  true);
-            
-            foreach (SpecificFailurePath specificFailurePath in AssessmentSection.SpecificFailurePaths)
-            {
-                dataGridViewControl.AddTextBoxColumn(string.Empty, 
-                                                     specificFailurePath.Code,
-                                                     true);
-            }
 
+            SetSpecificFailurePathTextBoxColumns();
+
             SetDataSource();
+
+            dataGridViewControl.CellFormatting += HandleCellStyling;
         }
 
         private void RefreshAssemblyResults_Click(object sender, EventArgs e)
         {
+            dataGridViewControl.CellFormatting -= HandleCellStyling;
+
             refreshAssemblyResultsButton.Enabled = false;
-            SetDataSource();
+            dataGridViewControl.ClearColumns();
+            InitializeDataGridView();
         }
 
+        private void SetSpecificFailurePathTextBoxColumns()
+        {
+            foreach (SpecificFailurePath specificFailurePath in AssessmentSection.SpecificFailurePaths)
+            {
+                dataGridViewControl.AddTextBoxColumn(string.Empty,
+                                                     specificFailurePath.Code,
+                                                     true);
+            }
+        }
+
         private void SetDataSource()
         {
             ClearCurrentData();
Index: Riskeer/Integration/test/Riskeer.Integration.Forms.Test/Views/AssemblyResultPerSectionViewTest.cs
===================================================================
diff -u -r03e724e469bd63249c3b6e06e3c526e4474d3ae2 -r764e091fd9cde60228960a6ba3e3736e4e4fd7bd
--- Riskeer/Integration/test/Riskeer.Integration.Forms.Test/Views/AssemblyResultPerSectionViewTest.cs	(.../AssemblyResultPerSectionViewTest.cs)	(revision 03e724e469bd63249c3b6e06e3c526e4474d3ae2)
+++ Riskeer/Integration/test/Riskeer.Integration.Forms.Test/Views/AssemblyResultPerSectionViewTest.cs	(.../AssemblyResultPerSectionViewTest.cs)	(revision 764e091fd9cde60228960a6ba3e3736e4e4fd7bd)
@@ -35,6 +35,8 @@
 using Riskeer.AssemblyTool.KernelWrapper.TestUtil.Calculators.Assembly;
 using Riskeer.Common.Data.AssessmentSection;
 using Riskeer.Common.Data.FailureMechanism;
+using Riskeer.Common.Data.FailurePath;
+using Riskeer.Common.Data.TestUtil;
 using Riskeer.HeightStructures.Data.TestUtil;
 using Riskeer.Integration.Data;
 using Riskeer.Integration.Forms.Views;
@@ -184,6 +186,68 @@
         }
 
         [Test]
+        public void GivenFormWithAssemblyResultPerSectionView_WhenSpecificFailurePathAdded_ThenAdditionalColumnAdded()
+        {
+            // Given
+            var random = new Random(21);
+            AssessmentSection assessmentSection = TestDataGenerator.GetAssessmentSectionWithAllFailureMechanismSectionsAndResults(
+                random.NextEnumValue<AssessmentSectionComposition>());
+
+            using (new AssemblyToolCalculatorFactoryConfig())
+            using (ShowAssemblyResultPerSectionView(assessmentSection))
+            {
+                var calculatorFactory = (TestAssemblyToolCalculatorFactory) AssemblyToolCalculatorFactory.Instance;
+                AssessmentSectionAssemblyCalculatorStub calculator = calculatorFactory.LastCreatedAssessmentSectionAssemblyCalculator;
+
+                // Precondition
+                var dataGridView = (DataGridView) new ControlTester("dataGridView").TheObject;
+                Assert.AreEqual(expectedColumnCount, dataGridView.ColumnCount);
+
+                ButtonTester buttonTester = GetRefreshAssemblyResultButtonTester();
+
+                // When
+                var specificFailurePath = new SpecificFailurePath();
+                specificFailurePath.SetSections(new[]
+                {
+                    FailureMechanismSectionTestFactory.CreateFailureMechanismSection()
+                }, "test");
+
+                assessmentSection.SpecificFailurePaths.Add(specificFailurePath);
+                assessmentSection.SpecificFailurePaths.NotifyObservers();
+                calculator.CombinedFailureMechanismSectionAssemblyOutput = null;
+                buttonTester.Click();
+
+                Assert.AreEqual(expectedColumnCount + 1, dataGridView.ColumnCount);
+            }
+        }
+
+        [Test]
+        public void GivenFormWithAssemblyResultPerSectionView_WhenSpecificFailurePathRemoved_ThenAdditionalColumnRemoved()
+        {
+            // Given
+            var random = new Random(21);
+            AssessmentSection assessmentSection = TestDataGenerator.GetAssessmentSectionWithAllFailureMechanismSectionsAndResults(
+                random.NextEnumValue<AssessmentSectionComposition>());
+
+            using (new AssemblyToolCalculatorFactoryConfig())
+            using (ShowAssemblyResultPerSectionView(assessmentSection))
+            {
+                // Precondition
+                var dataGridView = (DataGridView) new ControlTester("dataGridView").TheObject;
+                Assert.AreEqual(expectedColumnCount, dataGridView.ColumnCount);
+
+                ButtonTester buttonTester = GetRefreshAssemblyResultButtonTester();
+
+                // When
+                assessmentSection.SpecificFailurePaths.RemoveAt(0);
+                assessmentSection.NotifyObservers();
+                buttonTester.Click();
+
+                Assert.AreEqual(expectedColumnCount - 1, dataGridView.ColumnCount);
+            }
+        }
+
+        [Test]
         public void Constructor_AssessmentSectionWithReferenceLine_ExpectedValues()
         {
             // Call