diff --git a/library/PolyVoxCore/include/PolyVoxCore/CubicSurfaceExtractor.inl b/library/PolyVoxCore/include/PolyVoxCore/CubicSurfaceExtractor.inl
index 68c00255..3e63752a 100644
--- a/library/PolyVoxCore/include/PolyVoxCore/CubicSurfaceExtractor.inl
+++ b/library/PolyVoxCore/include/PolyVoxCore/CubicSurfaceExtractor.inl
@@ -33,12 +33,13 @@ namespace PolyVox
 		,m_meshCurrent(result)
 		,m_bMergeQuads(bMergeQuads)
 	{
-		m_meshCurrent->clear();
 	}
 
 	template< template<typename> class VolumeType, typename VoxelType>
 	void CubicSurfaceExtractor<VolumeType, VoxelType>::execute()
 	{
+		m_meshCurrent->clear();
+
 		uint32_t uArrayWidth = m_regSizeInVoxels.getUpperCorner().getX() - m_regSizeInVoxels.getLowerCorner().getX() + 2;
 		uint32_t uArrayHeight = m_regSizeInVoxels.getUpperCorner().getY() - m_regSizeInVoxels.getLowerCorner().getY() + 2;
 
diff --git a/library/PolyVoxCore/include/PolyVoxCore/CubicSurfaceExtractorWithNormals.inl b/library/PolyVoxCore/include/PolyVoxCore/CubicSurfaceExtractorWithNormals.inl
index da0ebf7e..1cd99ea4 100644
--- a/library/PolyVoxCore/include/PolyVoxCore/CubicSurfaceExtractorWithNormals.inl
+++ b/library/PolyVoxCore/include/PolyVoxCore/CubicSurfaceExtractorWithNormals.inl
@@ -29,13 +29,14 @@ namespace PolyVox
 		,m_sampVolume(volData)
 		,m_meshCurrent(result)
 		,m_regSizeInVoxels(region)
-	{
-		m_meshCurrent->clear();
+	{		
 	}
 
 	template< template<typename> class VolumeType, typename VoxelType>
 	void CubicSurfaceExtractorWithNormals<VolumeType, VoxelType>::execute()
 	{		
+		m_meshCurrent->clear();
+
 		for(int32_t z = m_regSizeInVoxels.getLowerCorner().getZ(); z < m_regSizeInVoxels.getUpperCorner().getZ(); z++)
 		{
 			for(int32_t y = m_regSizeInVoxels.getLowerCorner().getY(); y < m_regSizeInVoxels.getUpperCorner().getY(); y++)
diff --git a/library/PolyVoxCore/include/PolyVoxCore/SurfaceExtractor.inl b/library/PolyVoxCore/include/PolyVoxCore/SurfaceExtractor.inl
index c206c850..1f449cd6 100644
--- a/library/PolyVoxCore/include/PolyVoxCore/SurfaceExtractor.inl
+++ b/library/PolyVoxCore/include/PolyVoxCore/SurfaceExtractor.inl
@@ -33,13 +33,13 @@ namespace PolyVox
 		//m_regSizeInVoxels.cropTo(m_volData->getEnclosingRegion());
 		m_regSizeInCells = m_regSizeInVoxels;
 		m_regSizeInCells.setUpperCorner(m_regSizeInCells.getUpperCorner() - Vector3DInt32(1,1,1));
-
-		m_meshCurrent->clear();
 	}
 
 	template< template<typename> class VolumeType, typename VoxelType>
 	void SurfaceExtractor<VolumeType, VoxelType>::execute()
 	{		
+		m_meshCurrent->clear();
+
 		uint32_t uArrayWidth = m_regSizeInVoxels.getUpperCorner().getX() - m_regSizeInVoxels.getLowerCorner().getX() + 1;
 		uint32_t uArrayHeight = m_regSizeInVoxels.getUpperCorner().getY() - m_regSizeInVoxels.getLowerCorner().getY() + 1;
 		uint32_t arraySizes[2]= {uArrayWidth, uArrayHeight}; // Array dimensions