How to add new lines on a splitted page - itext

Question

I'm using (in Java)
<dependency>
<groupId>com.itextpdf</groupId>
<artifactId>itextpdf</artifactId>
<version>5.5.13</version>
</dependency>
I'm printing a header, a logo, a picture and a table on each page. Follow is the code ( a little "pseudo" ):
Document document = new Document( PageSize.A4 );
PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream( pdfFullPath ) );
writer.setPageEvent( new HeaderAndFooter() );
for ( some condition for each page ) {
document.add( theLogoInLeftTop );
document.add( new Paragraph("\n\n\n\n\n") ); <<<-- Will give room for the heder printed by the `setPageEvent`
Image thumb = Image.getInstance( theImage );
float scaler = ((document.getPageSize().getWidth() - document.leftMargin()
- document.rightMargin() ) / thumb.getWidth()) * 100;
thumb.scalePercent(scaler);
thumb.setBorder( Image.BOX );
thumb.setBorderWidth(1);
document.add( thumb );
PdfPTable table = new PdfPTable( new float[] { 1, 3 } );
table.setTotalWidth( document.getPageSize().getWidth() - document.leftMargin() - document.rightMargin() );
table.setLockedWidth(true);
// Too much rows will cause a page break and will print
// the rows over the header.
for( some or few rows ) {
table.addCell( someLeftText );
table.addCell( someRightText );
}
document.add(table);
document.newPage();
}
document.close();
writer.close();
When I have few rows all is fine and all content is printed in one page. But when I have a lot of rows a new page is started ( not my document.newPage() ) and the rows contents are printed over my header and logo ( they don't respect the document.add( new Paragraph("\n\n\n\n\n") ); at begining of each page ).
How can I do a document.add( new Paragraph("\n\n\n\n\n") ); when a new page is started by "content overflow" so I can save the header space ?
The logo is not being printed too.
This is my header creator (Just to illustrate):
public class HeaderAndFooter extends PdfPageEventHelper {
#Override
public void onEndPage(PdfWriter writer, Document document) {
// Printing the headers using
// ColumnText.showTextAligned
}
}

Answer 1

Solved:
After removing all the \n's I added the new margins at the document creation.
No need of document.setMargins()
float left = 30;
float right = 30;
float top = 85;
float bottom = 20;
Document document = new Document( PageSize.A4, left, right, top, bottom );