functions.php

<?php

// return results in a forced order by post type, sub ordered by weight
function my_searchwp_query_orderby( $sql, $engine ) {
	global $wpdb;
	
	// we want to return all Pages first, followed by Posts
	
	/**
	 * MUST INCLUDE ___ALL___ ENABLED POST TYPES  <--------------------------
	 * 
	 * 
	 */
	return "ORDER BY FIELD({$wpdb->prefix}posts.post_type, 'page', 'post'), finalweight DESC, {$wpdb->prefix}posts.post_date DESC";
}
add_filter( 'searchwp_query_orderby', 'my_searchwp_query_orderby', 10, 2 );