If you're using the Theme Blvd Woo Commerce patch plugin, this is how you'd make the default sidebar layout full width.

woo-commerce-patch-full-width-sidebar.php

/**
 * Force WooCommerce full_width layout.
 */

function my_woocommerce_sidebar_layout( $sidebar_layout ){
	
	global $post;
	
	// Only run if WooCommerce plugin is installed
	if( function_exists( 'is_woocommerce' ) ) {
		
		// Figure out if this a static page we need force as a WooCommerce page.
		$force_woocommerce = false;
		if( is_page() ) { 
			$woocommerce_page = get_post_meta( $post->ID, '_tb_woocommerce_page', true );
			if( $woocommerce_page === 'true' )
				$force_woocommerce = true;
		}
		
		// Adjust sidebar layout if necessary.
		if( is_woocommerce() || $force_woocommerce )
			$sidebar_layout = 'full_width';
			
	}
		
	return $sidebar_layout;
}
remove_filter( 'themeblvd_sidebar_layout', 'tb_woocommerce_sidebar_layout' );
add_filter( 'themeblvd_sidebar_layout', 'my_woocommerce_sidebar_layout' );