Examine the railing system and decide whether to repair or replace it. When the wood has rotted and the railing has become a safety hazard, your best option is to replace it. Purchase ready-made railing components from your home improvement store and assemble your tools.

You will be working with power tools and hammers, so be sure to wear safety glasses to protect your eyes. Before you start, ensure that you read the manufacturer’s directions and can identify the different pieces by name and purpose—particularly the brackets and other mounting components.