How to Buy Joist Connectors for a Deck

Joist connectors provide additional structural support in connecting the joists to the decking frame. They prevent the rise and fall of the wood due to settling and temperature changes. Take the following factors into consideration before buying joist connectors for a deck.

Difficulty: Moderately Easy

Instructions

1. Count the number of joists in your deck frame. You will need two joist connectors for every joist. For example, if your deck consists of 8 joists, you will need to buy 16 joist connectors. Do not count the outside frame when figuring the number needed.

2. Measure the width of the joists. Most are either 1½ inches or 2 inches wide. You must purchase the same size joist connectors as the width of your joists. They have a pre-formed section that fits over the joist and it must be snug, so measure carefully.

3. Determine if you have double joists in your deck frame. Double joists are just two 1½-inch joists installed side by side. If you have double joists, you must purchase double joist connectors that are 3-inches wide.

4. Look to see if your deck has I-joists. You can determine this by looking at the shape. An I-joist has a cross-section just like the letter "I." You will need to buy connectors that specify they are for I-joists, in that case. They have an additional tab that fits over the rim of the joist.

5. Choose galvanized steel-joist hangars to prevent eventual rusting.

Tips & Warnings

• Also look under the name "joist hangers" when shopping for connectors. They are the same thing, only the label is different.