How To Build A Deck Extension

Any questionable areas should be repaired and or replaced. That way you ll have about a 7 inch step to the new deck. How to extend a deck in a new direction if your extension changes direction or acts as a walkway to another section of the deck you might want to change the direction of the boards.

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Many people like to add new levels to the deck connected by stairs.

How to build a deck extension. Before widening or lengthening your deck it s vital to ensure that the original deck is structurally sound. By putting the new deck on a different level it makes the transition less jarring and unsightly. Design your extension to use 2x6s if possible. To frame an extension that rises one step from the existing deck lay out the post locations and cut the posts so the joists rest on the surface of the old deck.

Check the footings posts hardware and supporting lumber to ensure everything s structurally sound and suitable for a deck extension. Some deck builders choose to sister the new joists back over the existing beam and install a new beam in front of the existing deck. Before starting any type of deck extension project inspect the existing deck to make sure the structure itself is still in good shape. Check the framing for any signs of rotting cracking or other degradation.

If the deck is attached to the house not freestanding make sure the ledger board is properly secured to the side of the house. When you reach the edge of the extension saw off the excess deck boards in line with the sub frame. Build the frame and toenail it to the old deck. Also inspect the posts.

Perhaps you want to keep your deck at the same level but need more space. Most times you ll need to remove the existing deck boards build a second frame with posts and install decking across both surfaces. This latter method is best when you re worried that the new decking material won t match the old and if the old deck is weathered at all it likely won t. The sistered joists are nailed into the sides of the existing joists and extend past the beam at least 6.