Deck at Garth Road, Philadelphia

On the photos you can see the deck made by Avak Inc.
You can also visit web: www.avak.us for other kind of Home remodeling work.


Decking–If you choose pressure-treated lumber, you'll have a choice between 5/4 x 6 decking (1x5-1/2 actual size) or 2" material (typically 2x4 through 2x8, all 1-1/2" thick). The size and species of the decking you choose will determine the spacing between your joists.

Determining Joist Size–2x6s through 2x10s are the most common sizes used for joists. The beams that carry them are typically 4x6 through 4x10, often "built up" from doubled 2-inch lumber. Pressure-treated lumber is generally less expensive than redwood or cedar, and can be used for the substructure even when the decking and railing will be other species.
In most cases, you'll want to determine the spacing between beams first, then use a joist size appropriate to that spacing. If the deck will be no more than 6' off the ground, a common recommendation is to space the support beams no more than 12' apart. As a rule, you'll only need one beam along the outer edge of the deck (a ledger bolted to the house supports the other end of the deck).

Determining Beam Size–Since support posts are often run through the decking to serve as railing posts, the specifications below are given for posts that will be spaced no more than 6' apart, with beams that are no more than 12' apart. With these spacing specifications, 4x4 posts are adequate for any deck less than 6' off the ground.

Decking–Deck boards should be laid with the bark side up, and with both ends centered over a joist. Stagger the joints of side-by-side deck boards so they don't line up. Notch the boards around posts or other obstructions, leaving 1/8" space for drainage.

Railings–Secure the railing posts at each corner of the deck, and on each side of the stairs. Then secure the field posts, spaced equally between the corners but no farther apart than allowed by local building codes (typically 6'). Nail the sub-railings and cap rail in place, then add the balusters.