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Before Covering With Decking

Ensure underneath systems remain serviceable without dismantling framing.

What is about to happen?

A wooden or composite deck is being framed and built off the back of the house.

What hidden system could be affected?

Basement windows, HVAC units, foundation cleanouts, and dryer vents.

What clues or records may help?

Look at the exterior wall of the house where the ledger board will attach. Are there any pipes, vents, or access panels below the deck line?

What does the visible surface not guarantee?

A low-clearance deck (less than 3 feet off the ground) makes anything underneath it physically impossible to reach for an adult.

What becomes expensive if wrong?

If you build a low deck over a dryer vent, it cannot be cleaned, creating a fire hazard. If you build over a sewer cleanout, plumbers cannot snake the line. You will have to cut an ugly trapdoor into your expensive new composite decking.

When should local confirmation happen?

During the design phase. Make sure the deck framing allows for access hatches over critical foundation points.

Need to verify?

Contact a Deck Builder or Plumber before you cover.

Call 877-735-2796 to connect with local specialists