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How to Build a Deck on a Slope

Floating Deck on Slope Ideas…Read this article if you want to learn how to build a deck on a slope in an effective and cost efficient way without compromising on quality.

A deck can be a great addition to your home and at the same time it can become one of the greatest nightmare if you choose the wrong kind of deck. A deck located on a slope is always a tough job, but with careful planning and forward thinking you can enjoy and realize your dream deck with minimum costs involved.

the Deck that Conquered the Hill - Durante Home Exteriors

How To Build A Floating Deck On A Slope






Aspect Details

Design Considerations

  • Ensure the slope isn’t too steep for safety.

  • Mark where railings will be positioned, avoiding any underground utilities.

Site Preparation

  • Check the ground level; hire an excavator if necessary.

  • Create a flat surface by digging out soil if needed.

Material Selection

  • Use pressure-treated lumber to resist insects and decay.

  • Choose a type of decking material (e.g., wood, composite).

Joist Installation

  • Space joists about every 8 feet along the perimeter.

  • Secure joists into the ground or into nearby sturdy supports.

Drainage Solutions

  • Incorporate proper drainage by ensuring the deck slopes away from the house.

  • Consider building steps if the slope is significant to improve access.

Unique Deck Features

  • Floating decks can allow for unique designs and maximized space.

  • The use of multiple materials can enhance appearance and strength.

General Tips

  • Take safety precautions when working on slopes.

  • Consult professionals when in doubt about structural safety.

Process in Pictures

Building a 24' X 20' Deck on Steep Slope : 5 Steps (with Pictures) - Instructables
How to Build an Elevated Deck on Uneven Ground - Dengarden

If you plan on using treated lumber for your deck, you should check with your local building codes office before beginning construction. Some areas require treated wood to be pressure-treated with arsenic-based chemicals after construction. This treatment will help prevent rot and decay in your wood over time, but it can also cause health problems if you come into contact with it too often (such as when cleaning out gutters). If this treatment is required where you live, use only pressure-treated lumber when building your deck (and don’t forget to wear gloves!).