Construction Of A Timber Decking Joist Subframe

The days of homeowners needing to employ a deck builder in order to enjoy the advantages of having a great deck on their property are long gone. This shift is attributable to the availability of simple decking kits in stores and online, as well as articles like this one that explain how to build a deck for a home.

Planning and setting up the space where the deck will be placed are the first steps. This is accomplished by determining the location of the deck, cleaning the area of anything that can hinder the installation of the deck, and obtaining precise measurements based on the desired deck size for the homeowner.

The next stage is to determine the main elements of a deck and their purposes. These elements consist of:

Joists: Where the decking planks will be joined, these pieces of wood have been set down.

Joist frame: This is the structure that encompasses the joists.

Decking board: This board is positioned horizontally. It’s used to build the deck’s floor.

Balustrades and railings: They are used to secure the deck.

This article will describe how to construct a timber decking joist subframe as well as the significance of joist subframes or joist frames.

Importance of a Timber Decking Joist Sub Frame

When creating a deck, a joist subframe must be built for a variety of reasons. These motives consist of:

  1. For the installation of joists, joist sub-frames offer a sturdy structure.
  2. Timber used to make decks has an elevated structure thanks to subframes. This is due to the fact that some types of wood cannot be laid directly on the ground without risking harm from things like termites or water. Class-4 timbers are the type of wood that can be set directly on the ground.
  3. As a result of the lateral pattern in which the joists are put out horizontally, joist sub-frames provide lateral rigidity for the joists.
  4. Joists are prevented from drooping over time by the support that joist sub-frames give.

Steps for Building a Timber Decking Joist Sub Frame

  1. Any homeowner can build a timber decking joist subframe by following certain instructions. These actions comprise:
  2. To ensure proper water drainage, obtain the desired angle or gradient before laying the decking planks. If the homeowner wants to groove the decking planks, a gradient is necessary.
  3. On the calculated gradient, spread out the decking planks horizontally.
  4. Build a raft made of joists to sit on the drainage oversite (inclined decking boards from above). This process is specific to decks that are at ground level.
  5. Build a joist raft to rest on the drainage oversite (inclined decking boards from above). Ground-level decks only should use this approach.
  6. Install small, light-weight metal hangers or connectors where the inclined decking planks are lifted.
  7. Use noggins or connecting wood between each joist to add further rigidity to the subframe.
  8. Depending on choice, place newel posts around or on top of the joist subframe.
  9. Install the base and top rails such that the top rail is 900mm above the base rail between the newel posts.
  10. To space the railing spindles 120mm apart, use infills.



The next step is taking care of and maintaining your deck after making and installing the joist subframes. Therefore, it is crucial that the homeowner understands what is required in caring for a deck, especially one made of timber, before installing one in their home.