Often asked: How To Build A Deck With Composite Decking?

What frame do you use for composite decking?

Composite Joists (The NeoTimber Recommended Solution): Composed of a water resistant, rot-free material, WPC (wood plastic composite) joists are designed as a long-lasting alternative to wood, much like composite boards themselves.

Can I put composite decking over existing wood deck?

Do not install composite deck boards on top of wood deck boards for the following reasons: Water will seep in between the two boards and cause the wood deck boards to rot and deteriorate in time. The weight of composite deck boards on top of the wood deck boards may be too great for the substructure to safely hold.

How far apart should joists be for composite decking?

Most composite and PVC decking brands, like Trex and Azek, recommend a maximum joist spacing of 16 inches OC. Some brands, like WearDeck, let you get away with more – reinforced with a layer of fiberglass on both the top and bottom, WearDeck boards easily allow for spans of 24 inches OC.

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How long do Composite decks last?

Composite decking can last over 20 years with the proper care and maintenance. Composite holds up better under hot or cold weather shifts. Composite is resistant to rot, mold, and termites, which can take their toll on wood decking materials. Composite does not require as much upkeep as wood.

Can you screw down composite decking?

The answer is yes for a solid composite decking (must be pre-drill and must check with manufacture). You can not drill or screw through a hollow composite deck as the screw will become loose and rise in time. Like the usual wooden decking boards, you can also screw down a solid composite decking.

What is the best composite decking?

TimberTech (AZEK)



TimberTech AZEK products are high-quality, premium lines, perhaps the best (and most expensive) of all the composite decking manufacturers, with a limited warranty of 50 years. Additional product lines include TimberTech Pro (with 30-year warranties) and TimberTech Edge (25-year warranties).

How do you end a composite deck?

Composite decking ends can be finished by picture framing, raised fascia board, painting the ends, attaching decking veneer, composite nosing strips, vinyl stair nosing cove, composite corner trim or plastic end caps. In short composite decking, ends must be hidden or blended into the look of the decking boards.

How do you build a ground level composite deck?

Building A Ground Level Step-By-Step

  1. Step 3: Consider Ground Level Deck Ventilation.
  2. Step 4: Plan the Foundation and Leveling.
  3. Step 5: Lay the Beams.
  4. Step 6: Attach Anchors / Joists.
  5. Step 7: Attach Inner Joists.
  6. Step 8: Lay the Decking.
  7. Step 9: Trim the Edges.
  8. Step 10: Add Steps or Stairs.
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Can you put Trex over old deck?

If the boards on your existing deck are looking a bit worn – and the foundation and deck framing system are sound – you can simply replace the walking surfaces and deck railings with Trex decking and railing. It’s an ideal way to save time and money, while enjoying all of Trex’s benefits over wood.

What can I use to cover my deck floor?

Installing a vinyl membrane over an existing deck is easier than you think. For one, you don’t need to tear out an existing deck or patio surface, since you’re just covering it. Once the surface is prepared the new vinyl decking gets rolled over the top, secured, and sealed.

How much does it cost to replace a deck with Trex?

A typical 24′ x 12′ deck (288 square feet) built with Trex decking will cost between $4,244 and $10,826 for materials and installation. Trex decking materials cost $8.25 per square foot on average, while the average labor cost for decking is $7.52 per square foot.

Why is my composite deck warping?

Most composite deck boards will be much longer than wooden boards, because there is no fear of warpage. Your composite deck may not warp, but it can sag and buckle. Most sagging is caused by improper spacing between the joists when it is installed.

Do you leave a gap between composite deck boards?

As temperatures fluctuate, composite deck boards will naturally experience thermal expansion and contraction. That’s why the board ends should never be installed tight against one another. There should always be a slight gap.

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Can I use deck pier blocks instead of footings?

Pier blocks can be used instead of footings for a ground-level deck not requiring permits. Piers blocks can also be used if the frost level depth is less then the height of the pier block. These footing size requirements are to ensure enough soil bearing to prevent the joist from sinking in the ground.

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