Skip to Content

Can decking be laid on concrete?

Yes, decking can be laid on concrete. This can be a great way to create an attractive, low-maintenance outdoor area. Preparing the surface correctly is key to ensuring a successful result that will last a long time.

It may be necessary to treat the concrete surface to make it more level, or to fill any cracks. Applying an adhesive primer or sealer to the concrete slab before laying the decking can help the boards to stay firmly in place.

It is also important to secure the decking boards to the concrete surface with either screws, anchors or spikes. Care must be taken when drilling into concrete to make sure the drill is not damaged. If the deck is above ground, the joists should still be installed correctly and the deck surface should be sealed to protect it from the elements.

The use of a professional builder is recommended for complex decking projects on concrete slabs.

How do you attach a deck to a concrete slab?

The most important factor when attaching a deck to a concrete slab is to ensure that you are securely fastening the materials to one another. To do this, there are several methods you can use:

1. Using anchors and fasteners: Using concrete anchors and fasteners, you can attach a deck to a concrete slab. First, you will need to drill a hole into the concrete slab. Make sure to drill a hole that is the same size as the anchor’s shank.

This will ensure that the anchor is properly seated and that it will not become loose. Next, you will need to affix the anchor(s) and fasteners in the holes. Finally, you can securely attach the deck to the slab using the anchors and fasteners.

2. Using bolts: You can also use bolts or lag screws to attach a deck to a concrete slab. As with anchors and fasteners, you will need to drill a hole into the concrete slab. The size of the hole will depend on the size of the bolts or lag screws that you are using.

After drilling, you can secure the bolts or lag screws into the holes, using a wrench or ratchet, and then attach the deck to the slab.

3. Using epoxy: Another option is to use epoxy to attach your deck to the concrete slab. To do this, you will need to clean the surface of the concrete slab and apply the epoxy. You can then position the deck into place, making sure the wood is properly lined up.

After waiting for the epoxy to dry and set, the deck should be securely attached to the concrete slab.

No matter what method you choose, be sure to use high-quality materials and take the time to properly secure the materials. Additionally, it is important to keep in mind that some jurisdictions may require you to consult a structural engineer or obtain a building permit before attaching a deck to a concrete slab.

Can you build a floating deck over concrete?

Yes, it is possible to build a floating deck over concrete. The process of constructing such a deck is fairly straightforward and can even be done as a DIY project. The most important part of building a floating deck over concrete is to make sure you properly prepare the surface; this involves treating or cleaning any existing concrete, patching or filling any divots or cracks, and ensuring that the concrete surface is level.

Once this is completed, you can begin building your deck frame by laying pressure-treated joists over the surface and attaching them to concrete anchors or directly to the concrete. From there, you can simply add your decking boards, deck railings, and any other details you desire.

With just a bit of effort and creativity, you can create a unique and stable floating deck above a concrete surface.

Can you build a deck on top of cement?

Yes, you can build a deck on top of cement. To do so, you will need to use concrete deck blocks or deck footings to support the deck. Concrete deck blocks, also known as pier blocks, are a preformed, concrete base made specifically for building decks.

They are quick and easy to install, and provide a strong foundation for a wooden frame. Deck footings work in the same way, but are made of steel or steel-reinforced concrete and distribute the weight load of the deck to the ground.

You will need to use a circular or post hole saw to cut the concrete or masonry to fit the deck footings, and you may also need to drill some holes for the footings to be anchored securely. After the cement has been prepared, it’s time to build the deck frame and attach it to the footings.

Once the frame is complete, you can lay down the decking materials, such as wood or composite boards, and finish up the deck.

Should decks be built with screws or nails?

When building a deck, there are many factors to consider, such as the material it is constructed from, the construction techniques used, and which type of fastener you choose when installing it. When it comes to the fastener, it is generally recommended to use screws rather than nails.

Screws are generally preferred when building a deck because they provide better holding power. They also last longer and are more resistant to corrosion. Using screws also makes it easier to disassemble the deck for repairs or renovations as nails may not always easily pull out of a screw hole, which is a common problem with using nails.

Additionally, using screws makes it easier to align and secure the parts of the deck together.

Such as the traditional wood screw, the self-drilling screw, the deck screw and lag screws. Each type has its own advantages, so it is important to carefully consider which is best for your project before deciding.

Ultimately, the decision of whether to use screws or nails when building a deck comes down to personal preference, although screws provide greater overall stability and longevity.

How do you support a deck without posts?

One way to support a deck without posts is to construct a beam and ledger system. This involves attaching two beams, one on each side, to the house’s ledger board and then having joists that span between the beams to provide support for the flooring of the deck.

The beams should typically be constructed from lumber such as pressure treated douglas fir or another type of rot resistant material. To finish off the ledger board, use metal flashing installed behind the ledger to block water from entering the home.

Additionally, you can use metal post anchors to create a ledger strapping system if you don’t have access to the home’s ledger board from the outside of the house. In some cases, adding more bracing on the inside with joists attached to the beams can provide even more support for the deck.

Additionally, if you are building a freestanding deck, you can create ample support by creating beams that run around the perimeter of the deck and connecting them on all sides.

Does a floating deck need footings?

Yes, a floating deck does need footings. The footings serve as support for the deck and help ensure the deck will remain level and more structurally sound for years to come. With a floating deck, the footings are generally made of concrete and are typically laid below the frost line in areas that experience freezing temperatures.

The floating deck is then constructed on top of the footings. Additionally, the footings must be laid in a pattern that follows a grid, with braces placed in each corner as additional support. In areas where the frost line is not a concern, the footings may only need to be a few inches deep, but it is important to ensure the footings are adequate for supporting the weight of the deck.

Other materials, such as brick or stone, can also be used for floating deck footings in areas where concrete may not be a good choice.

Can a deck be built without footings?

Yes, a deck can be built without footings depending on the size of the deck, the number of posts and joists, the soil type and the deck surface. Ground level decks with up to four posts will often not require footings, provided the posts are securely anchored using concrete anchors or spikes.

If additional posts and joists are needed for additional stability, or for a larger than 4 post deck, footings are generally required to safely support the deck. Additionally, the type of soil and surface material the deck will be built upon is also a factor.

Soft or loose soil may require footings, as the posts will be more likely to sink and shift over time. The same can be true of decks built on concrete or asphalt, as they may require footings to ensure the deck is properly supported long-term.

If you’re considering building a deck without footings, it’s best to consult with a professional to ensure you’re meeting local codes and the deck is structurally sound.

How much does a 20×20 foot deck cost?

The price of a 20×20 foot deck will depend on the materials you choose, and the cost of labor if you don’t plan to build it yourself. A basic 20×20 foot deck made with pressure-treated lumber could cost around $5,000-$7,000.

If you choose to add features to the deck such as a built-in seating area, railings, stairs, or a lattice to contain the deck, the cost could increase to approximately $10,000 or more. If you plan to use materials like composite boards or cedar, the cost could climb even higher.

It’s difficult to estimate the exact cost of a 20×20 foot deck without knowing the specific materials you will use, as well as any additional labor costs.

What is cheaper a wood deck or a concrete deck?

Generally, a wood deck is going to be cheaper than a concrete deck. Wood decks typically will cost between $15 and $25 per square foot, depending on the type of wood used and the complexity of the design.

A concrete deck is typically more expensive, between $25 and $50 per square foot depending on the complexity of the design, whether there is any specialty staining or stamping, and the retaining wall or other specialized features that may be necessary to complete construction.

Other factors such as materials, labor, and necessary permits also contribute to the overall cost of the project. Ultimately, the cost will depend on the specifics of the design and the total area of your deck.

What is the labor cost for building a 12×12 deck?

The cost of labor for building a 12×12 deck will depend on several factors, such as the type of materials used, the complexity of the design, the size of the deck, and the experience of the contractor.

In general, estimates for a 12×12 deck range from about $2,000 to $5,000 for labor, with an additional $500 to $1,500 for materials. This cost estimate doesn’t include removing and disposing of an old deck, which could be an additional cost of up to $100 or more.

Other factors that impact the cost of labor include local labor rates, the distance the contractor has to travel, the number of workers needed, the number of deck posts and beams, and the complexity of the design.

Additionally, tax, permits, and any other fees will have to be taken into account when calculating the cost of labor.