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Curious? Our Deck Specialists Are Just a Call Away.

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A-DIY logo A-DIY logo
Built to Last. Engineered for Strength.
  • Supports 15,000+ pounds
  • Constructed with Grade 1, kiln-dried, pressure-treated lumber
  • Reinforced with 2x8 joists and 6x6 support beams
We Don’t Just Deliver a Deck. We Stand Behind It.
Most contractors finish the job and disappear. If something goes wrong weeks—or even days—later, you're often left chasing them down, or worse, paying out of pocket.
Built to Last. Engineered for Strength.
  • 5-Year Structural Warranty
  • 25-Year Warranty on composite deck boards
  • Dedicated support team—just a call, text, or email away
  • Replacement parts shipped fast if anything’s missing or damaged

Size Guide

A - DIY Composite Deck Kit - A - DIY A - DIY Composite Deck Kit - A - DIY A - DIY Composite Deck Kit - A - DIY A - DIY Composite Deck Kit - A - DIY A - DIY Composite Deck Kit - A - DIY A - DIY Composite Deck Kit - A - DIY A - DIY Composite Deck Kit - A - DIY A - DIY Composite Deck Kit - A - DIY A - DIY Composite Deck Kit - A - DIY A - DIY Composite Deck Kit - A - DIY A - DIY Composite Deck Kit - A - DIY A - DIY Composite Deck Kit - A - DIY A - DIY Composite Deck Kit - A - DIY

A-DIY Composite Deck Kit

$4,999.00
Sold out
Material • Composite
Size • 12 x 12
Standard Series
Color • Amazon Gray
Get it delivered by October 18-22
In stock, get it delivered in 10-14 business days.

Assemble within a few hours

No Handyman Skills Needed

30 Days Return Policy

Now shipping across all USA

Need Assistance? We’re here to help!

Send us an email at support@a-diy.com, give us a call 1 (786) 358-2872. We generally respond to all inquiries within one business day.

Product Details

Premium, Low-Maintenance Decking

A High-End Composite Deck, Without the High Cost or Hassle

Skip the complexity of traditional deck building with A-DIY’s patent-pending, engineer-designed Composite Deck Kit. No cutting, measuring, or specialty tools required—just a power drill and a few hours.

Built to Last

  • Premium Composite Deck Boards – Fade, stain, and moisture-resistant with a 25-year warranty.

  • Heavy-Duty 6 x 6 Beams – Engineered for superior strength.

  • Kiln-Dried Pressure-Treated Substructure – 2 x 8 joists spaced 13 to 14 inches on center, meeting standard deck codes.

  • Galvanized Hardware – Corrosion-resistant screws for long-term durability.

  • Modern Picture Frame Border – A sleek, professional finish with no exposed cut edges.

Effortless DIY Assembly

  • No cutting or measuring required.

  • Only a power drill needed (drill bit included).

  • Pre-cut, precision-engineered components for a perfect fit.

What’s Included

  • Pre-cut composite deck boards

  • Pre-cut kiln-dried substructure (joists, beams, framing)

  • Deck blocks for secure foundation

  • Galvanized screws & hardware

  • Custom drill bit & step-by-step guide

Shipping & Returns

All shipping is done using ground transportation, with an estimated delivery time of 7 to 14 days. Please note that delivery times may vary depending on your location and any unforeseen circumstances. 

*Shipping times may vary for any deliveries made outside the highlighted area in the map above. Our support team will be able to share the approximated shipping duration

Warranty

We stand by the quality of our product and offer a generous 5-year warranty on all our decks.

Watch In Action

As seen On

A-DIY Composite Deck Kit

12 x 12 / Amazon Gray

Product Details

Product Specs

Kiln Dried Pressure Treated Wood

Resistant to warping, cracking, and moisture damage for a long-lasting, sturdy deck.

Pre-Sealed Deck Boards

5.5-inch wide boards ensure a polished, high-end finish while offering long-term protection from the elements.

6 x 6 Beams

Heavy-duty beams provide superior strength and stability.

2 x 8 Joists

Strategically spaced 13 to 14 inches on center, meeting standard deck codes for maximum support.

Modern Picture Frame Border

A sleek, professionally designed edge gives the deck a clean, finished appearance.

Galvanized Hardware

Corrosion-resistant screws and hardware prevent rust and ensure a secure build.

What's Included

Engineered Lumber Parts

Premium Grade 1, kiln-dried and pressure-treated for maximum strength and longevity.

Screws & Metal Brackets

Galvanized parts for superior durability and long-lasting performance.

Tuff Blocks

TuffBlocks deliver a lightweight, durable, and easy-to-install deck foundation built to last.

3D Instructional App

Assemble with confidence using our 3D instructional app, guiding you step by step for a seamless build.

Easier Than DIY

A-DIY's deck kits include All engineered lumber parts, Screws, Drill bit, Deck blocks. The only additional item you need is a residential power drill for securing the screws​.

BUILD NOW, PAY LATER

Flexible Payment Plans

Get your deck now with $0 down and 0% interest. Enjoy flexible and transparent payments up to 24 months.

Financing is subject to credit approval. Terms and conditions apply.

Customizations

ADJUSTABLE FOR ANY TERRAIN

Uneven Ground

Even if your yard isn’t perfectly flat, your deck can be. Just cut the posts to level things out, or use our longer post with when you need more height.

Pro Tip: On slightly uneven ground, use gravel or cement tiles under the posts to even out the height.

We offer different height post kits. Each kit includes the posts and bracing. Contact our design team for more details.

Deck Height

Standard Height
Each kit comes ready to assemble at 15–17 inches off the ground.

Increase Height
Use longer posts to raise the deck. We also offer longer post kits with bracing. Chat with our design specialists for details.

Decrease Height
Dig a few inches where the footings sit to lower the deck.

We offer different height post kits. Each kit includes the posts and bracing. Contact our design team for more details.

Category
Contractor
DIYer

Price

30-50% less

Paying premium for time and labor

Costs vary, often higher than expected

Time to Build

Under 1 hour

Weeks of waiting and delays

Endless weekends, losing precious time

Family Time

More time to create memories

Time spent coordinating and stressing

Missed moments with loved ones

Ease & Convenience

Like LEGO for adults!

Stressful scheduling and oversight

Frustrating and overwhelming

Fulfillment

Instant gratification

Watching someone else do it

Frustrating trial and error

Customization

Tailored to your dreams

Limited by budget and contractor

Depends on skill and time

Stress Level

Low—focus on what matters

High—unforeseen challenges

High—unexpected complications

Memories

Building together, bonding

Waiting, watching, worrying

Struggling, less time to enjoy

Shop now

It’s Not Just Lumber. It’s A Professionally Engineered System.

It’s built for strength, speed, and peace of mind and still costs 30–50% less than hiring a contractor. You’re getting:

  • Grade 1 kiln-dried & pressure treated wood, not store-grade lumber
  • A precision cut kit that fits together perfectly
  • No cutting, measuring, or waste
  • No tools needed except a drill
  • Designed to hold hot tubs, pergolas, and up to 15,000 lbs
  • Assembles in just a few hours
  • Includes a 5-year structural warranty and 25-year warranty on composite boards
Click here to get inspired

Proudly Built With A-DIY

Real people. Real decks. Real memories.

Have Questions?

What makes A-DIY different from traditional deck building?

A-DIY is the first company in the world to offer professional, contractor-grade deck kits that anyone can assemble. Our patent-pending design eliminates cutting, measuring, and guesswork—everything fits together perfectly, just like Lego. The only tool you need is a hand drill, making it simple even if you’re not a handyman.

Why should I choose A-DIY over hiring a contractor?
  • Save thousands on labor costs.
  • No delays or hidden fees—know exactly what you’re paying for.
  • Install in under an hour, instead of waiting weeks for a contractor.
  • Enjoy a professional-grade deck with minimal effort.
Do you build custom-sized decks?

No, we offer pre-engineered deck kits in popular sizes to keep the process simple, affordable, and stress-free. 

I’m not sure what deck size I need. Can you help?

Absolutely! You can send us pictures and measurements of your space, and we’ll connect you with a senior design consultant to recommend the best size for your needs.

Can I attach multiple decks together?

Yes! Our decks are modular, so you can combine multiple kits to create a larger or uniquely shaped deck.

Can I trim or modify the deck?

We do not recommend modifying our decks, as they are engineered to fit together perfectly. Any modifications may compromise the structure and void the warranty.

What materials do you offer?

We offer two premium materials, all designed to last 20+ years:

  • Kiln Dried Pressure-Treated Lumber – Highly durable and cost-effective.
  • Composite – A modern, low-maintenance solution with a 25-year warranty.
What is the subfloor made of?

Our subfloors use kiln-dried pressure-treated lumber, with 6x6 beams and 2x8 joists for extra durability. The joists are spaced 14 inches apart, making the deck incredibly sturdy.

How does the deck hold up in storms and strong winds?

Our decks are sturdy and secure when properly installed. For areas with high winds, we recommend using cemented footings or sonotubes for added stability.

Can I put a gazebo or hot tub on my deck?
  • Gazebo: Yes! Just make sure it is securely fastened to the deck.
  • Hot Tub: If the deck is ground-level, yes! If elevated, check with a structural professional to ensure proper support.
Is this deck strong enough for heavy furniture?

Yes! Our decks are built to contractor-grade strength and can support typical outdoor furniture, grills, and lounge setups with ease.

What comes with the deck kit?

Every kit includes pre-cut, precision-engineered materials, screws, footings, and an easy-to-follow assembly guide. It arrives ready to assemble, so there’s no need for extra tools or multiple trips to the hardware store.

How easy is it to assemble the deck?

Our decks are designed to be assembled in under an hour using just a drill. No special tools, cutting, or measuring required—everything fits together seamlessly like Lego.

Can I elevate the deck?

Yes! Our decks are designed for ground-level installation, but you can elevate them using longer posts. We recommend keeping the height within 15 to 43 inches (3 to 4 steps) for best stability. If you want to go higher, consider cemented footings or sonotubes for additional support.

Can I move or disassemble the deck?

Yes! Our decks can be disassembled and moved if needed, making them perfect for temporary or semi-permanent installations.

Do I need a permit to install this deck?

Permit requirements vary by location. You should check with your local building authority. If needed, we can provide engineering diagrams to assist with your permit application.

Do you offer financing?

Yes! We’ve partnered with Affirm to offer:

✔️ 0% interest for up to 24 months

✔️ $0 down payment options

Do you have a physical store where I can see the decks in person?

Currently, we do not have a physical store, but we are expanding our warehouses across the U.S. for faster shipping. You can check out customer reviews and photos on our website.

How long does delivery take?
  • Processing: Orders are prepared within 2–3 days.
  • Shipping: Delivery takes 7–14 days, depending on location.
  • Tracking: You’ll receive updates via email and text.
What warranty do you offer?
  • 5-year warranty on all deck parts.
  • 25-year warranty on composite decking.