TuffBlock Deck Blocks - No-Dig Instant Foundation System

TuffBlock is the world's fastest-growing foundation system for a wide range of outdoor projects, including raised and low-profile decks, sheds, walkways, playhouses, and much more.

TuffBlock eliminates the need for digging holes, pouring concrete, or hauling heavy concrete deck blocks, making it one of the easiest and most versatile foundation systems on the market.

• Supports over 1,700 lbs per block
• 27× lighter than concrete deck blocks
• Build decks as low as 6"
• Accepts 4×4 posts (actual 3.5" × 3.5")
• Accepts 2× lumber (1½"–2") for joists and beams

In stock. Ships fast. Start building this weekend.