Uploaded January 2026 | Updated September 2026, 3 weeks ago

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Let’s talk foundations. TuffBlock is an instant foundation system that makes deck building far more approachable for the average DIYer. They’re lightweight, easy to place, and simple to adjust for level. Versatile enough to support everything from a 4x4 (90mm x 90mm) post to larger framing members, each block carries an individual load capacity of 1,700 lbs (770 kg).

Even better, BuildTuff’s deck chart and calculator take the guesswork out — just plug in your deck size and it’ll tell you exactly how many TuffBlocks you need to get started.

Build On.

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