Can they be used for fence post?

No, they are really not appropriate as a fence post base. They aren't designed to supply much lateral support. They're meant to support a deck post.

My local building inspection office requires an icc, intertech, or similar evaluation product evaluation for new products does this have one?

Yes, their website shows the product has been evaluated and been certified. Search Tuff Block certification and the search should take you to the web page with the information! Good Luck!

How many would i need for a 20'x20' woodworking shop/ shed with a loft?

One big package does 10x10 so I would get 2. I had maybe 5 blocks left over.

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Instant Foundation Block for Decks (24-Pack)

Instant Foundation Block for Decks (24-Pack)

Product ID: 70667234

Details

Brand
Tuffblock
Capacity
1700 pounds
Color
Black
Material
High strength
Product Dimensions
11.81"L x

🌞Ultra-high UV rated recycled polyolefin

⚖️Only 1.5 lbs, 28x lighter than concrete

🏋️‍♂️Supports 1700+ lbs load

E£ 124070

Duties & taxes included

In stock

Sold byAmazon EGYPTDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to EGYPT.

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Description

🏗️ Build Bold, Build Smart — The Future of Deck Foundations is Here!

UNMATCHED LOAD CAPACITY - Each block supports over 1700 lbs, ensuring rock-solid stability for your projects.
LIGHTWEIGHT ECO FRIENDLY - Weighing just 1.5 lbs, these recycled blocks are 28 times lighter than concrete, reducing your carbon footprint.
EFFORTLESS DECK FOUNDATIONS - No digging or heavy lifting—install decks and platforms in hours, not days.
VERSATILE FIT FOR ALL PROJECTS - Designed to accept 2-inch nominal joists and 4x4 posts, perfect for decks, sheds, and more.
BUILT TO LAST WITH 25 YEAR WARRANTY - UV-resistant, ventilated design prevents moisture and termite damage for decades of durability.

The TuffBlock Instant Foundation System offers a revolutionary lightweight alternative to traditional concrete blocks for floating decks and platforms as low as 6.5 inches off the ground. Each block supports over 1700 pounds while weighing only 1.5 pounds, made from ultra-UV resistant recycled polyolefin. Designed for easy installation without digging, it fits all 2-inch nominal joists and 4x4 posts, providing a durable, ventilated, and termite-resistant foundation backed by a 25-year warranty.

Specifications

ASIN	B075G8C9C4
Best Sellers Rank	#681,282 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #432 in Decking
Brand	Tuffblock
Brand Name	Tuffblock
Capacity	1700 pounds
Color	Black
Customer Reviews	4.6 out of 5 stars 126 Reviews
Hole Count	2
Item Dimensions L x W	11.81"L x 11.81"W
Item Weight	1.5 pounds
Manufacturer	Evolve Group
Manufacturer Part Number	14010011
Material Type	High strength closed loop recycled polyolefin material with an ultra-high UV rating
Number of Items	24
Number of Pieces	24
Product Dimensions	11.81"L x 11.81"W
Unit Count	24 Count
Warranty Description	25 year warranty

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Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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TrustScore 4.5 | 7,300+ reviews

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Great experience from order to delivery. Highly recommended!

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E£ 124070

Duties & taxes included

In stock

Sold byAmazon EGYPTDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to EGYPT.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Rajesh P.

Customer service was outstanding when I had questions about the product.

2 days ago

Fatima A.

Best international shipping I've ever tried. Worth every penny!

3 days ago

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