Can I attach my deck to a hollow block concrete foundation?
Yes, there are products available for anchoring a ledger board to hollow concrete block foundations (concrete masonry unit, CMU). There are a handful of manufacturers that produce epoxy and other adhesive anchors that are tested for use in hollow CMU. These adhesive fasteners must be installed in strict compliance with the manufacturer’s installation instructions. Generally, these fasteners will provide much lower-load resistance than those connecting to solid concrete. Be careful to install a sufficient amount of fasteners based on the loads generated by the deck design. The fasteners must be approved for a wet-use, exterior environment and must provide appropriate corrosion protection.
Most builders prefer to build a freestanding deck rather than attach to a hollow concrete block house foundation wall.
Attaching the Ledger Board to the House Rim
Learn how to properly install a waterproof ledger board using flashing and fasteners. Check out our step-by-step video and detail drawings.
Vents, Pipes and Spigots
How do you install a deck ledger board around vents, pipes and spigots? We offer two solutions that can solve your problem.
Removing the Siding
Learn how to cut and remove aluminum, vinyl, wood and cement board siding for installing a deck ledger board to a house wall.
Pressure Washer Buying Guide
When it comes to cleaning your deck, it's important to choose the right pressure washer. Use this pressure washer buying guide from Decks.com to help with your decision!
How to Avoid, Prevent & Repair Deck Joist Rot
Rotted deck joists can cause homeowners headaches. Learn more about how to avoid, prevent and repair deck joist rot at Decks.com.
Deck Replacement & Repair Costs
Whether you’ve decided to tear down and rebuild your deck or if you’re only looking to repair smaller portions, you can find benchmark prices here.
More Helpful Resources
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An in-depth look at the complex issue of how to build stairs
Railings
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The basics of deck design
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Learn about permits and working with contractors
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Build a covered deck to enjoy all seasons
Ledger
Proper attachment techniques
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Materials
An overview on water drainage, benches, planters and lights
Attaching the Ledger Board to the House Rim
Learn how to properly install a waterproof ledger board using flashing and fasteners. Check out our step-by-step video and detail drawings.
Attaching the Ledger Board to Brick Siding
Do you have brick siding? You should never attach to just the brick. This is very dangerous.
Installing A Ledger Board Around A Corner
Follow our tips to properly install a deck ledger board around the corner of a house to keep water out.
Pressure Washer Buying Guide
When it comes to cleaning your deck, it's important to choose the right pressure washer. Use this pressure washer buying guide from Decks.com to help with your decision!
How To Fix Loose Deck Railing and Prevent Wobbly Banisters for Years
Learn how to fix a loose outdoor railing on your deck to avoid future damage.
Pressure Washer Buying Guide
When it comes to cleaning your deck, it's important to choose the right pressure washer. Use this pressure washer buying guide from Decks.com to help with your decision!
Explore Articles by Topic
Footings
Information related to installing frost footings for decks
Framing
Learn structural framing methods
Decking
Learn about wood and composite decking materials
Stairs
An in-depth look at the complex issue of how to build stairs
Railings
How to install guardrails and handrails to meet IRC code
Features
An overview on water drainage, benches, planters and lights
Design
The basics of deck design
Planning
Learn about permits and working with contractors
Porches & Patios
Build a covered deck to enjoy all seasons
Ledger
Proper attachment techniques
Care
Maintain your deck to maintain your investment
Materials
An overview on water drainage, benches, planters and lights