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Masonry Joist Hangers – What You Need To Know
Why the right joist hanger makes all the difference.
When you’re fixing timber joists into masonry walls - whether for a floor, deck or roof extension - the right connection matters. Masonry joist hangers are the unsung heroes in those joins. These metal brackets attach timber joists securely to brick or block walls and are designed to carry heavy loads, resist movement and ensure long-term stability.
Why They Matter For The Trade
- Stronger than just nails or screws for timber-to-masonry joins – standard fixings simply won’t provide the same structural reliability.
- Load distribution: masonry joist hangers help spread the load from the timber into the wall and reduce risk of joist sagging or failure over time.
- Compliance & peace of mind: for extensions, floor works or timber frame builds you need structural connections that meet building regs. Using the right hanger simplifies that specification.
- Trade speed & reliability: pre-galvanised steel finishes, standard sizes, and quality welds mean fewer on-site headaches.
How To Choose The Correct Masonry Joist Hanger
Here are the key things to check:
- Material & finish: Look for galvanised steel to resist corrosion when embedded in or fixed to masonry.
- Size & leg length: The width must match or exceed the timber joist width. Leg lengths or returns may vary for wrap-over or cavity conditions.
- Fixing substrate: Ensure the wall substrate (block, brick, concrete) is mature and capable of taking the hanger, and that the hanger back plate sits flat against the wall.
- Number of fixing holes: All hanger holes should be used with appropriate fixings (nails, screws or anchors) to achieve rated load capacities.
- Project environment: For external decks or exposed conditions, check for weather/corrosion risk and choose thicker gauge or weatherproof hangers if needed.
At Fast Fixings Online we stock a full range of masonry joist hangers built for these conditions – let us help you pick the right size and spec.
Common Mistakes To Avoid
- Installing a timber-to-timber hanger when masonry support is required – the hanger may not perform properly.
- Not using all the nail/bolt holes or using incorrect fixings – reduces strength.
- Ignoring the wall substrate – if the block or mortar isn’t fully cured or solid, the hanger could fail.
- Choosing the wrong size – e.g. the hanger is too narrow for the joist, or wrap-over legs are too short for the application.
- Failing to consider corrosion – exposed or outdoor conditions demand proper finish or corrosion rating.
How Fast Fixings Online Helps
At Fast Fixings Online we carry a specialist range of masonry joist hangers designed for timber-to-masonry connections: pre-galvanised, robust, ready for site. We offer:
- Clear size and spec filters so you find the hanger that matches your joist width and wall build
- Trade pricing and next working-day delivery (order before 3pm)
- Expert support if you want advice on hanger specification or load requirements
Whether you’re building a deck, extending a floor, or fixing joists into blockwork, using the right masonry joist hanger is crucial for safety, longevity and ease on site. Browse our masonry joist hanger range now or contact us for help selecting the correct one for your job.
