Deck Joist Hanger Guide & Sizing Chart: Types, Fasteners & Which Hanger You Need
Deck joist hangers are engineered structural connectors used to support joists where they frame into a ledger, flush beam, header, or other supporting member.
Choosing the right hanger depends on more than joist size. You also need to match the connection geometry, member width, load capacity, corrosion exposure, and manufacturer-approved fasteners.
Quick answer: For a standard 90-degree residential deck joist connection, a properly sized face-mount joist hanger is usually the starting point. Use concealed-flange, inside-flange, skewed, sloped, or multiple-member hangers when the framing geometry requires them.
Joist hangers are the connection layer of the joist system. Start with the Deck Framing Guide for the complete load path, use the Joist Spacing Guide and Joist Span Chart to establish the framing, then select the connector for the actual end reaction and connection geometry.
Deck Joist Hanger Sizing Chart
The hanger must fit the joist or built-up member it is designed to support. The table below gives common residential examples.
| Joist / Member | Typical Hanger Category | Example Simpson Series | Common Application |
|---|---|---|---|
| Single 2×6 | Single 2×6 face-mount hanger | LUS26 / LU26 | Ledger or flush-beam connection |
| Single 2×8 | Single 2×8 face-mount hanger | LUS28 / LU28 | Common deck joist connection |
| Single 2×10 | Single 2×10 face-mount hanger | LUS210 / LU210 | Common longer-span deck joist connection |
| Double 2×8 | Double-member hanger | LUS28-2 or other approved model | Headers, doubled joists, trimmers |
| Double 2×10 | Double-member hanger | LUS210-2 or heavier hanger as required | Headers, trimmers, concentrated framing |
| Angled joist | Skewed hanger | SUR / SUL or approved skewable hanger | 45-degree or angled framing |
| Limited edge clearance | Concealed- / inside-flange hanger | LUC or approved concealed-flange model | Edges, corners, tight beam conditions |
| Heavy load / larger member | Heavy face-mount hanger | HU / HUS or engineered equivalent | Heavy headers, beams, concentrated loads |
Model numbers are examples, not universal prescriptions. Use the connector manufacturer’s current load tables and sizing tools for the exact joist size, species, load, framing geometry, and fastener schedule.
Which Joist Hanger Do I Need?
| If Your Framing Looks Like… | Start With… |
|---|---|
| Single joist meeting a ledger or flush beam at 90° | Standard face-mount hanger |
| Hanger flanges would interfere with an edge or adjacent member | Inside- or concealed-flange hanger |
| Joist meets support at an angle | Skewed or skewable hanger |
| Joist is both angled and sloped | Approved skewed/sloped specialty hanger |
| Supporting two or three joists together | Multiple-member hanger |
| Heavy header, beam, or concentrated load | Heavy-duty hanger sized from manufacturer load tables |
| Coastal or severe-corrosion environment | Compatible stainless-steel connector and fasteners |
What Is a Deck Joist Hanger?
A joist hanger is a load-rated metal connector used to support the end of a joist when the joist does not bear directly on top of its supporting member.
Common deck applications include:
- joists framing into a ledger board
- joists framing into the face of a flush beam
- headers around stair openings
- doubled trimmer joists
- angled joists
- special framing conditions
A joist hanger is not simply a bracket that keeps the joist from moving. It is part of the structural load path.
How Joist Hangers Transfer Deck Loads
A typical attached deck load path can include:
decking → joists → joist hangers → ledger / beam → structure below
The hanger transfers the joist’s end reaction into the supporting ledger, beam, or header through:
- the hanger seat
- connector steel
- fasteners into the joist
- fasteners into the supporting member
If any part of that connection is undersized or installed incorrectly, the published connector capacity may no longer apply.
Related: Deck Framing Layout .
When Are Joist Hangers Used on a Deck?
Joist hangers are typically used when a joist frames into the face of a supporting member rather than bearing on top of it.
Common Examples
- joist-to-ledger connections
- flush beams
- stair openings
- headers and trimmers
- angled framing
Joists that bear directly on top of a beam may instead use bearing plus approved restraint, blocking, clips, or other hardware depending on the framing detail.
Bearing and hanging are different structural conditions. Do not assume every joist-to-beam connection needs the same hardware.
Need the number of joist connections first? Use How Many Deck Joists Do I Need? to establish the simple joist-line count before building the connector takeoff.
Types of Deck Joist Hangers
Face-Mount Hangers
The most common choice for square joists framing into ledgers, beams, headers, and other structural members.
Concealed-Flange Hangers
Move the flanges inward so the connector can fit where standard side flanges would interfere with an edge or adjacent framing.
Skewed Hangers
Designed for joists that meet the supporting member at an angle.
Double / Triple Joist Hangers
Sized to support built-up joists, trimmers, headers, or other multi-member framing.
Heavy-Duty Hangers
Used where standard light-duty residential hanger capacity is not adequate.
Skewed / Sloped Hangers
Designed for non-square or sloped framing where a standard hanger cannot be installed in its tested geometry.
Face-Mount vs Concealed-Flange Joist Hangers
| Type | Best Use | Main Advantage |
|---|---|---|
| Face-mount | Standard square deck framing | Simple, common, economical |
| Concealed-flange | Edges and tight framing | Flanges stay inside the connection |
| Skewed | Angled joists | Maintains approved connector geometry |
| Heavy-duty | Large members or high reactions | Higher published capacities |
Why Skewed Joist Hangers Exist
Standard joist hangers are designed around a specific connection geometry.
When a joist enters the supporting member at an angle, the connector must be approved for that skew or field adjustment. Bending a hanger that is not specifically listed or permitted for field adjustment can invalidate the published installation and capacity.
Skewed hangers are designed specifically for:
- 45-degree framing
- angled deck corners
- diagonal joist layouts
- special headers
Do not field-bend, cut, drill, or otherwise modify a connector unless the manufacturer specifically permits that modification.
How to Size a Deck Joist Hanger
Hanger selection begins with the framing member but does not end there.
Check:
- joist width
- joist depth
- single vs multiple members
- connection angle
- required downward load capacity
- uplift requirements where applicable
- lumber species
- supporting-member material
- fastener schedule
- corrosion environment
A hanger that physically fits the joist is not automatically structurally adequate.
Prescriptive Deck Joist Hanger Minimum Capacity
The American Wood Council’s 2015 IRC-based DCA 6 prescriptive residential deck guide provides the following minimum joist-hanger vertical capacities for the conditions covered by that guide. These values are useful reference points, but DCA 6 is not a substitute for the code edition adopted by your jurisdiction or the current connector manufacturer’s product data.
| Joist Size | DCA 6 Minimum Vertical Capacity |
|---|---|
| 2×6 | 400 lb |
| 2×8 | 500 lb |
| 2×10 | 600 lb |
| 2×12 | 700 lb |
These are the minimum vertical capacities in AWC DCA 6 (2015 IRC-based), not universal hanger ratings for every deck. Actual projects may require greater capacity based on loading, spacing, member geometry, concentrated loads, adopted code provisions, or engineered design.
How Deep Should a Joist Hanger Be?
Under the AWC DCA 6 prescriptive deck guidance, joist hangers shown in its deck details are required to have a depth of at least 60% of the depth of the ledger or beam. This is a DCA 6 prescriptive condition, not a universal rule for every proprietary hanger or engineered connection.
The purpose is to provide adequate connection geometry and support rather than using an undersized shallow bracket beneath a deeper structural member.
Use the actual connector manufacturer’s approved product data for final selection.
What Fasteners Should Be Used With Joist Hangers?
The correct fastener is the one specified for the exact hanger and installation.
Approved options may include:
- connector nails
- full-length nails where specified
- manufacturer-approved structural connector screws
- stainless-steel fasteners for stainless connectors
Do not substitute ordinary deck screws, drywall screws, or random framing screws for specified connector fasteners.
Simpson Strong-Tie, for example, publishes connector-by-connector approved Strong-Drive SD screw substitutions. The approved screw size and quantity vary by connector, and some substitutions can change allowable load. Simpson also cautions that nails and SD Connector screws should not be mixed within a connection unless the published installation specifically permits it.
Joist Hanger Nails vs Screws
| Fastener | Can It Be Used? | Important Rule |
|---|---|---|
| Specified hanger nails | Yes | Use the size and quantity shown in the connector schedule |
| Approved connector screws | Yes, where listed | Use only approved models, lengths, diameters, and patterns |
| Ordinary deck screws | No, unless specifically approved | General-purpose screws are not connector fasteners |
| Drywall screws | No | Not appropriate structural connector fasteners |
Do You Need to Fill Every Joist Hanger Hole?
Follow the fastener schedule shown for the exact hanger.
Connector manufacturers publish specific fastening patterns, and the published allowable load is based on the required quantity and placement of those fasteners.
Do not assume every visible hole is optional—or that every hole necessarily receives the same fastener. Different hole shapes and locations can have different fastening requirements.
Missing required fasteners can reduce connector capacity.
Simpson LUS Joist Hangers: Common Residential Examples
Simpson Strong-Tie’s LUS series is one of the most recognizable light-duty face-mount hanger families used in residential framing.
| Model Example | Typical Member |
|---|---|
| LUS26 | Single nominal 2×6 |
| LUS28 | Single nominal 2×8 |
| LUS210 | Single nominal 2×10 |
| LUS28-2 | Double 2×8 member |
| LUS210-2 | Double 2×10 member |
Simpson publishes different allowable loads depending on:
- hanger model
- wood species
- fastener type
- fastener length
- load direction
- connector finish
Do not choose the hanger only because the model number appears to match your joist size. Confirm the published load table for the complete connection.
Galvanized, ZMAX & Stainless Steel Joist Hangers
Exterior deck hardware needs corrosion protection compatible with the environment and treated lumber being used.
| Environment | Connector Approach |
|---|---|
| Typical residential exterior exposure | Exterior-rated galvanized / approved corrosion-resistant connector |
| Higher-moisture or more corrosive exposure | Higher-corrosion-resistance finish such as approved ZMAX / HDG where appropriate |
| Coastal / salt / severe-corrosion environment | Stainless-steel connector and compatible stainless fasteners may be appropriate |
Connector and fastener materials must be compatible. Do not mix materials casually in a severe-corrosion environment.
Joist Hangers for Double Joists & Headers
Doubled joists, stair headers, and trimmers require connectors designed for the actual built-up member width and load.
Common applications include:
- stair openings
- doubled trimmer joists
- headers around openings
- picture-frame framing
- concentrated reactions
Do not squeeze multiple joists into a single-member hanger or assume two light hangers equal one engineered multi-member connection.
Joist Hangers at a Deck Ledger Board
Ledger connections are one of the most common places joist hangers appear on an attached deck.
The joist hanger transfers the end reaction into the ledger, while the ledger itself transfers load into the house framing.
Both connections must be correct.
A perfectly installed joist hanger does not compensate for an improperly attached or water-damaged ledger.
Continue with our Deck Ledger Board Guide and Deck Flashing Guide .
Joist Hangers for Flush Beams
When joists frame into the side of a flush beam instead of bearing on top of it, hangers may carry the joist reactions into the beam.
This makes connector capacity especially important because the joist load is being transferred through the hanger rather than direct bearing.
See: Deck Beam Span Chart .
How Much Do Joist Hangers Cost?
Standard galvanized residential hangers are relatively inexpensive per connector, but specialty hardware can cost significantly more.
| Hanger Type | General Cost Position |
|---|---|
| Standard face-mount | Lowest |
| Concealed / inside-flange | Moderate |
| Skewed / specialty geometry | Higher |
| Heavy-duty | Higher |
| Stainless steel | Premium |
The hanger itself is only part of the hardware cost. Approved connector fasteners also need to be included.
Recommended Deck Joist Hanger Hardware
These products are most relevant to standard residential deck-hanger installation.
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Simpson Strong-Tie LUS Series Joist Hangers
Best for: Common face-mount residential joist connections where the exact LUS model fits the joist and published load requirements.
Check Simpson LUS Joist Hangers on Amazon →
Simpson Strong-Tie Strong-Drive SD Connector Screws
Best for: Connector applications where Simpson specifically lists the applicable SD screw as an approved fastener.
Do not assume one screw size or length is approved for every hanger hole. Check the exact connector’s fastening schedule.
Check Simpson SD Connector Screws on Amazon →
Simpson Strong-Tie Stainless-Steel Joist Hangers
Best for: Severe-corrosion applications where stainless connectors and compatible stainless fasteners are specified.
Check Stainless Joist Hangers on Amazon →
Buy hardware by model and specification, not by appearance. Confirm member size, hanger capacity, connector finish, and fastening schedule before ordering.
See our Deck Building Tools Guide for the broader framing-tool list.
Common Deck Joist Hanger Mistakes
1. Using Ordinary Deck Screws
General-purpose deck screws are not automatically approved connector fasteners.
2. Missing Required Fasteners
Published connector capacities depend on the specified fastening pattern.
3. Using the Wrong Hanger Width
Single-, double-, and triple-member hangers are different products.
4. Using a Hanger That Is Too Shallow
Prescriptive deck guidance includes minimum hanger-depth requirements.
5. Field-Bending a Standard Hanger
Use an approved skewed or specialty connector instead.
6. Cutting or Drilling the Connector
Do not modify connectors unless the manufacturer specifically permits it.
7. Ignoring Corrosion Exposure
Exterior connectors and fasteners need corrosion resistance appropriate for treated lumber and the environment.
8. Mixing Incompatible Metals
Severe corrosion environments require careful connector/fastener material selection.
9. Choosing by Joist Size Alone
A physical fit does not prove adequate load capacity.
10. Assuming the Hanger Fixes Bad Framing
The ledger, beam, joist, header, and supporting connection must also be structurally adequate.
What to Check on Existing Joist Hangers
When inspecting an existing deck, look for:
- missing fasteners
- incorrect screws
- rust or section loss
- bent or damaged connector steel
- hangers pulling away from the ledger or beam
- joists not fully seated in the hanger
- split framing around connector fasteners
- field-modified connectors
- undersized hangers
If a connector shows significant corrosion, deformation, missing structural fastening, or movement, have the connection evaluated before relying on the deck.
See our Deck Inspection Checklist .
How to Choose a Deck Joist Hanger Step by Step
- Identify the joist size and member count.
- Determine whether the connection is square, skewed, or sloped.
-
Identify the supporting member.
Ledger, beam, header, engineered member, etc. - Determine the required load capacity.
- Select an approved hanger model.
- Check the required fastener schedule.
- Choose the appropriate corrosion protection.
- Install the connector exactly as specified.
- Do not modify the connector in the field.
Selection order: framing geometry → member size → load → connector → fasteners → finish.
Frequently Asked Questions
What size joist hanger do I need for a 2×8?
Use a hanger designed for the actual 2×8 member width and depth and verify that its published load capacity is adequate. A Simpson LUS28 is one common face-mount example for a single nominal 2×8, but final selection depends on the complete connection.
What size joist hanger do I need for a 2×10?
A hanger sized for a single nominal 2×10 is required for a standard single joist. The Simpson LUS210 is one common example, subject to its published load and fastener requirements.
Are joist hangers required on a deck ledger?
Joist hangers are commonly used where joists frame into the face of a ledger rather than bearing on top of a structural support.
Can I use deck screws in joist hangers?
Ordinary deck screws should not be used unless the connector manufacturer specifically approves that exact screw. Use the listed connector nails or approved structural connector screws for the hanger.
Can Simpson SD screws be used in joist hangers?
Yes, in connector models and fastening positions where Simpson specifically publishes them as an approved option. Screw diameter, length, quantity, and placement vary by connector.
Do I need to fill every hole in a joist hanger?
Follow the exact manufacturer’s fastening pattern. Required holes must receive the specified fasteners, but different hole shapes and positions can have different instructions.
Can a joist hanger be bent to fit an angle?
Do not field-bend a standard hanger unless the manufacturer specifically permits it. Use an approved skewed or skewable hanger for angled framing.
What hanger do I use for a double joist?
Use a multiple-member hanger designed for the combined width and required load of the built-up joist or header. Do not force doubled members into a single-joist hanger.
Do joist hangers need to be galvanized?
Exterior deck connectors need corrosion protection suitable for the treated lumber and exposure environment. Galvanized or higher-corrosion-resistance finishes are common, while stainless steel may be appropriate for severe coastal or salt exposure.
Can joist hangers rust?
Yes. Moisture, salt exposure, treated-lumber chemistry, incompatible metals, and inadequate coatings can all accelerate corrosion.
How much weight can a joist hanger hold?
Capacity depends on the exact hanger, fasteners, wood species, load direction, and installation. Published capacities vary widely. Do not use one generic weight rating for every hanger.
Does a joist hanger need to support the full depth of the joist?
Not necessarily. AWC DCA 6 prescriptive deck guidance specifies a minimum hanger depth of at least 60% of the ledger or beam depth for the applicable connection. Manufacturer requirements still control the selected connector.
The Backyard Standard Final Answer
The right joist hanger is not simply the bracket that fits around the lumber.
It must match:
- member size
- member count
- connection geometry
- required load
- fastener schedule
- corrosion environment
For ordinary square deck framing, a properly sized face-mount hanger is usually the starting point. Tight edges may require concealed flanges, angled joists require approved skewed hangers, doubled members require multi-member connectors, and high loads may require heavier hanger series.
The simplest rule: Choose the hanger from manufacturer load data, then install it with the exact fasteners and configuration that produced that rating.
Sources & Technical References
Technical references reviewed: September 2026
- International Code Council — 2024 IRC Chapter 5: Floors / Deck Provisions
- American Wood Council — DCA 6 (2015 IRC-Based) Prescriptive Residential Wood Deck Construction Guide
- Simpson Strong-Tie — Current Wood Construction Connectors Catalog
- Simpson Strong-Tie — LUS Face-Mount Joist Hanger Installation Guide
- Simpson Strong-Tie — Connectors Approved for Strong-Drive SD Connector Screws
- Simpson Strong-Tie — Connector Holes and Specified Fastener Types
Technical note: Connector capacities and fastening requirements vary by exact hanger model, wood species, supporting member, fastener type, load direction, corrosion exposure, and installation condition. DCA 6 is based on the 2015 IRC; use the code adopted by the local jurisdiction and current manufacturer data for the exact connector being installed.
Related Deck Framing Guides
Deck Framing Guide
Return to the complete structural system: joists, beams, posts, footings, connections, and layout.
How Many Deck Joists Do I Need?
Calculate the joist-line count before turning the framing plan into a hanger and hardware takeoff.
Deck Ledger Board
Understand the structural member that many deck joist hangers attach to.
Deck Joist Span Chart
See how joist span, size, species, and spacing affect deck framing loads.
Deck Joist Spacing
Determine whether joists belong at 12, 16, or another spacing.
Deck Beam Span Chart
Understand the support member beneath the joist system.
Deck Blocking
Learn where blocking belongs and how it helps stabilize joists.
Deck Flashing
Protect ledger and framing connections from moisture damage.
Deck Framing Layout
See how joists, beams, posts, footings, ledger, and hardware work together.
Deck Inspection Checklist
Check connectors, framing, fasteners, corrosion, movement, and other structural warning signs.
