Description
Arris Rail Mortice Repair Bracket – Timber Fence Support & Reinforcement
Overview
Over time, high winds putting pressure on closeboard fence panels place immense stress on the ends of the horizontal arris rails. When the tenon joint inside the post mortice rots or snaps under wind load, the entire fence section sags and loses its structural strength. The Heavy-Duty Arris Rail Mortice Repair Bracket acts as a structural splint, transferring the weight of the fence bay directly back into the post through solid plate steel.
The bracket features a flat flange that mounts flush onto the face of your timber or concrete post, paired with a formed triangular pocket that cradles the arris rail. Thanks to its multi-hole fixing layout, you can easily drive heavy wood screws or masonry anchors through the bracket, clamping the broken timber components back into perfect, rigid alignment.
Dimensions & Technical Product Matrix
| Structural Attribute | Engineering Specification |
| Bracket Configuration | Triangular Arris Rail Mortice Repair & Splint Bracket |
| Compatibility Profile | Standard triangular arris rails (Excluding square-cut rails) |
| Material Base | Heavy-Gauge Structural Carbon Steel Plate |
| Surface Weatherproofing | Industrial Hot-Dip Galvanized (Minimum 55-micron layer) |
| Flange Configuration | Flat post-mounting face with recessed fixing holes |
| Fixing Hole Layout | Pre-punched multi-hole array (Compatible with M5/M6 heavy-duty wood screws) |
| Primary Failure Protection | Corrects fence sagging, rotted tenon joints, and wind-snapped rails |
Key Applications
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Closeboard Fence Maintenance: Repairing broken horizontal rails on traditional morticed timber or concrete fence posts.
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Wind Damage Reinforcement: Strengthening weakened or straining arris rail joints before autumn and winter gales arrive.
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Retrofit Property Upgrades: Securing loose or wobbling fence bays on older properties without replacing full panels.
Contractor Fast Installation & Alignment Tip
Pro Tip: When an arris rail snaps, the heavy fence panel usually sags downward, making the rail end drop below its original line. If you try to screw the repair bracket on while the panel is sagging, your fence line will dry out crooked and out of square.
The Trade Method: Before checking any fixings or placing the bracket, slide a heavy-duty car jack or a sturdy timber lever underneath the bottom gravel board of the sagging fence section. Gently pump or pry the fence panel up until your horizontal arris rail is perfectly level and aligned with its original mortice slot. Hold the panel steady in this elevated position using a temporary prop block, slide the arris rail repair bracket tightly into place over the joint, and drive your screws home. Once secured, remove the jack; the steel bracket will hold the fence perfectly straight and level at its original height.





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