Key takeaways
- Find the crack's ends and inspect the whole frame.
- Prepare the crack properly and weld with full fusion.
- Reinforce with a gusset or plate where the frame flexes.
- Replace the trailer when the frame is widely rusted or damaged.
Find all the damage
A crack you can see is rarely the only problem. Frames crack where stress concentrates and metal has fatigued, so we check the surrounding welds, crossmembers and axle mounts for more. Cracks are traced to their true ends, often with a grinder and sometimes a dye test.
A hairline crack that is simply welded over will often come back.
The repair
We grind or gouge a groove along the crack, drill the ends to stop it spreading, preheat thicker steel and weld in passes for full fusion. Then we usually add a reinforcing plate or gusset that spreads load over a wider area, because the original design is often why the frame cracked.
Finally we clean, prime and paint the repair so rust does not undermine it.
Repair or replace
If the main frame rails are sound, repair is usually much cheaper than a new trailer. If rust has thinned the frame widely, if rails are bent or multiple cracks show metal fatigue throughout, replacement may be safer.
We give an honest recommendation. A trailer carries weight on public roads, and safety comes first.
Related services
Quick answers
Is it safe to tow after a repair?
A properly done repair on a sound frame can be safe, but always respect the trailer's ratings and have it inspected regularly. If we have doubts, we tell you.
Can aluminum trailer frames be repaired?
Often yes with the right alloy filler and technique, though some alloys and heavily fatigued frames are poor candidates.
Ready to talk it through? Get a free estimate or call 615-209-7643.