Aluminum Moves With Temperature
A seamless gutter may look rigid.
But aluminum changes dimension as it heats and cools.
On a short run, that movement may be small.
On a very long run, it becomes more important.
What Can Happen if Movement Is Restricted?
Potential symptoms include:
- Buckling
- Joint stress
- Loose fasteners
- Distortion
- Sealant failure
Does Every Gutter Need an Expansion Joint?
No.
The need depends on:
- Total run length
- Building geometry
- Fastening
- Manufacturer/system design
Why Ontario Makes This Relevant
Exterior aluminum may experience a wide seasonal temperature range.
That means the system has to tolerate both:
- Summer heat
- Winter cold
Seamless Doesn’t Mean Motionless
A continuous piece still expands.
Good Eavestrough Design Manages Water and Material Movement.
Envirotech Exteriors can evaluate long gutter runs and choose appropriate support and joint details for the building.