Internal Hangers: Proper use and installation
Internal hangers attach rain gutters to the roof edge. Proper installation will provide sturdy support without compromising looks or functionality.
Three Rules For A Proper Installation
1: START 6 INCHES
Install the first hanger 6 inches from the end of the gutter or miter.
2: SPACE 2 FEET
Hook the hangers into the lip of the gutter no more than every 24 inches.
In areas prone to snow fall, hanger placement can be as little as 12 inches apart.
3: DRILL TIGHT
Use a drill to drive the screw until it tightens against the hanger.
What To Avoid:
• Do not over-tighten. Gutter should be allowed to move horizontally on fascia because of thermal expansion.
• Do not screw the lip of the rain gutter to the hook of the hanger. This increases the risk that the rain gutter will rip or tear during expansion.
• When using Hardy Plank, do not stop driving the screw until it is tight against the hanger.
• Do not stop and restart driving the screw. The torque required to restart the drive will snap off screw head.
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When you drive a screw into the hanger hole, the hole in the fascia is not elongated so how can the back of he gutter move? Austen, Gutter Clean & Repair, Houston.
When we talk about tightening the screw versus over-tightening the screw, we are talking about thousandths (1/1000) of an inch.
If the screw is over-tightened, the gutter will be pinched against the fascia at that point. There will be no movement, not even for thermal expansion (which can create heat buckling problems).
But if the screw is tightened appropriately, we will have the breathing room provided by the thousandths of an inch. This movement along the fascia is more of a wiggle than the gutter actually moving back and forth.