Tall Door Installation for Boats and RVs

When You Genuinely Need a Taller Opening

There is only one situation that calls for this job: the rig will not physically pass through the hole. Not the open door, not the rail, the hole itself. If your boat is nine feet two and your opening is seven feet, no amount of clever track work fixes that. The header has to come up.

That is worth being blunt about, because a re-headered opening is the expensive route and it gets sold to people who did not need it.

What Heights Are Available

Sectional doors come in one foot increments above the standard seven, so eight, nine, ten, and twelve are all stock sizes from most manufacturers. Fourteen and sixteen exist but are usually commercial lines.

Rough guidance from the driveways around here:

• Eight feet. Covers most lifted half ton trucks, a van with a roof rack, a small utility trailer.
• Nine feet. The common answer for a twenty to twenty two foot bowrider or center console on a single axle trailer.
• Ten feet. Wakeboats with a tower folded, larger center consoles, a truck camper.
• Twelve feet. Class A and larger Class C coaches. At this point you are in a purpose built bay, not a converted tract garage.

The Framing Is the Real Job

Raising an opening means cutting the wall above it and building a new header. On a single storey garage with a simple truss roof that is straightforward. On a two storey house with living space over the garage, the header is carrying floor load and the sizing is an engineering question, not a preference. The City of Huntington Beach will want a permit for structural work, and you want one too, because this is the kind of thing a buyer’s inspector notices.

Practical constraints we run into constantly:

• The garage ceiling is only so high. You cannot fit a ten foot door under a nine foot ceiling no matter what you pay.
• The opener, the lights, and sometimes a water heater vent are all in the way once the door parks higher.
• Stucco and the surrounding finish have to be made good, and matching thirty year old stucco is its own small trade.

Weight Changes Everything Behind the Door

This is the part that surprises people. A door is roughly its area in panel weight, so a sixteen by ten door is about forty percent heavier than the sixteen by seven it replaced. Add insulation and you are heavier again.

That flows straight through the system:

• Springs. Wire diameter, inside diameter and wound length all get recalculated for the new weight and the new drum. There is no adjusting a seven foot spring to suit a ten foot door.
• Drums and cables. A taller door needs more cable on the drum, which means a different drum, which changes the effective moment on the spring. The two calculations are linked.
• Track. Two inch track handles most residential loads. Past a certain weight, or on wider openings, three inch track and heavier hinges are the honest spec.
• Opener. A standard rail is cut for a seven foot door and will simply run out of travel. Eight foot doors need an extension kit, and beyond that you are usually looking at a different opener entirely.

How the Visit Goes

1. Measure the opening, the headroom, the backroom, and the lowest obstruction on the ceiling.
2. Measure your vehicle at its tallest fixed point, on its trailer, on level ground.
3. Confirm whether the header is structural and whether a permit and a drawing are needed.
4. Frame, install, spring to the finished weight, and set the drums.
5. Balance test by hand at waist height, then run both UL 325 safety reversal tests and reset the photo eyes within six inches of the floor.

Two Honest Warnings

Check your driveway slope before you commit. A driveway that rises toward the garage eats clearance you thought you had, and a driveway that falls away can put the trailer tongue on the concrete.

And check that the taller door has somewhere to go. We have measured plenty of garages where the opening could be raised but the open door would then sit exactly where the ceiling storage rack is. Clearing that out is part of the budget.

Call 4ruemontmartre at (714) 307-0921.