When fate dealt me a one-two punch one afternoon, a ladder stabilizer saved my life. I was rebuilding soffits and fascias three stories up on my 40-foot, fully extended ladder. As I juggled tools and lumber, rising winds began buffeting the ladder. It wiggled and jiggled but withstood the gusts, thanks to the stabilizer. Then, in a Keystone cop-like maneuver, my partner accidentally banged a 1×10 across the bottom of the ladder. It shuddered even more but stayed put. Without the stabilizer, that ladder and I would have slid off the gable wall and crashed to the ground.

What Are Ladder Stabilizers?

Ladder stabilizers mount on extension ladders and are essential for working around windows, eaves and high walls when painting, siding or doing any exterior repair work.

Also called a “stand-off,” a ladder stabilizer has wide tubular arms and non-skid rubber pads that grip a house wall, increasing both a ladder’s stability and your “reach” working aloft. Stabilizers mount on all types of extension ladders, allowing them to straddle wide windows or “standoff” farther from a house to reach deep eaves while providing a rock-steady workstation. We’ll show you how a stabilizer can extend your ladder’s capabilities and how to use it to work faster and more safely.

When to Use Ladder Stabilizers

Although ladders are the No. 1 tool for helping you work up high, their narrow, 16- to 20-in. stance sometimes limits their ability to position you properly and safely for tackling these tricky tasks:

How Do You Make A Ladder Sturdier usage to work around high windowsTMB Studio

  • Accessing all sides of a wide window. With a stabilizer, you position the ladder only once to efficiently reach all areas around the window.

How Do You Make A Ladder Sturdier usage to work on a wide overhangTMB Studio

  • Painting the rake board of a wide overhang. A stabilizer allows you to see and reach the work from a more comfortable position.

How Do You Make A Ladder Sturdier usage to hang guttersTMB Studio

  • Working around a deep soffit to hang a gutter. If the ladder rests against the house, you have to bend back too far to work on the fascia. If it leans against the fascia, the ladder interferes with placing the gutter.

Renting scaffolding can solve most access problems. But you’ll save a lot of money and setup time by renting or buying a ladder stabilizer instead.

Be aware of overhead power lines. You could be electrocuted if you touch them with your ladder or stabilizer.

Types of Ladder Stabilizers

Stabilizers can be divided into two groups: fixed-depth and adjustable. Before renting or buying either type, verify that it’s intended for use with your aluminum or fiberglass ladder.

Fixed depth ladder stabilizers

To install a fixed-depth stabilizer, slide it over your ladder’s rungs and lock it in position with the safety clip. A typical model spans about 45 inches and holds the ladder 10 inches away from the house wall. It has a load capacity of 300 lbs. and is sold at home centers.

Adjustable ladder stabilizers

How Do You Make A Ladder Sturdier Adjustable stabilizers showing methodTMB Studio

Adjustable stabilizers are the most versatile. Attach this type to your ladder’s side rails with U-bolts. It, too, has a 300 lb. load capacity and quickly converts from variable widths of 49 inches to 65 inches (at a 12-inch depth) to a narrower width of 48 inches (but at a 29-inch depth). You can get one at a rental center or from home centers and large hardware stores.

How Do You Make A Ladder Sturdier Adjustable stabilizers showing conversion methodTMB Studio

Ladder Stabilizer Safety

Apply this ironclad rule: When installing a stabilizer, position it so it will be between the house and the ladder. Be sure to also follow these other rules:

  • Don’t use the type of stabilizers shown here on most folding (also called “articulated”) ladders. Use only the manufacturer’s recommended stabilizer for the model and duty rating of folding ladders.
  • If necessary, enlist a helper to raise the ladder (with stabilizer) into position, especially around power lines and trees.
  • Don’t stand on the stabilizer.
  • Stabilizers aren’t load-rated to carry the additional weight of ladder jacks and walk planks hung from the ladders. Also, don’t use the stabilizer arms to support planks.
  • Working aloft using old joint compound buckets to carry tools and materials is wonderfully efficient. For maximum safety, limit the weight of the filled bucket so the total load (including your weight) doesn’t exceed the capacity of either the ladder or the stabilizer. Tie a rope to the bucket, climb the ladder, haul the bucket up and tie it to the ladder rails, not the arms of the stabilizer. Stabilizers can give you an increased sense of security aloft, but know your limits! Avoid a mistake caused by overconfidence—like overreaching to get an additional 6 in. closer to a spot—that could lead to tragedy.