What size ladder do I need?

Step ladder: 6 feet handles most indoor tasks (reaching 10-foot ceilings). 8 feet for rooms with higher ceilings. Extension ladder: to reach a specific height, the ladder must be 7-10 feet longer than the height you need to reach (you cannot stand on the top rungs, and the ladder extends above the landing point). For a single-story roof (8-12 feet): use a 20-24 foot extension ladder. For a two-story roof (16-20 feet): use a 28-32 foot extension ladder. For most homeowners: a 6-foot step ladder + 24-foot extension ladder covers 90% of tasks.

How do I set up an extension ladder safely?

The 4-to-1 rule: for every 4 feet of ladder height to the support point, the base should be 1 foot from the wall. For a 16-foot height: place the base 4 feet from the wall. The top should extend 3 feet above the landing (roof edge). Both feet on firm, level ground. Lock both rung locks. Have someone hold the base while you climb (or use ladder stabilizer feet). Test stability before committing your full weight. Face the ladder while climbing, maintain 3 points of contact (two hands + one foot, or two feet + one hand), and do not overreach.

Aluminum vs fiberglass ladder: which should I choose?

Aluminum: lighter (easier to carry and maneuver), more affordable, and adequate for most tasks. Do NOT use near electrical wires or power lines (aluminum conducts electricity). Fiberglass: heavier (30-50% more than aluminum), more durable, and safe for use near electrical. More expensive. For homeowners: aluminum is fine for most tasks. For any work near electrical (changing outdoor light fixtures, painting near power lines, working on the roof near the service entry): use fiberglass. For professionals and frequent users: fiberglass is worth the extra weight and cost for the added safety and durability.

What is the most common cause of ladder accidents?

Overreaching (leaning too far to one side instead of moving the ladder). Overreaching shifts your center of gravity outside the ladder base, causing it to tip. Other common causes: using the wrong ladder for the task (too short, wrong type), improper setup (wrong angle, unstable surface), standing on the top rungs, climbing with objects in your hands (use a tool belt or haul line), and using a damaged or worn ladder. Prevention: always follow the 3-point contact rule, keep your belt buckle between the side rails, and move the ladder frequently rather than reaching.

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Ladder Safety Guide: Types, Selection & Proper Use

Lumberama Editorial Team, Tool Safety & DIY Specialists Jun 20, 2026 12 min read

Why Ladder Safety Matters

Ladders cause over 500,000 injuries and 300+ deaths in the U.S. each year (CPSC). Falls from ladders are the leading cause of death in the construction industry and a top cause of emergency room visits for homeowners. Most ladder accidents are preventable: using the right ladder, setting it up properly, and following basic safety rules eliminates the vast majority of risk.

Ladder Types

Step ladder: A self-supporting A-frame ladder. Does not lean against anything (free-standing). Available in 4 to 14 foot heights. Best for: indoor tasks (painting, changing light fixtures, reaching high shelves), and outdoor tasks where you cannot lean a ladder against a structure. The two top steps and the top cap are NOT standing surfaces (standing on them causes the ladder to tip).

Extension ladder: Two-section straight ladder that extends (telescopes). Leans against a structure (wall, roof edge). Available in 16 to 40 foot lengths. Best for: reaching roofs, high exterior walls, and second-story or higher access. Must be set at the correct angle (the 4-to-1 rule: for every 4 feet of height, the base should be 1 foot from the wall).

Multi-position ladder: Adjustable hinges allow it to be used as a step ladder, extension ladder, scaffolding base, and stairway ladder. Versatile and popular for homeowners. $150-$
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Brands: Little Giant, Werner MT.

Duty Rating

Ladders are rated by the total weight they can safely support (including the person, tools, and materials). Type III (light duty): 200 lbs. Household use. Type II (medium duty): 225 lbs. Light commercial. Type I (heavy duty): 250 lbs. Industrial. Type IA (extra heavy duty): 300 lbs. Industrial. Type IAA (special duty): 375 lbs. Choose a ladder rated for AT LEAST your weight plus 25-50 lbs for tools and materials. When in doubt, go one rating higher.

Setup Rules

Extension ladder: Set at the 4-to-1 angle (base 1 foot from the wall for every 4 feet of height). The top of the ladder should extend 3 feet above the landing point (if accessing a roof). Both feet (shoes) must be on a firm, level surface (use leg levelers on uneven ground, not blocks or boards). Lock both rung locks before climbing.

Step ladder: Open fully and lock the spreaders. All four feet must be on a firm, level surface. Do not lean a step ladder against a wall and climb it like an extension ladder (it will slide).

General rules: Maintain 3 points of contact at all times (two hands and one foot, or two feet and one hand). Face the ladder while climbing (never face away). Do not overreach (your belt buckle should stay between the side rails). Never stand on the top two rungs of a step ladder or the top three rungs of an extension ladder. Do not use a ladder in high wind. Do not use a metal ladder near electrical lines.

Selection Guide

For most homeowners, two ladders cover 90% of tasks: a 6-foot step ladder ($50-$100, for indoor work and single-story exterior) and a 24-foot extension ladder ($150-$300, for second-story exterior and roof access). A multi-position ladder ($150-$400) is a versatile alternative that replaces both (but is heavier to move). Material: aluminum (lightweight, affordable, do NOT use near electrical) or fiberglass (heavier, more durable, safe near electrical).