What Size Ladder for a 2-Storey House?

When choosing a ladder for a 2-storey house, it’s important to select one that reaches the necessary height safely and is appropriate for the tasks you plan to perform. This guide will help you understand the factors to consider and how to choose the right ladder.

Determining the Required Ladder Height

Two-storey houses typically range between 4.7 and 5.8 meters (15.5-19 feet) in height. To determine the correct ladder size:

  1. Measure Ceiling Height: The average ceiling height is about 2.35 meters. For a two-storey house, double this height to approximately 4.7 meters for the distance from the ground to the eaves.
  2. Add Safety Margin: Add about a meter to the height you’ll be working at to avoid overreaching and ensure safety. This brings the total to around 5.7 meters.

Types of Ladders Suitable for a 2-Storey House

Extension Ladders

Extension ladders are ideal for reaching high places and offer versatility for various tasks around a two-storey house. They can be adjusted to different heights and are easy to store when not in use.

  1. Double Extension Ladders: Typically extend from 4.7 meters to over 9 meters.
  2. Triple Extension Ladders: Offer additional height and are more compact when collapsed.

Material Considerations

  1. Aluminium Ladders: Lightweight and durable but conduct electricity, making them unsuitable for use near electrical hazards.
  2. Fiberglass Ladders: Heavier and more expensive but do not conduct electricity, providing added safety near electrical work.

Ladder Safety Tips

  1. Angle of Placement: Set the ladder at a 75-degree angle for optimal safety. This means the base should be one-quarter of the ladder’s working length away from the wall.
  2. Secure the Ladder: Always ensure the ladder is on stable ground and secure it at the top to prevent slipping.
  3. Three Points of Contact: Maintain three points of contact (two hands and one foot or two feet and one hand) when climbing to enhance stability and prevent falls.

Specialized Ladders for Roofing Work

If you need to work on the roof frequently, consider investing in a roof ladder. These ladders have hooks to secure them to the roof ridge and bearers to distribute weight evenly across the roof tiles, providing additional safety and stability.

Choosing the Right Ladder for Specific Tasks

  1. Cleaning Gutters and Windows: An extension ladder reaching at least 5.7 meters.
  2. Roof Maintenance: A roof ladder with hooks for added security.
  3. Electrical Work: A fiberglass ladder to prevent electrical hazards.


Selecting the right ladder for a 2-storey house involves considering the height required, the tasks you’ll be performing, and the safest materials for your needs. Extension ladders offer versatility and ease of storage, while roof ladders provide added security for roof work. By understanding these factors and following safety guidelines, you can ensure efficient and safe completion of your tasks.