How Tall of a Ladder Do I Need? For 2-Story Homes 2025

Are you wondering what height ladder you’ll need for your 2-storey house? It’s a common question — and the answer is firmly grounded in safety standards. For typical two-storey homes in the UK, ladders ranging from 20 to 24 feet (approximately 6 to 7.3 metres) are generally appropriate for most household maintenance tasks.

When considering different ladder sizes, it’s important to strike a balance between safety and practicality. A double extension ladder measuring 3.5 metres (extending to 6 metres) or 4 metres (extending to 7 metres) is usually sufficient for a standard two-storey property. However, it’s worth noting that a straight ladder typically provides a reach of around two feet higher than its actual length. For example, if you need to reach a height of 20 feet safely, a 24-foot extension ladder would be required.

In this comprehensive guide, we’ll address the question: “What size ladder do you need for a 2-storey house?” We'll explore the different types of ladders, recommended heights, and key safety considerations. We’ll also help you choose the most suitable ladder for specific tasks around your home — making sure your choice is both safe and practical.

What Size Ladder Do You Need for a 2-Story House?

Selecting the correct ladder size for a 2-storey house involves more than simply picking the tallest one available. For most two-storey homes in the UK, a ladder between 20 and 24 feet (approximately 6 to 7.3 metres) is generally suitable. This range allows safe access to rooflines, gutters, and other exterior areas without the need to overreach.

The 4:1 Rule: Essential for Proper Ladder Positioning

Before determining the exact ladder height you’ll need, it’s important to understand the essential 4:1 rule. For every 4 feet of vertical height, the base of the ladder should be placed 1 foot away from the wall. So, if you’re working on a 20-foot wall, the ladder’s base should sit 5 feet out. This positioning creates a safe climbing angle of approximately 75 degrees.

Calculating the Exact Ladder Length You Need

Calculating the required ladder length involves a bit of mathematics — specifically, Pythagoras’ theorem. When the ladder forms a right-angled triangle with the wall and the ground, the ladder acts as the hypotenuse. So, for a 20-foot wall with the base positioned 5 feet out (in line with the 4:1 rule), you’d need a ladder approximately 20.6 feet long. However, to allow for the necessary safety extension above the roofline, a 24-foot ladder is the minimum size recommended.

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Standard Extension Ladder Sizes and Their Reach

Extension ladders are available in standard sizes, each offering a specific maximum reach:

• 16-foot ladder – approximately 15-foot reach (ideal for single-storey tasks)
• 20-foot ladder – around 19-foot reach (suitable for lower roof edges)
• 24-foot ladder – approximately 23-foot reach (recommended for two-storey houses)
• 28-foot ladder – around 27-foot reach (used for taller buildings or tree maintenance)

It’s important to remember that a ladder’s advertised length does not equate to its full usable height. This is because a portion of the ladder overlaps between sections, and safe climbing practices further reduce the effective height.

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Why 24-Foot Extension Ladders Work for Most 2-Story Homes

Most two-storey homes require a 24-foot extension ladder, as this size typically offers sufficient height to reach upper gutters or rooflines — along with the extra 3 feet needed to extend safely beyond the edge for secure access. Given that the average two-storey house in the UK stands between 5.5 and 6.5 metres (around 18 to 21 feet) tall, a 7-metre (23-foot) ladder generally provides adequate reach while maintaining recommended safety clearances.

That said, your specific requirements may vary depending on factors such as the precise height of your home, the condition of the ground, and the nature of the tasks you intend to carry out.

Understanding Ladder Sizes

Choosing the right ladder involves far more than just matching the numbers on the label to your wall height. Proper ladder sizing is a precise process that ensures both safety and practicality for homeowners carrying out maintenance tasks.

Why Ladder Size Matters for 2-Story Houses

Using a ladder of the wrong size can have serious consequences, particularly when working at the height of a two-storey house. A ladder that’s too short forces you to stretch unsafely, increasing the risk of instability. On the other hand, a ladder that’s too long can be cumbersome and difficult to position correctly.

For homeowners with two-storey properties, it’s essential to recognise that the average UK house of this kind measures between 5.5 and 6.7 metres in height, with roof peaks sometimes reaching up to 7.3 metres. Therefore, your ladder must not only reach this height but also extend at least one metre beyond the roof eaves to provide a secure handhold when stepping on or off the roof.

How Ladders Are Measured

Ladder measurements can be misleading for first-time buyers, as the advertised length doesn't directly reflect the usable height. It’s important to understand that a ladder’s stated length is not the same as its maximum reach.

Several factors influence a ladder’s practical working height:

• Overlap reduction: Extension ladders consist of overlapping sections, which reduces usable length by roughly 3 feet.
• Angle positioning: When positioned at the recommended 75-degree angle, the vertical reach is around 97% of the ladder’s length.
• Safe standing level: The highest safe standing point is typically four rungs down from the top.

Manufacturers generally estimate reach based on an average person standing 5'6" tall with a vertical reach of around 12 inches. As a result, a 24-foot extension ladder typically offers a working reach of approximately 23 feet.reach.

UK Ladder Height Regulations (At a Glance)

Contrary to popular belief, there is no specific maximum height restriction for ladder use in the UK. In fact, the Health and Safety Executive (HSE) permits ladders to be used at any height, provided they are suitable for the task. However, for work above 9 metres, it is recommended to incorporate rest platforms or landing areas.

The core regulations prioritise safe practice over strict height limits. Key safety guidelines include:

• Follow the 4-to-1 rule: For every 4 feet of height, the ladder’s base should be positioned 1 foot away from the wall.
• Maintain three points of contact: At all times, users should keep either two hands and one foot, or two feet and one hand on the ladder.
• Extend the ladder beyond the access point: The ladder should project at least three rungs above the highest surface being reached.

Understanding these principles is essential when determining how tall a ladder needs to be for your particular property and task.ladder do I need?" based on your specific two-story house dimensions rather than relying on generic estimates.

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The Ideal Ladder Size for a Two-Story House

Measuring the height of your home is the first practical step in identifying how tall a ladder you’ll need. Let’s take a closer look at the typical dimensions and key recommendations for safely accessing a two-storey house.

Standard Height of a 2-Story Home

A typical two-storey house generally measures between 20 and 25 feet in height. This figure refers to the distance from ground level to the roofline and excludes chimneys or other elevated structures. More precisely, most two-storey homes fall within the 20 to 22-foot range.

Several factors can influence the overall height:

• Traditional builds usually fall within the 20–25 ft bracket
• Homes with higher ceilings may reach 24–26 ft
• Steep-pitched roofs can add a further 2–4 ft
• Raised foundations may increase height by 1–3 ft

In some areas, you may come across two-storey properties as low as 16 feet, although most local building codes require a minimum height of around 18 feet.

Why 24-Foot Extension Ladders Are Recommended

For safely accessing a two-storey home, a 24-foot extension ladder is typically the most suitable choice. This recommendation is based on a simple yet essential principle: to safely reach a height of 20 feet, you’ll require a ladder that’s approximately 4 feet longer than your target height.

The difference between the ladder’s total length and its effective reach is due to two key factors:

• Extension ladders require overlapping sections to ensure structural stability
• The 4:1 positioning rule reduces vertical reach due to the ladder’s angled placement

In addition, safety guidelines state that a ladder should extend at least 3 feet beyond the roofline or access point, providing secure handholds when transitioning on or off the surface.

A 24-foot extension ladder typically delivers a reach of around 23 feet, making it well-suited for the average two-storey property measuring between 20 and 22 feet in height.

When You Might Need a 28-Foot Ladder

In certain circumstances, a ladder longer than the standard 24-foot model may be required. A 28-foot extension ladder — offering a reach of approximately 27 feet — becomes necessary in the following scenarios:

• Your home has particularly high ceilings that exceed typical dimensions
• The property features a steep gable roof that adds considerable height
• You need to access tall chimneys or other elevated structures
• The house is situated on sloped ground, increasing the effective height
• Landscaping or physical obstructions prevent ideal ladder placement

In fact, many professional contractors keep both 24-foot and 28-foot ladders on hand to accommodate the varying demands of two-storey buildings. For exceptionally tall or uniquely designed homes, you may even need to consider a triple extension ladder to achieve the required reach.

Ultimately, the most accurate way to determine the correct ladder height is by measuring your specific property rather than relying on general averages. This tailored approach ensures maximum safety and suitability for the tasks at hand.

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Different Types of Ladders Explained

To begin with, it’s essential to understand the different types of ladders when determining how tall a ladder you’ll need for a two-storey house. Each design serves a specific purpose and offers distinct advantages depending on the maintenance task at hand.

Step Ladders: Pros and Limitations

Step ladders feature a self-supporting A-frame structure, meaning they do not require support from a wall. Typically ranging from 4 to 10 feet in height, they provide an estimated reach approximately 4 feet greater than their physical height. For instance, a 6-foot step ladder offers a working reach of around 10 feet.

Advantages: Step ladders are highly stable, owing to their wide base and rubberised feet which reduce the risk of slipping. Their lightweight and portable design makes them ideal for indoor tasks such as painting coving or replacing ceiling lights. Many models also include built-in tool trays for added convenience.

Limitations: Standard step ladders are not designed for accessing second-storey heights, as their reach is typically limited to around 14 feet when using a 10-foot ladder. Additionally, they cannot be used safely on staircases unless specifically engineered for that purpose.

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Extension Ladders: Best for Multi-Storey Access

Extension ladders are made up of two or more sections that slide within one another, allowing for adjustable heights. Unlike step ladders, they must be positioned against a stable surface for support.

Ideal for two-storey access: A 28-foot extension ladder is well-suited to most two-storey homes, providing a reach of approximately 25 feet when fully extended. It’s important to note that the top three rungs should never be used as steps for safety reasons.

Key feature: These ladders typically incorporate a rope-and-pulley mechanism for smooth and controlled height adjustment, making them essential for tasks such as cleaning gutters, painting exterior walls, and accessing roofs on two-storey properties.

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• ✔️ Foldable and portable – easy to transport and store
• ✔️ Adjustable working height for different elevation needs
• ✔️ Safer and more stable than traditional extension ladders

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Multipurpose Ladders: Flexibility and Function

Multipurpose ladders — also known as combination or articulating ladders — are equipped with hinges and telescopic legs, enabling them to be configured in a variety of ways.

Versatility benefits: These ladders can be adapted into step ladder, extension ladder, and even stairway configurations. This level of flexibility often eliminates the need to own multiple ladders.

Considerations: Before purchasing, be aware that multipurpose ladders are generally much heavier than single-purpose alternatives. According to user feedback, they can be “awkward to handle” and even “a bit of a nuisance” when fully extended.

Ultimately, the type of ladder you choose — and its required height — should be guided by the specific tasks you intend to carry out.

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The MiniScaff Solo Tower is a compact access solution designed for one-person assembly. Perfect for quick, safe access on low-level projects where stability and efficiency are key.

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• ✔️ Solo-setup design makes it perfect for individual use
• ✔️ Lightweight, efficient, and stable

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Choosing the Right Ladder for a 2-Story House

Choosing the right ladder begins with understanding your specific needs. Many homeowners find this decision challenging simply because they’re unsure where to start. Let’s break down the key factors to consider when selecting the most suitable ladder for your two-storey home.

Key Factors to Consider Before Buying

Finding the right ladder involves assessing several key factors. Start by identifying the specific tasks you’ll be undertaking — whether it’s painting external walls, clearing gutters, or accessing the roof — as each activity may require different ladder features.

Next, calculate the maximum height you’ll need to reach. For two-storey access, always ensure the ladder extends at least 3 feet (1 metre) above the highest point, allowing for a secure handhold during transitions.

Finally, consider the required weight capacity. This includes:

• Your body weight
• Clothing and any protective gear
• Tools and equipment you’ll carry
• Items temporarily stored on the ladder

Ladders are categorised by duty rating, based on their maximum load capacity:

• Type IAA: 375 lbs (Extra Heavy Duty)
• Type IA: 300 lbs (Extra Heavy Duty)
• Type I: 250 lbs (Heavy Duty)
• Type II: 225 lbs (Medium Duty)
• Type III: 200 lbs (Light Duty)

Always choose a ladder that safely supports the combined weight of both user and equipment.

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The 3T (Through The Trapdoor) Tower ensures maximum safety by allowing users to install guardrails before advancing. Built for industrial-grade work, it’s reliable, compliant, and easy to assemble on-site.

• ✔️ Ideal for reaching the height of a two-story house
• ✔️ Sturdy and EN1004-certified structure
• ✔️ Equipped with professional-grade safety features including guardrails and stabilisers

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Recommended Ladder Sizes for 2-Story Homes (UK)

For the average UK two-storey house — typically measuring between 4.7 and 5.8 metres (around 15.5 to 19 feet) — an extension ladder between 3.0 and 7.0 metres is generally sufficient. In most cases, a 6 or 7-metre double extension ladder performs well for routine maintenance tasks.

Wherever possible, opt for a ladder that’s slightly longer than you believe necessary. This extra margin enhances safety without compromising stability or ease of use.

Best Ladder Materials: Aluminum vs. Fiberglass

The decision between aluminium and fibreglass ladders comes down to a few key considerations:

Aluminium ladders are valued for their lightweight and portable design, making them ideal for tasks that require frequent repositioning. They are generally more affordable and, in some models, can support loads of up to 500 pounds. However, as they conduct electricity, they should never be used near power lines or electrical sources.

Fibreglass ladders, on the other hand, provide excellent electrical insulation. When clean and dry, they are non-conductive, making them the safest option for work involving electrical equipment. While fibreglass models tend to be heavier and more expensive than their aluminium counterparts, they typically offer greater durability, especially in harsh or outdoor environments.

Ultimately, your choice should be guided by both the nature of your maintenance tasks and the safety requirements specific to your two-storey property.

Podium Steps

exc. VAT Rent from £29.99

The Podium Steps offer a secure and stable platform for low-level tasks. With enclosed guardrails and anti-slip surfaces, it's a safer and more convenient alternative to traditional step ladders.

• ✔️ Step ladder alternative
• ✔️ Low-level access with safety
• ✔️ Easy to carry and move
• ✔️ Limited working height – perfect for quick indoor or warehouse tasks

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Ladder Safety: Use It Right, Stay Secure

Using a ladder safely is just as important as selecting the correct size for your two-storey home. Even with a perfectly sized ladder, improper use can result in serious accidents and injury. Let’s explore the essential safety practices that every homeowner should follow to ensure secure and effective ladder use.

How to Position a Ladder Safely on a 2-Story House

Setting the correct angle is essential for ladder stability. Always apply the 4-to-1 rule — for every four feet of height, position the base one foot away from the wall. This achieves a safe angle of approximately 75 degrees, which helps maximise both stability and load-bearing capacity.

When accessing a two-storey property, make sure the ladder extends at least 3 feet (1 metre) above the roof eaves. This additional length provides a secure handhold when stepping on or off the roof.

Before climbing, check that both side rails are firmly supported on stable, level ground. If the surface is uneven, use ladder levellers or remove soil as needed to ensure proper balance. Wherever possible, secure the ladder at the top or bottom to prevent slipping — particularly in areas with foot traffic or frequent movement.

Top Safety Precautions When Climbing High Ladders

Maintaining three points of contact is absolutely essential — always ensure that either two hands and one foot, or two feet and one hand, are in contact with the ladder at all times. This significantly enhances stability and greatly reduces the risk of falling.

Additional key safety measures include:

• Always face the ladder when ascending or descending
• Keep your body centred between the side rails
• Never stand on the top three rungs of an extension ladder
• Avoid overreaching — instead, climb down and reposition the ladder
• Wear a tool belt to keep your hands free while working

By following these guidelines, you’ll greatly improve both safety and efficiency during any task.

The Importance of Ladder Stability & Angle

An incorrectly angled ladder can easily slip out from beneath you. Maintaining the ideal 75-degree angle offers the best resistance against the base sliding and ensures safe use.

Equally important is securing the ladder’s footing. Always place it on firm, stable ground and avoid slippery or soft surfaces. If soft ground is unavoidable, use a sturdy board beneath the ladder’s feet to distribute weight and improve stability.

Weather conditions have a significant effect on ladder safety. Never use a ladder in high winds, heavy rain, or snowy conditions. Additionally, always inspect the area for overhead power lines before setting up — maintaining a minimum clearance of 10 feet (approximately 3 metres).

By adhering to these safety principles, you’ll ensure that the correctly sized ladder for your two-storey home remains a reliable tool — not a potential hazard.

find the right 

Now that we’ve explored the key aspects of ladder selection, let’s bring everything together into a practical framework to help you determine the ideal ladder size for your two-storey home.

As we've seen throughout this guide, choosing the right ladder involves carefully weighing several important factors. To make the process simpler, here’s a clear and structured approach to help you make the best possible decision:

5-Step Ladder Sizing Decision Guide

1. Measure Your Home’s Exact Height
   Use a laser measurer or a tape measure (with assistance, if needed) to determine the precise height from ground level to the highest point you need to reach.
2. Add Your Safety Margin
   Once measured, add a minimum of 3 feet (1 metre) to ensure the ladder extends safely beyond your working height, allowing for stable and secure transitions.
3. Account for Positioning Distance
   Apply the 4:1 rule — for every 4 feet of height, position the ladder 1 foot away from the wall. For example, if the wall is 20 feet high, the base should sit 5 feet out. This positioning affects the vertical reach.
4. Consider Your Specific Tasks
   The type of work you’ll be doing also matters. Cleaning gutters or accessing the roof requires an extension ladder, whereas indoor jobs like painting may be better suited to a step ladder.
5. Factor in Storage Space
   Make sure you have suitable space to store your ladder when not in use. Extension ladders, in particular, require considerable horizontal storage due to their length.

For most standard two-storey UK homes, a 24-foot extension ladder offers the best balance between reach, safety, and ease of use. However, if your property has especially high ceilings or unique architectural features, you may wish to consider a 28-foot model.

As a practical tip, consider drawing a basic diagram of your home with key height measurements clearly marked. This visual reference will be extremely helpful when comparing specifications or speaking with ladder suppliers.

In summary:
✔ Measure accurately
✔ Prioritise safety
✔ Choose a slightly longer ladder than you think you need

This approach ensures your ladder is not only the right size but also a smart, long-term investment in safe and effective home maintenance.

Frequently Asked Questions (FAQs)