A putlog scaffold is a traditional type of scaffolding commonly used for bricklaying and masonry work. Also known as a bricklayer’s scaffold, single scaffold or dependent scaffold, it consists of one outer row of vertical standards, with the inner ends of the horizontal supports resting on or within the building’s masonry.
Unlike independent scaffolding, which generally uses two rows of standards, a putlog scaffold relies partly on the building itself to support the working platform. This makes it a relatively simple arrangement that can require fewer scaffolding components when the structure and site conditions are suitable.
Putlog scaffolding has traditionally been used during the construction of brick walls, allowing bricklayers to work at different heights as the building progresses.
How Does a Putlog Scaffold Work?
The main difference between a putlog scaffold and other types of scaffolding is how the working platform is supported.
A putlog scaffold uses one row of vertical standards positioned away from the building. Horizontal members extend from this outer framework towards the wall, where their inner ends are supported by the masonry.
The main components include:
- Standards: Vertical steel tubes positioned in a single row parallel to the building. These transfer loads from the scaffold down to suitable foundations.
- Ledgers: Horizontal tubes running along the length of the scaffold, connecting the standards and supporting the putlogs.
- Putlogs: Short horizontal tubes extending from the ledgers towards the building. Their flattened or specially adapted ends can rest in suitable brickwork joints or other approved support positions.
- Couplers: Metal fittings used to connect scaffold tubes securely together.
- Scaffold Boards: Boards positioned across the horizontal supports to create the working platform.
- Bracing and Ties: Components used to provide stability and secure the scaffold in accordance with its design.
When traditional putlogs are inserted into masonry joints, the wall supports their inner ends while the outer standards provide support at the opposite side.
As construction progresses, additional scaffold lifts can be erected to provide access to the next working height.
The number of components needed depends on the building dimensions and scaffold arrangement. Our guide explaining how to estimate scaffolding quantity covers the measurements and considerations involved in planning a scaffold.
What Is Putlog Scaffolding Used For?
Putlog scaffolding is mainly associated with brickwork, although it can provide access for other building activities where the supporting structure is suitable.
Bricklaying and New Construction
Bricklaying is the most traditional application of putlog scaffolding. The scaffold can be erected alongside a developing brick wall, with additional working platforms introduced as construction progresses.
This allows bricklayers to work from a platform positioned close to the wall while keeping bricks, mortar and tools within convenient reach, subject to the scaffold’s permitted loading.
Repointing and Masonry Repairs
Putlog scaffolding may also be considered for repointing and masonry repairs on existing buildings.
However, the condition of the brickwork must be assessed before using it to support putlogs. Old mortar, damaged bricks or unstable masonry may make this arrangement unsuitable.
Rendering and Plastering
External rendering and plastering often require access along a building’s walls.
Where the structure can safely accommodate the support arrangement, a putlog scaffold may provide access for these activities. However, an independent scaffold may be preferable where uninterrupted access to the wall surface is required.
Low-Rise Building Projects
Traditional single scaffolding can be practical for straightforward low-rise construction projects where space, loading and structural conditions allow.
For larger or more demanding projects, a different scaffold configuration may provide a more suitable solution.
What Are the Advantages of Putlog Scaffolding?
Fewer Scaffolding Components
One of the main advantages of putlog scaffolding is that it usually requires fewer standards and horizontal components than a comparable double-row scaffold.
Because the building supports the inner ends of the putlogs, a second row of standards is not normally required.
Potentially Lower Installation Costs
Using fewer materials can reduce the amount of equipment needed for installation, transportation and dismantling.
This may make putlog scaffolding more economical for suitable bricklaying projects. However, the overall cost still depends on the scaffold design, working height, access requirements and condition of the supporting masonry.
Suitable for Progressive Brickwork
Putlog scaffolding can be extended as a wall is constructed, allowing working platforms to follow the progress of the bricklayers.
This makes it particularly relevant to traditional brick and block construction.
Practical Working Access
With the platform positioned close to the wall, bricklayers can work along the masonry without needing to reach across a large gap.
The platform must still provide sufficient working space, safe access and appropriate edge protection.
What Are the Disadvantages of Putlog Scaffolding?
Despite its advantages, putlog scaffolding is not appropriate for every building.
Dependence on the Building
The biggest limitation is that the wall must be capable of safely supporting the loads transferred through the putlogs.
Weak masonry, deteriorating mortar or a structure that has not been assessed for the proposed loads can make a putlog scaffold unsuitable.
Putlog Holes in Brickwork
Traditional putlogs may be inserted into mortar joints or openings within the brickwork.
Once the scaffold is dismantled, any remaining putlog holes must be properly repaired. Poorly filled openings can allow moisture to enter the wall and may affect its appearance.
Limited Suitability for Certain Projects
Some buildings cannot accommodate putlog supports because of their construction, condition or architectural features.
The scaffold can also be less practical where extensive work is required directly around the putlog support positions.
Regular Alterations During Construction
As brickwork progresses, the scaffold may need to be raised or altered.
These changes must be properly planned and carried out by competent scaffolders. They must not compromise the support arrangements, ties or stability of the existing structure.
What Is the Difference Between Putlog and Independent Scaffolding?
The main difference is the way each scaffold supports its working platforms.
A putlog scaffold generally has one row of standards and relies partly on the building for support. An independent scaffold normally uses two rows of standards, with the platforms supported by the scaffold framework rather than by putlogs inserted into the wall.
An independent scaffold may still need ties to the building to provide stability, even though it does not rely on the wall to carry the inner platform loads.
Putlog scaffolding is traditionally associated with straightforward bricklaying, while independent scaffolding is widely used for general construction, refurbishment, stonework and building maintenance.
Neither system is automatically better in every situation. The appropriate choice depends on the building, available space, expected loads and work being carried out.
We provide further information about both arrangements through our single and double scaffolding services.
Is Putlog Scaffolding Safe?
Putlog scaffolding can provide a suitable working platform when it is correctly designed, erected, supported and maintained.
However, its reliance on the building introduces important structural considerations.
Before installation, a competent person must establish that the masonry can safely support the proposed arrangement. The assessment also needs to consider ground conditions, platform loads, bracing, ties and the effects of wind.
Working platforms require suitable guardrails and other protective measures based on the risks involved.
Toe boards are particularly important where bricklaying materials, tools or loose debris could fall from the platform. Our article explaining the purpose of toe boards on scaffolds describes how these components help protect workers and people below.
Scaffolding used for construction must also be inspected by a competent person before first use, at intervals not exceeding seven days, and following circumstances likely to affect its safety, such as substantial alterations or adverse weather.
Putlogs must never be removed or repositioned without appropriate authorisation and competent assessment. Removing a support could compromise the working platform and scaffold stability.
Does Putlog Scaffolding Need a Special Design?
The design requirements depend on the proposed scaffold arrangement and the conditions of the building.
A putlog scaffold must have a suitable basis for its design, including verification of the support provided by the masonry. Where the arrangement is not covered by an appropriate recognised configuration, a bespoke design may be necessary.
Important considerations include the masonry’s load-bearing capacity, scaffold height, working platform loading, tie positions and the sequence of construction.
Our scaffolding design services cover the planning and structural considerations involved in creating suitable access arrangements for different construction projects.
Are Putlog Scaffolds Still Used Today?
Yes. Putlog scaffolding remains a recognised traditional scaffolding arrangement, particularly for brickwork where the building can safely support it.
However, independent scaffolding is often a more practical choice for modern refurbishment and construction projects.
An independent scaffold avoids the need to insert putlogs into masonry joints and can be suitable for a wider range of building conditions.
The decision should always be based on a proper assessment of the structure, rather than simply choosing the scaffold that uses the fewest components.
Putlog Scaffolding FAQs
Why Is It Called a Putlog Scaffold?
The name comes from the putlogs, which are horizontal members used to support the working platform. Traditionally, their inner ends are inserted into openings or mortar joints within the masonry.
Is a Putlog Scaffold the Same as Single Scaffolding?
The terms are often used interchangeably. Traditional single scaffolding commonly uses one row of standards, with the building providing support for the inner ends of the putlogs.
Can Putlog Scaffolding Be Used on Old Buildings?
It may be possible, but the supporting masonry must be assessed first. Deteriorating brickwork, weak mortar and heritage considerations can make other scaffolding arrangements more appropriate.
Does Putlog Scaffolding Damage Brickwork?
Traditional putlogs inserted into masonry joints can leave openings when removed. These must be carefully repaired to restore the wall and prevent moisture entering the building.
Is Putlog Scaffolding Cheaper Than Double Scaffolding?
It can be cheaper because fewer components may be required. However, any savings depend on the building’s suitability, project requirements and installation arrangements.
Choosing the Right Scaffolding for Your Project
Putlog scaffolding is a traditional and relatively straightforward access system that remains useful for certain bricklaying and masonry projects.
Its single row of standards reduces the amount of equipment required, while the building itself provides support to the inner ends of the working platform members.
However, the condition and strength of the masonry are essential considerations. A putlog scaffold should only be used when its support arrangement has been properly assessed and confirmed as suitable.
At AMA Scaffolding, we provide professional scaffolding solutions across London and Essex, including scaffolding services in Epping and surrounding areas.
Whether your project requires traditional single scaffolding, an independent scaffold or a more specialised access arrangement, we can assess your requirements and help identify a suitable solution.
