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Fire Stopping Guide
Socket Putty Pads: What They Are and Where They’re Used
Socket putty pads are specialist passive fire protection products used in suitable tested systems around electrical back boxes installed in fire-resisting walls. They are intended to help maintain the performance of the partition where the socket opening would otherwise affect the construction.
Use this guide as a practical introduction, then check the relevant tested system and manufacturer documentation before selecting or installing a product.
Use This Guide
Understand the principle first
Use this guide as a practical introduction, then check the relevant tested system and manufacturer documentation before selecting or installing a product.
Electrical Penetration Guide
Quick Guide
Socket putty pads are specialist passive fire protection products used in suitable tested systems around electrical back boxes installed in fire-resisting walls. They are intended to help maintain the performance of the partition where the socket opening would otherwise affect the construction.
Key Points
What You Need to Know
Electrical Back Boxes
Recessed boxes can alter the wall build-up.
Tested Partitions
The wall system matters to product selection.
Box Arrangement
Opposing or closely spaced boxes may need specific details.
Correct Installation
Pad position and coverage should follow the tested system.
Key Principle
Why Socket Boxes Matter
Installing an electrical back box creates an opening and reduces the thickness of the wall lining at that location. In some fire-resisting constructions, this can affect the tested performance of the wall.
The significance depends on the partition build-up, socket arrangement and supporting system evidence.
Practical Guidance
What Is a Socket Putty Pad?
A putty pad is a mouldable fire protection product designed to fit around or within a suitable electrical box arrangement. Product designs and installation methods vary.
Some are fitted externally around a box before the wall is closed, while others may be installed from the room side. The relevant manufacturer instructions should be followed.
Selection & Application
Where Are Putty Pads Used?
They are commonly associated with dry-lined or plasterboard partition systems containing recessed electrical boxes.
The number of boxes, whether they are back-to-back and the wall construction can all affect the permitted installation.
Important Detail
Selecting the Correct Product
Check the partition construction, box dimensions, orientation and required fire or acoustic performance before choosing a putty pad system.
Do not assume that any pad can be used with any socket box or wall construction.
Relevant Products
Explore Related Product Ranges
Use the guide to understand the application, then browse the relevant Fire Protection Direct product categories.
Frequently Asked Questions
Frequently Asked Questions
A socket putty pad is a specialist fire protection product used in suitable systems around electrical back boxes in fire-resisting partitions.
Recessed boxes can reduce or interrupt the wall lining at the socket position, which may affect the fire performance of some partition systems.
Not necessarily. Requirements depend on the tested wall construction, box arrangement and system evidence.
Some products also have acoustic applications, but performance should be confirmed from the relevant manufacturer documentation.
Some systems allow retrofit installation while others are fitted during construction. Follow the specific product instructions.
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