Putty pads can protect electrical box penetrations in fire-rated construction when used in a suitable tested arrangement. Check the wall, box and system documents before selection.
What is a firestop putty pad used for?
A firestop putty pad is a mouldable product used in specified arrangements to protect electrical box openings in fire-rated construction. The product and installation detail must be suitable for the wall, box and required fire performance. It is not ordinary filler for any opening.
Hilti’s technical guidance explains putty pads and box inserts as ways of protecting outlet-box membrane penetrations. The applicable product documentation defines the arrangement; the mere presence of a pad does not establish the rating of an entire wall.
When are putty pads required?
Determine the requirement from the applicable building requirements and the wall assembly or tested system being used. Relevant details include wall construction, box type and size, spacing and the proposed protection method. A qualified project reviewer should confirm the arrangement.
Do not apply one generic separation distance to every project. Hilti’s guidance describes specific listed conditions and exceptions. Use the current listing for the actual configuration rather than transferring a dimension from a different box or wall type.
What information should you send for selection?
Prepare a schedule of rated walls and electrical box locations. Include the wall construction, required rating, box dimensions, material, cable entries and spacing. Identify the specified firestop product and tested detail if these have already been selected.
For an existing building, supply drawings and clear photographs without assuming a photograph can prove a concealed installation. Ask which further site information is needed. Record unresolved conditions before procurement so the quotation is based on a defined arrangement.
- Wall construction and required fire rating
- Electrical box type, dimensions and positions
- Proposed product and tested installation detail
- Quantities, access and installation scope
How does Compliance BD support firestop enquiries?
Compliance BD supplies Hilti firestop products and discusses installation requirements for Bangladesh projects. Our published training certificate records training; it does not certify every proposed installation. Match the product selection to the project’s required tested arrangement.
Send your opening or box schedule to our Dhaka or Chattogram office. Ask for a proposal that identifies the materials, installation detail, quantities, inspection records and exclusions. Keep accepted drawings and installation records together for handover.
Manufacturer reference
The source below discusses listed arrangements and their limits. Confirm the current documents for your selected product and project.
Discuss your project with our team.
Share your drawings, BOQ and required scope with our Dhaka or Chattogram office.
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