The Tenmat OverSleeve is a universal, one-product-fits-all solution for the firestopping of combustible and insulated metal pipes.

The thin and flexible intumescent is quickly and simply wrapped directly around combustible pipes or directly on top of pipe insulation without the need to cut back the insulation, ensuring that thermal and vapour seal performance is maintained.

The red branded foil can be easily checked and identified on site to confirm that firestopping is in place.

The unique FF107 intumescent material rapidly expands to seal off combustible pipes or the insulation around non-combustible pipes to provide up to EI240 minutes fire rating.

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• Product Dimensions
• General Fitting Instructions
• Examples of Approved Applications
• Fire Test Data

Product Dimensions

General Fitting Instructions

For detailed fitting instructions for various applications please contact our technical team on 0113 2455450 (option 2) or send a message to [email protected].

Partitions, Solid Walls and Solid Floors:

1. Ensure the aperture through the wall or floor and the outside of the pipe/ pipe insulation is clean and free from dust and debris.
2. Measure the circumference of the pipe/pipe insulation and calculate the correct length of OverSleeve required taking into account the number of layers needed. Ensure sufficient length is available to create as a minimum a tight butt joint with the meeting edges of the OverSleeve once it is wrapped around the pipe.
3. Cut the OverSleeve to length using a sharp knife, ensure a straight cut to avoid leaving any gaps once wrapped around the pipe.
   • Wrap the OverSleeve around the pipe to achieve the correct number of layers required (see performance tables in data sheet)
   • For larger pipe diameters which require >1000mm length of OverSleeve, the length can be made up of more than length of OverSleeve and the join sealed with the supplied glass scrim reinforced repair tape, minimum 200mm wide strip
   • Once the OverSleeve is wrapped around the pipe, then use the supplied glass scrim reinforced repair tape to secure in place. A 200mm length of repair tape should be used with min. 100mm overlap
4. Once positioned on the pipe, slide the OverSleeve into position ensuring that the correct protrusion is achieved either side of the wall or the underside/soffit of the floor.
5. Any remaining annular gaps up to 15mm in Partition / Solid Walls / Concrete Floors must be filled with intumescent sealant, see performance tables in data sheet for correct type, depths and detail.

Ablative Coated Panels / Batts:

• The Ablative Coated Panels/Batts must be cut to ensure a snug fit around the OverSleeve with all joints between the OverSleeve and the panel/batt to be sealed with a 3mm bead of sealant
• Ensure the OverSleeve is centralised within the panel/batt and ensure that the correct minimum protrusion of OverSleeve is achieved on both sides of the wall (see performance tables for more information
• The panels/batts must be installed in a lined aperture, see performance table notes for correct details of aperture lining. Otherwise follow the Ablative Coated Panel / Batt manufacturer details for the correct installation into the wall

Examples of Approved Applications

• Combustible Pipes up to 160mm
• Pipe Materials including PVC-U, PVC-C, HDPE, ABS, PP
• Non-Combustible Pipes from 15mm to 219mm
• Copper, Steel and Cast Iron Insulated Pipes
• Phenolic Foam or Glass Mineral Wool Pipe Insulation
• Insulation thickness range 15 mm - 50 mm
• Suitable for Drywall/Plasterboard Partitions, Ablative Coated
• Fire Batts, Solid Walls and Concrete Floors
• Lubrizol Approved
• FBC System Compatible

Fire Test Data

For further details please see the Prodicy data Sheet (downloadable from the data sheets tab) or contact our technical team on 0113 2455450 (option 2) or send a message to [email protected].

IMPORTANT FIRE PRODUCTS NOTICE:  The information displayed on this website should be used as a guide ONLY and  our Technical Department should be contacted to obtain a tailored specification and any advice necessary before you place an order for fire protection products. Fire protection products are non-returnable except in accordance with  Condition 8 of the Terms and Conditions .  We will not be held liable for any resulting damage to property, human life or monetary costs incurred due to the incorrect specification you have prepared or use of fire protection products caused by your negligence, including your failure to have contacted us to obtain the relevant advice/specification.