The installation of intumescent fire and ambient temperature smoke seals around fire door assemblies is essential to meet the requirements of the Building Regulations. For some applications fire only seals are acceptable but for life safety smoke control is essential. Once activated intumescent seals will contain hot smoke but cold smoke protection requires the addition of a cold smoke seal which is normally incorporated into the intumescent seal.

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• Features & Benefits
• Availability
• Installation

Features & Benefits

• Formulation based on expandable graphite
• Seal is supplied in a PVC casing
• Unaffected by atmospheric moisture, unlike many other types of intumescent material - does not require any further protection
• Immune to degradation by carbon dioxide in the atmosphere
• Contains a high density ambient temperature pile seal which has a polypropylene fin for improved smoke and air control at lower temperatures
• Also designed to perform the function of a conventional draught seal in daily use

Availability

The following items are made to stock and are available on a 1-3 working day delivery option:

• White - 10mm x 4 mm x 2100mm
• Brown - 10mm x 4 mm x 2100mm
• Brown - 15mm x 4 mm x 2100mm

All other sizes and colours are Special Order with an extended lead time of approximately 20 Working Days

Installation

Therm-A-Stop intumescent fire and ambient temperature smoke seals are available in PVC holders which are 4 mm nominal (actual 4.3 mm). For most latched single-leaf, single swing 30 minute (FD30S) timber fire resisting door assemblies, a single 10 mm x 4 mm or 15 mm x 4 mm strip down each jamb and across the head will usually be satisfactory.

Most latched single-leaf, single swing 60 minute (FD60S) timber fire resisting door assemblies will satisfy the requirements of BS476 : parts 20 and 22 (1987) test procedures when fitted with a single 20 mm x 4 mm strip across the head and down both jambs. Tests carried out to BS EN 1634-1 often require more specific solutions e.g. twin 15 mm x 4 mm seals to achieve a 60 minute rating.

The intumescent foam produced by Therm-A-Stop is designed to withstand high temperatures - so it is well suited to applications incorporating timber doors with steel frames where conventional intumescent foam compounds break down.

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 and should be applied only by an individual with the necessary expertise and experience. 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.