Overview
Every fire-rated door on a Lucknow hospital, hotel, school or high-rise project needs an intumescent seal in the frame or leaf edge; without it the doorset does not achieve its tested rating. Wedge Industries Limited supplies INTUF-family intumescent strips, combined fire-and-smoke seals with brush or fin, and intumescent putty and boards to fire-door OEMs, MEP contractors and door dealers across the region — and the same seals are fitted to the fire-rated doors assembled at the Wedge Hardoi plant.
Fire-safety regulation is tightening in Uttar Pradesh and the NBCS 2026 exit-door requirements adopted in Delhi are the reference for consultants specifying certified doorsets with intumescent seals.
Intumescent fire seal specifications
| Property | Value |
|---|---|
| Product family | Intumescent fire seals and passive fire protection (INTUF grades) |
| Fire rating applications | FD30 / FD60 / FD90 / FD120 (application dependent) |
| Expansion ratio | Up to 10× original volume on heat exposure |
| Activation temperature | 150°C – 200°C |
| Strip sizes | 10 × 4 mm · 15 × 4 mm · 20 × 4 mm · custom |
| Forms | Strip · Tape · Combined fire-and-smoke seal (brush/fin) · Putty · Board (1200 × 600 mm) |
| Compliance | BS 476, EN 1634, IS 3614 |
| Substrates | Timber, steel, aluminium, uPVC frames; self-adhesive backing |
Full technical data sheet, standards compliance and test certificates are supplied with the quotation.
Intumescent strip price
Seals are priced per metre by size and grade, in 2.1 m door-set lengths or coils. Fire-door manufacturers and contractors in Lucknow, Kanpur and Agra can request project pricing per doorset; boards and putty are quoted per sheet and per cartridge.
Applications in Lucknow and the region
- Fire-door leaf and frame seals on hospitals, hotels, schools and high-rise residential in Lucknow
- Fire-door OEMs and dealers in Kanpur and Agra supplying certified doorsets
- Retrofit of existing exit doors to meet fire-NOC and audit findings
- Glazing and letter-plate seals, electrical box and cable-tray closures
- Intumescent boards and putty for small service penetrations (see Firestop package)
Installation and specification notes
Strips are pressed into a routed groove in the frame or leaf edge or surface-fixed with the self-adhesive backing on a clean, dry surface; mitre at corners and keep continuous. Pair the seal grade with the tested door design (WFD30/60/90/120 with FP1000, WedgeMAG or FP60/FP120 boards and HDRW 850 infill) — the seal is part of the tested assembly, not an accessory.
Supply and delivery across the Lucknow – Kanpur – Agra belt
Wedge Industries Limited is building a regional sales, estimating and stock base for Lucknow, Hardoi, Sandila, Kanpur, Unnao, Barabanki and Agra. Qualified firestop and fire-seal pilot materials are part of the regional opening stock; doors are assembled at Hardoi. Bulk panels and large board orders can be dispatched direct from the manufacturing works to site where that is cheaper; consolidated deliveries run on fixed days to Lucknow, Kanpur, Unnao and Barabanki.
Typical buyers in this region: sugar mills in Hardoi and Sitapur, food and consumer-goods plants in Sandila and Barabanki, tanneries and process units in Unnao, foundries and engineering works in Kanpur, cold stores in the potato belt (Hardoi, Kanpur, Unnao, Farrukhabad, Agra), and MEP, fire and interior contractors on Lucknow hospital, hotel, school and office projects.
Why buy from Wedge Industries Limited
- Manufacturing and finishing in Faridabad (Delhi NCR), with group operations in the UK, Spain and China and exports to 45+ countries.
- One supplier for insulation, passive fire protection, acoustics, boards and refractory repair materials — fewer vendors on the site.
- Technical data sheet, test certificates and a material test certificate issued with every order on request.
- Installation and application support through supervised partner crews for jackets, firestop, acoustic and enclosure work.
- GST invoice, regional delivery and a named estimator for the Lucknow region.
Frequently asked questions
Which intumescent strip do I need for an FD60 door?
A 15 × 4 mm or 20 × 4 mm strip in the frame or leaf edge is usual for FD60, but the correct size and grade follow the tested door design; send the door specification and Wedge will confirm.
Do the seals stop smoke as well as fire?
Combined fire-and-smoke seals add a brush or fin to the intumescent strip and are the normal choice for hospital and hotel corridors.
Are the seals certified?
The seals are tested to BS 476 and EN 1634 and referenced to IS 3614; test reports are supplied with the quotation and must be read with the door’s own test evidence.
Can existing doors in a Lucknow hospital be retrofitted?
Yes. Surface-fixed self-adhesive seals retrofit to timber and steel doors without specialist tools; a survey lists the doors and sizes.
Do you also supply fire doors?
Yes — Wedge assembles fire-rated, acoustic and security steel doors at its Hardoi plant; see the fire-rated doors page for the Lucknow region.
Related products and pages
- Intumescent Strips
- Fire Seals & Passive Fire Protection
- Fire-Rated Steel Doors — Lucknow
- Firestop Penetration Seals — Lucknow
- All Wedge Lucknow Products
- Full product catalogue
Get a quotation for Intumescent Fire & Smoke Seals in Lucknow, Hardoi, Sandila, Kanpur, Unnao, Barabanki and Agra
Send the quantity, sizes and delivery site and Wedge Industries Limited will quote within 24 hours with a GST invoice and regional delivery.
