Last updated: 2 July 2026
1Introduction
Most partitions just divide a space. A fire rated wall has a second job: when a fire starts on one side, it has to hold the flames and smoke back long enough for people to get out and for Bomba to arrive. That is what separates a normal gypsum board partition from a fire-rated one — the same-looking wall, built to a tested standard.
This guide explains it the way a contractor would: what fire rated drywall is, how the hour ratings work, where the Malaysian rules come from, and what makes one wall cost more than another. It is about understanding the choice, not a price list — every real figure depends on your building. When you need a wall measured and certified, our fire-rated partition team can help.
The video below shows how this works in practice.
How to install GypWall Classic – The definitive metal stud partition system
Source video: British Gypsum on YouTube
2What Is Fire Rated Drywall?
Quick Answer: Fire rated drywall is a partition or lining system built to resist fire for a set number of hours. It uses fire-rated gypsum board — a board with a glass-fibre-reinforced core — fixed to a metal-stud frame, often with mineral wool in the cavity and fire-rated sealant at every joint and service penetration. The whole assembly is tested as one certified system.
Think of it as an upgraded drywall build. The frame and boards look much like an ordinary partition, but three things are different, and all three matter:
- The board is different. Fire-rated gypsum board has a glass-fibre-reinforced core that stays stable in a fire far longer than a standard board, which crumbles once the heat gets in.
- The layers can double. A one-hour wall is often a single fire board each side; a two-hour wall usually needs two layers each side. The rating decides the build, not the other way round.
- The gaps are sealed. Fire follows gaps. Joints, the wall perimeter, and every pipe or cable that passes through are sealed with fire-rated products so smoke cannot sneak past.
This is why you cannot simply add a thicker board to a normal wall and call it fire-rated. The rating belongs to the tested system — the exact board, layers, frame, fixings, and joint treatment together. Change one part and the rating no longer holds. It is a different job from a plain drywall partition versus a brick wall decision, and different again from choosing a wall for quiet, which our guide on how soundproof a gypsum partition is covers.
3How Fire Ratings Work: FRP & the EI Criteria
Quick Answer: A wall’s fire resistance is measured as a fire resistance period (FRP) in minutes or hours — commonly ½, 1, 2, or 4 hours. A non-loadbearing partition is judged on two things: integrity (it stops flames and hot gas passing) and insulation (the far side stays cool enough). So a wall rated “60 minutes” holds both for a full hour under test.
The rating comes from a furnace test on the whole assembly, not a guess. The longer the wall keeps both jobs going, the higher the FRP. The table below shows how the build usually steps up as the required rating climbs — treat it as a guide, since the exact certified system is confirmed for your project:
| Fire resistance period | Indicative build | Where it is commonly used |
|---|---|---|
| 30 minutes (½ hour) | Single fire board each side on metal studs | Some internal separating walls |
| 60 minutes (1 hour) | Single fire board each side, system-certified | Unit separations, escape corridors |
| 90 minutes | Upgraded board or part second layer | Higher-risk separations, plant areas |
| 120 minutes (2 hours) | Double fire board each side | Compartment walls, risers, high-rise |
Source: Indicative fire-rated builds by FRP, Hypro Renovation reference, Klang Valley, 2026. A planning guide only — the certified system, board and layers are confirmed for your building. Four-hour systems exist for special separations.
One more term you will hear: loadbearing walls add a third letter, “R”, for the structure they carry, but most partitions are non-loadbearing, so integrity and insulation are what matter. If you are weighing one rating against another, our companion guide on the 1-hour vs 2-hour rating walks through when each is called for.
Not sure what rating your wall needs?
Tell Hypro where the wall sits and what is on each side, and we will confirm the fire resistance period your building calls for, then build and certify the right system — board, layers, sealing and all. See our fire-rated partition work →
4Standard Drywall vs Fire Rated Drywall
Quick Answer: A standard drywall partition and a fire rated one share the same metal-stud shape, but differ in the board, the layers, the cavity, and how the gaps are sealed. A standard wall divides space and gives basic privacy; a fire rated wall is tested to hold fire and smoke back to a set period, so it is used wherever a building code or Bomba requirement applies.
The table sets the two side by side across the parts that actually change, so you can see where the extra cost and care go on a fire-rated build:
| Part of the wall | Standard drywall | Fire rated drywall |
|---|---|---|
| Board core | Standard gypsum | Glass-fibre-reinforced fire board |
| Board layers | Usually single each side | Single or double, set by rating |
| Cavity | Often left empty | Often mineral wool infill |
| Joints & penetrations | Standard jointing | Fire-rated sealant, collars, batts |
| Rated for fire | No | Yes — to a tested FRP |
| Typical use | Plain room divider | Separating and compartment walls |
Source: Indicative comparison of standard and fire rated drywall, Hypro Renovation reference, 2026. General guidance — your contractor confirms the exact certified system for your building.
Read it by the job. If the wall is just splitting a room, a standard build is fine, and other partition types like an aluminium partition may suit better. But the moment the wall sits on a fire-separation line, only a certified fire-rated system will pass — which is exactly what our fire rated partition service is built to deliver.
5What Drives Fire Rated Drywall Cost
Quick Answer: Fire rated drywall cost is driven most by the required rating, because moving from one hour to two usually doubles the board layers. After that come any fire-rated doors and vision panels, the board type and thickness, the sealing of joints and penetrations, mineral wool infill, and the wall’s height and area. The rating you need sets nearly everything else.
To show where the money tends to go, here is a relative impact index — the required rating is set at 100, and each other driver is scaled by how strongly it tends to move a fire-rated wall’s cost:
| Required fire rating | |
| Number of board layers | |
| Fire-rated doors & glazing | |
| Board type & thickness | |
| Joint & penetration sealing | |
| Mineral wool & wall height |
Source: Indicative relative cost-driver index (required rating = 100). Illustrative guide for what tends to move fire rated drywall cost, Hypro Renovation, 2026 — not a measured score; your project may differ.
Read it as direction, not exact maths. The rating sits at the top because it decides the layers, the board, and often the doors all at once. Fire-rated doors and vision panels surprise many owners — a certified doorset costs far more than an ordinary door. Good workmanship on the frame and boards, the same care our gypsum partition wall installation guide describes, keeps the rest of the spend under control.
Want a clear, itemised fire-rated quote?
Hypro measures on site, confirms the rating your building needs, and quotes the boards, framing, sealing and any fire doors as one clear figure — so you know what each part costs before you commit. Ask Hypro for a quote →
6Typical Fire Rated Drywall Jobs by Type
Quick Answer: A single one-hour separating wall is the lightest fire-rated job. A run of corridor lining or a set of unit-to-unit party walls sits in the middle, and a two-hour riser enclosure or a full floor of compartmentation with fire doors is the biggest. The total depends on the rating, the wall area, and how many penetrations and doors are involved.
The table maps common fire-rated jobs to a rough scope and an indicative spend band, so you can picture where a project might land before you get a real quote:
| Typical job | Rough scope | Indicative spend band |
|---|---|---|
| Single separating wall (1 hr) | One rated partition between rooms | Lightest spend |
| Corridor / escape-route lining | Rated run along a passage | Low–mid |
| Unit-to-unit party walls | Several rated walls + penetrations | Mid |
| Riser / shaft enclosure (2 hr) | Double-layer rated enclosure | Mid–high |
| Full-floor compartmentation | Many rated walls + fire doors | Highest |
Source: Indicative fire-rated jobs by type, Hypro Renovation reference, Klang Valley, 2026. A planning guide only — every total depends on the rating, wall area, penetrations and doors.
Two jobs of the same wall area can cost very differently once the rating and the number of fire doors change. A single one-hour wall is a light spend; a full floor of two-hour compartmentation with certified doorsets climbs quickly. Whoever you use, it pays to vet a drywall partition contractor properly, since a fire wall built wrong can fail its Bomba inspection.
7Conclusion
Fire rated drywall is an ordinary-looking wall doing an extraordinary job — holding fire and smoke back for a tested number of hours so people can get out safely. The rating is measured, not guessed; it comes from a certified system where the board, the layers, and every sealed gap have been tested together. In Malaysia the required period follows the Uniform Building By-Laws 1984 and is enforced with Bomba, so the wall has to be built to the standard, not just to look right. Cost rises mostly with the rating, then the layers and any fire doors.
When you are ready to turn a plan into a real, certified wall, explore Hypro’s fire rated partition and drywall systems. Or start from the Hypro Renovation homepage for the full ceiling and partition range — from gypsum and glass partitions to plaster ceiling design ideas — across KL, Selangor and the Klang Valley.
8Frequently Asked Questions
What is fire rated drywall?
Fire rated drywall is a partition or lining system built to resist fire for a set period. It uses fire-rated gypsum board with a glass-fibre-reinforced core on a metal-stud frame, often with mineral wool in the cavity and fire-rated sealant at every joint and penetration. The whole assembly is tested and certified as one system, which is what gives it its hour rating.
How long does fire rated drywall last in a fire?
It is built to a fire resistance period, usually half an hour, 1, 2 or 4 hours. A wall rated for one hour is tested to keep flames and hot gas out (integrity) and its far side cool enough (insulation) for a full hour. The exact period your wall needs depends on where it sits in the building.
What are the Bomba rules for fire rated walls in Malaysia?
Fire requirements in Malaysia come from the Uniform Building By-Laws 1984, which set the required fire resistance period by building type and by element, such as compartment walls and escape routes. The Fire and Rescue Department of Malaysia, or Bomba, reviews and enforces these as part of a building's approval. Always tell your contractor early if a wall sits on a fire-separation line so the certified system meets the requirement.
Is fire rated drywall the same as a normal gypsum partition?
No. It looks similar but uses a certified fire board, often double-layered, with sealed joints and penetrations. A standard gypsum board partition divides space but is not tested to hold fire back. You cannot upgrade a normal wall to a fire rating by adding one board — the rating belongs to the whole tested system.
How much does fire rated drywall cost?
There is no single price, because the cost is driven by the rating, the number of board layers, any fire-rated doors, the sealing work, and the wall area. A one-hour wall costs less than a two-hour one, and certified fire doors add the most per unit. The honest way to get a figure is a site measure and quote.
Ready for a certified fire-rated drywall quote?
Hypro Renovation designs, supplies and installs fire rated partitions and drywall across KL, Selangor and the Klang Valley. CIDB-certified, the right system for your required rating, sealed to standard, every part priced clearly, and a clean, on-time install. Tell us about your wall and we will quote it properly.