Firestopping in Saudi Arabia: Choosing and Proving the Right Tested System

Introduction

There is a sentence heard on almost every construction site in the Kingdom: “Don’t worry, we used fire-rated sealant.”

It sounds reassuring. It usually is not.

A tube of firestop sealant does not carry a fire rating on its own. What carries a rating is the complete tested arrangement — the wall type, the item passing through it, the size of the gap around that item, the depth of material, the backing behind it, and the way it was installed. That whole combination is tested in a furnace as a package. Change any part of it and the test result no longer applies to what is on your wall.

This is the single most misunderstood point in passive fire protection, and it is the reason so many firestop packages are rejected at submittal stage or fail at Civil Defense inspection. The material was fine. The system was never the right one, or nobody could prove which one it was.

This guide explains, in plain terms, how tested firestop systems work, how to choose the right one for each condition on your project, and how to prove it in a way that survives review. Whether you are an MEP consultant, a QA/QC engineer, a main contractor or a facilities manager searching for Firestopping Services in Saudi Arabia, this is the practical picture from the field.

What a Tested Firestop System Actually Is

A firestop system is not a product. It is a documented, laboratory-tested assembly.

To create one, a manufacturer builds a full-size wall or floor in a test laboratory, puts a specific penetrating item through it, seals it in a specific way, and then subjects the whole assembly to a standard furnace fire followed by a hose stream test. If it performs, the laboratory issues a listing with a unique reference number.

That listing describes every variable, and every variable is binding:

• The barrier — concrete floor slab, block wall, gypsum wall, and its thickness and construction
• The penetrating item — steel pipe, copper pipe, PVC pipe, insulated pipe, single cable, cable bundle, cable tray, busbar, duct — and its maximum diameter
• The annular space — the gap between the item and the edge of the opening, with a minimum and maximum
• The firestop material — the specific product, by name
• The depth of material and the backing — mineral wool depth, backer rod, forming material
• The orientation — wall, floor, or both

The common testing standards you will see referenced are UL 1479 and ASTM E814 for through-penetration firestops, UL 2079 and ASTM E1966 for linear joints, and the EN 1366 series where a European-tested product is proposed. Structural fire resistance of the assembly itself is tested to ASTM E119 or equivalent.

Here is the part that matters on site: a listing for a 100 mm steel pipe through a 150 mm
concrete slab does not cover a 100 mm PVC pipe through the same slab. PVC melts and needs an intumescent collar or wrap that closes the opening as the pipe disappears. Steel does not melt but conducts heat, so it needs different treatment on the cold side. Same hole, same wall, completely different system.

One sealant used everywhere is the classic failure. It looks complete when the ceiling closes. It cannot be certified.

Understanding Ratings: F, T, L and W

Four letters appear on firestop listings. Most specifications call for the first two. Knowing all four prevents an avoidable rejection.

F-rating (Flame) How long, in hours, the system stops flame passing through the opening and resists the hose stream test. This is the baseline. An F-rating must at minimum match the rating of the barrier it sits in. A 2-hour wall needs a 2-hour F-rating.

T-rating (Temperature) How long the system keeps the temperature on the unexposed side from rising more than 181°C above ambient. A T-rating is usually required where combustible material could sit against the far side of the wall, or where the penetration is near floor level in an escape route. A steel pipe conducts heat efficiently, so it often needs additional treatment to achieve a T-rating even when the F-rating is easily met.

Many submittals answer only the F-rating and get returned. Check your specification before you order material.

L-rating (Leakage) Air leakage through the system, measured in cubic feet per minute. Specified where smoke control matters — smoke-rated barriers, pressurised stairwells, smoke lobbies. Smoke kills far more people than flame, so this rating is becoming more common on high-occupancy projects.

W-rating (Water) Resistance to water passage. Specified in wet areas, plant rooms and car parks where a seal may be exposed to standing water or wash-down.

A useful rule: read the fire strategy report and the specification together. The strategy tells you which barriers exist and why. The specification tells you what performance each one must deliver.

Choosing the Right System for Each Condition

On a mid-size project there might be forty or fifty distinct penetration conditions. Each needs a matched system. This is the work that separates a genuine firestopping company from a subcontractor with a caulking gun.

Metallic pipes — steel, copper, cast iron. These conduct heat but hold their shape. Usually sealed with a firestop sealant over mineral wool packing. If a T-rating is required, insulation may be needed on the unexposed side.

Plastic pipes — PVC, uPVC, HDPE, PPR. These soften and disappear early in a fire, leaving an open hole. They need an intumescent collar or wrap that expands and crushes the opening closed. Wall collars are surface-mounted; floor collars may be cast in. Pipe diameter and wall thickness both matter to the listing.

Insulated pipes — chilled water and HVAC lines. The insulation itself is a route for fire. The listing will state whether insulation may run continuously through the seal or must be interrupted, and which insulation types are covered.

Single cables and cable bundles — the listing sets a maximum percentage fill of the opening. An electrician who adds three more cables to a “finished” seal has invalidated it.

Cable trays and ladders — larger openings, usually treated with firestop mortar, board with sealant, or intumescent pillows where future access is needed. Pillows are convenient but must be reinstated correctly every single time they are removed.

Busbars — high heat conduction and significant movement under load. Specific listings apply. Do not improvise.

Ducts — either a fire damper at the barrier with the surrounding gap sealed, or a rated duct wrap system. These are different approaches and the drawings must show which is used where.

Blank and future openings — sleeves left for later use still need sealing to the full rating. They are forgotten more often than any other item.

Linear joints — head-of-wall joints and the curtain wall perimeter gap at the slab edge. These move with the building, so the system must be tested for the required movement cycle, not just the fire rating. The curtain wall perimeter is the most commonly missed item on tower projects in the region.

Practical note for Saudi sites: high ambient temperatures affect the cure and workability of sealants and mortars. Check the manufacturer’s temperature limits, store material out of direct sun, and plan the work for cooler parts of the day where the programme allows.

Proving Compliance: The Evidence That Passes Inspection

Correct installation is only half of it. In Saudi Arabia, fire safety approval runs through the General Directorate of Civil Defense and its Salamah digital platform, and SBC 801 sets the technical requirements. Both are document-driven.

Your compliance is a record, not an opinion. An inspector asks four questions about any seal: what was installed, where, by whom, and to which listing. If your file cannot answer all four, the installation cannot be certified — even if it is perfect.

A firestop package that passes review contains:

1. A penetration survey and schedule. Every penetration on the project, listed with its location, drawing reference, barrier type and rating, penetrating item, and the specific tested system reference assigned to it. This document is the backbone of the whole package.

2. Approved shop drawings. Rated barriers marked up with penetration positions and system references.

3. Product data and listings. Current third-party listing documents, technical data sheets, and SASO conformity documentation where applicable.

4. Method statements and risk assessments for each installation type.

5. Installer competence records. Manufacturer training certificates for the individual operatives on site, not just a company-level certificate.

6. Inspection records. Signed, dated and photographed, referenced to the schedule. Photographs must be taken before the seal is covered — an inspector cannot verify a seal behind a closed ceiling, and neither can you.

7. Labels on every completed seal. Contractor name, system reference, installation date, installer. This is what makes the installation traceable years later, and it is a standard requirement.

8. As-built drawings showing the final positions, including anything added late.

9. A permit-to-penetrate procedure. This is the one that saves projects. From first fix onwards, nobody drills a rated barrier without raising a permit. The seal is then reinstated and logged. Without it, the IT contractor pulls one more cable through a signed-off seal in week 40 and your entire record becomes unreliable.

10. A maintenance and re-inspection regime in the O&M manual, so the building stays compliant after handover.

Build this weekly as the work proceeds and it is routine. Reconstruct it from memory in the final fortnight and it will not hold. That single choice is the main difference between a project that opens on schedule and one that does not.

Key Points to Remember

• A firestop system is rated, not a product. The installation must match a tested listing exactly.
• The barrier type, penetrating item, diameter, annular space, material depth and backing are all binding variables.
• Steel pipe and PVC pipe through the same hole need completely different systems.
• Know your ratings: F for flame, T for temperature, L for smoke leakage, W for water.
• An F-rating must at least match the rating of the barrier it sits in.
• Check whether your specification requires a T-rating before ordering material.
• Cable seals have a maximum fill percentage. Adding cables later voids them.
• Blank sleeves and future openings still need full-rated sealing.
• Curtain wall perimeter joints and head-of-wall joints are the most commonly missed items.
• Label every seal and photograph it before it is covered.
• Operate a permit-to-penetrate system from first fix to handover.
• Firestopping is not finished at handover. Every later penetration must be reinstated.

Benefits of Contacting Us

Bringing a specialist in early changes the economics of the whole scope.

A penetration schedule built properly, once. Every condition on your project mapped to a specific tested listing, so submittals are approved rather than returned.

Problems found before an inspector finds them. A compliance gap review on a live project identifies wrong systems, missing seals and documentation gaps while correction is still cheap and access is still open.

Correct systems for difficult conditions. Busbars, large cable trays, insulated services, movement joints and curtain wall perimeters — the conditions where generic sealant details fail.

Documentation produced as the work proceeds. Photographs, inspection records, labels and as-builts generated weekly, so the handover pack already exists when it is needed.

Trained installers with certificates on file. A contractual requirement on most serious projects, and a common gap on others.

Fewer interfaces on site. Firestopping, structural fireproofing, rated boarding and testing handled by one accountable party rather than split across trades who each assume someone else covered the gap.

Programme protection. The real cost of poor firestopping is rarely the material. It is the weeks lost between practical completion and occupancy.

Support after handover. Re-inspection and reinstatement of seals broken by later fit-out, cabling and maintenance work.

Why Choose Manycon Saudi

Manycon Saudi delivers specialist passive fire protection across the Kingdom from our base in Riyadh, and firestopping is core work for us rather than an add-on scope.

Systems-first approach. We start with the penetration survey and the listing schedule, because that determines whether anything installed afterwards can actually be certified.

A complete related scope. Alongside firestopping we provide structural fireproofing, testing and certification, marking and coatings, epoxy flooring, GRP lining, waterproofing and roofing, and construction solutions including coring, scanning, cutting and demolition — which reduces coordination risk on your site.

Regional coverage. Riyadh, the Eastern Province and project sites across Saudi Arabia, supported by our group’s operations in Qatar and a wider GCC presence.

Records treated as part of the work, not paperwork after it. Labelling, photographs and as-builts are produced as we install.

Direct communication. Site surveys arranged quickly, technical queries answered by people who do this work every day.

Conclusion

Firestopping looks like the simplest trade on a construction site. A gap, some material, done. In reality it is one of the most technically specific scopes in the building, because performance depends entirely on matching a laboratory-tested arrangement and being able to prove it afterwards.

The method is not complicated. Survey every penetration. Assign each one a tested system that genuinely covers that condition. Install exactly as the listing describes. Photograph it, label it, record it. Control every new penetration with a permit. Keep the record alive after handover.

Projects that pass inspection first time are not the ones that installed fastest. They are the ones that treated firestopping as a documented engineering scope from the first week, rather than a snagging item in the last.

If you have a live project in the Kingdom and want to know where your gaps are before Civil Defense does, talk to us.

Manycon Saudi 3478 Al Yaqout Road, Ad Dar Al Baida, Riyadh 1457, Kingdom of Saudi Arabia Phone: +966 56 562 7900 Email: admin@manyconsaudi.com

Frequently Asked Questions

1. What is firestopping? Firestopping is the sealing of openings and joints in fire-rated walls and floors — where cables, pipes, ducts and trays pass through — so that the fire resistance of the barrier is restored and fire and smoke cannot spread between compartments.

2. Why is fire-rated sealant alone not enough? Because the rating belongs to a tested system, not to the product. The listing specifies the barrier, the penetrating item, the gap size, the material depth and the backing. If the installation does not match a tested arrangement, there is no rating to claim.

3. What is the difference between an F-rating and a T-rating? The F-rating is how long the system resists the passage of flame. The T-rating additionally limits the temperature rise on the unexposed side. A T-rating is usually specified where combustible material may sit against the far face of the barrier.

4. What are L-ratings and W-ratings? The L-rating measures air and smoke leakage through the system and is specified where smoke control matters, such as pressurised stairwells. The W-rating measures resistance to water passage and is used in wet areas and car parks.

5. Can the same system be used for a steel pipe and a PVC pipe? No. Steel holds its shape and conducts heat. PVC softens and disappears, leaving an open hole, so it needs an intumescent collar or wrap that closes the opening. They require different listed systems even in the same wall.