Welding Blankets, Curtains & Screens Guide: AS 1674.1 Hot Work Compliance

Welding blankets, welding curtains and welding screens are the three fire-protection products that turn a hot-work job from a workshop accident waiting to happen into a compliant, contained operation. AS 1674.1:1997 — the Australian standard for safety in welding and allied processes — makes screening of the work area a duty, not an option. This guide cuts through the confusion: what each product does, AS 1674.1 hot work permits and fire watch protocol, leather vs fibreglass temperature ratings, the meaning of curtain colours, sizing, mobile frames, and the Bossweld range we stock at AIMS. Scope: industrial welding fire protection. Not for kitchen fire blankets (different product, AS 3504), arc-flash electrical curtains (PPE category 4 electrical work), or X-ray lead screens (radiology).

Why fire protection matters — the hot work reality

Welding generates spatter at 1,100–6,000°C, sparks travelling up to 10 metres, and radiant UV/IR that ignites flammables across a workshop. The AS 1674.1 hot work framework exists because welding fires are the most common cause of industrial fire incidents in Australia — typically from sparks landing on materials the welder didn't account for, or from radiant heat slowly raising the temperature of nearby combustibles past their ignition point.

Welding blankets, curtains and screens solve three distinct problems: protecting equipment and surfaces below and around the weld (blanket); blocking UV and arc-flash exposure to bystanders or adjacent workspaces (curtain/screen); and creating a compliant hot work zone that satisfies AS 1674.1 and workplace duty of care.

This guide assumes you already have the welder PPE covered. If not, see our companion guides on welding gloves, welding helmets, welding eye protection, the respirator guide for fume control, and safety boots. Fire protection complements personal PPE — it doesn't replace it.

The three product categories: blanket vs curtain vs screen

The three products solve different problems. Confusing them — using a blanket as a curtain, or buying a screen when you need a blanket — is the most common mistake. Pick the right product first, worry about specs second.

Common dual-use: a leather welding blanket with eyelets at the corners can be hung as a vertical barrier curtain when needed — the Bossweld 1.8m × 1.8m Leather Blanket with Eyelets is designed exactly for this. But a purpose-built welding curtain is lighter, transparent (in PVC), and easier to deploy and store. Don't confuse "I have a blanket so I don't need a curtain" — they protect against different hazards.

AIMS stocks 8 products in /collections/welding-blankets-curtains: four sizes of Bossweld leather blankets (1.0m × 2.0m through 3.0m × 3.0m), a clearance leather blanket, plus Bossweld PVC curtain options (1.74m × 1.74m fixed-size and a multi-size range up to 3.4m), and the Dynaweld Bossweld mobile click-together curtain frame. Single-brand simplicity — Bossweld dominates the range.

AS 1674.1 — the Australian hot work standard decoded

AS 1674.1:1997 — Safety in welding and allied processes, Part 1: Fire precautions — is the foundational standard for hot work fire safety in Australia. Every state's WHS authority (WorkSafe Victoria, WorkSafe WA, WorkSafe QLD, NSW Resources, Safe Work Australia) references it as the compliance basis. If a hot work fire incident is investigated, the question is always: were AS 1674.1 procedures followed?

The standard requires four things in combination:

1. Hot work permit — a documented authorisation that work is permitted in a defined area for a defined time, with named responsible persons and listed precautions
2. 10-metre exclusion zone — combustible materials must be removed or shielded within 10m of the welding location (vertically and horizontally)
3. Screening — fixed or mobile screens, curtains or blankets to contain sparks, spatter and radiant heat within the work area, AND to protect bystanders from arc-flash exposure
4. Fire watch — a designated person who monitors during work and for a defined period afterwards (typically 30 minutes minimum, longer in high-risk environments) to detect smouldering ignition before it becomes a fire

The hot work permit isn't an optional formality — it's the document that proves the four-pillar framework was applied. AS 1674.1 is referenced in Safe Work Australia's Welding processes guidance and in every major industrial site's hot work procedure. Workplaces that fail an audit on hot work are almost always missing the fire watch protocol or the screening duty.

AS 1441.13 and AS/NZS 4502 — fire-retardant testing standards

While AS 1674.1 defines the procedure, two other Australian standards define the materials that meet it:

• AS 1441.13 — Fire-retardant test method for fabrics. This is the standard referenced on Bossweld welding curtains as the basis for fire-retardant compliance. A curtain that passes AS 1441.13 will self-extinguish when the ignition source is removed — it won't propagate flame.
• AS/NZS 4502 series — Methods for evaluating clothing for protection. Adjacent to welding curtains, this series tests welder clothing fabrics (jackets, aprons, leathers) for heat and flame resistance.
• AS 1674.2 — Part 2: Electrical safety in welding (the electrical-hazard companion to AS 1674.1).
• AS 1940 — Storage and handling of flammable and combustible liquids. Critical when hot work is performed near fuel/solvent storage.

For European-sourced welding curtains and blankets, look for EN ISO 11611 (welder protective clothing — adjacent) and EN 1598 (welding curtains, transparent or opaque). EN 1598 is the European peer of AS 1441.13 — most international welding curtains are EN 1598 compliant rather than AS 1441.13, but the performance is broadly equivalent.

Buyer takeaway: any welding curtain or blanket you specify for AS 1674.1 compliance should reference AS 1441.13 (Australian), EN 1598 (European) or an equivalent. Generic "fire-retardant" claims without a standard reference are not enough for audit purposes. The Bossweld curtains at AIMS reference AS 1441.13 explicitly.

Welding blanket materials — leather vs fibreglass vs silica vs carbon felt

Welding blanket material determines both the temperature rating and the application fit. Four materials dominate, with distinct continuous-temperature ratings and use cases.

Honest scope: AIMS stocks chrome leather welding blankets only at retail. Chrome leather is the workshop standard for typical MIG/stick/plasma spatter protection — it handles 500°C continuous, doesn't melt under spark contact, and is sized to drape over equipment or hang as a vertical barrier. For sustained heat-treatment work, foundry exposure, or 800°C+ applications, fibreglass or silica is needed. Call AIMS on (02) 9773 0122 — we can source through supplier network if you need a fibreglass roll or specialist silica blanket.

Why chrome leather dominates the workshop: it doesn't melt, it folds and stores without cracking, it drapes over equipment to take spark hits, and it can be hung as a curtain when needed (with eyelets). Fibreglass is technically higher-rated but it sheds fibres with handling and is harder to fold and store. For typical workshop welding under 200A — which covers most MIG, all TIG and most stick — chrome leather is the correct choice.

Welding blanket sizes — what to cover and how to size correctly

Blanket size should overlap the spark fall zone by at least 50% on each side. Sparks travel up to 10 metres horizontally during stick welding; spatter from MIG/flux-cored welding bounces 1–3 metres routinely; oxy-acetylene cutting throws molten slag up to 5m. The blanket needs to be big enough to catch ALL of this, not just the obvious zone.

Sizing rules of thumb:

• Bench MIG/TIG: 1.0m × 2.0m or 2.0m × 2.0m is sufficient for the direct spatter zone
• Stick welding: 2.0m × 2.0m minimum to catch the wider spark spread
• Field welding outside a workshop: 3.0m × 3.0m gives enough margin for wind drift and unpredictable spark trajectories
• Protecting machinery (lathes, mills, hydraulic equipment) during nearby welding: blanket needs to cover the entire piece plus 200mm overhang on every side
• Floor protection from molten slag (cutting, gouging): blanket must extend at least 1m beyond the work zone in the direction sparks travel

Eyelet vs no-eyelet blankets — when to choose which

The eyelet question matters more than it seems. A blanket with eyelets at the corners can do double duty — drape horizontally over equipment, OR hang vertically as a curtain on a hook, stand or frame. A blanket without eyelets is purely for draping or placing — you can't reliably hang it without damaging the fabric.

• Eyelet blankets (Bossweld 1.8m × 1.8m with Eyelets): best when you need flexibility. Hang as a curtain between work zones, drape over a tool box, lay across a workbench. The eyelets are reinforced at the corners and along edges so the blanket can take vertical loading without tearing.
• No-eyelet blankets (Bossweld 1.0m × 2.0m, 2.0m × 2.0m, 3.0m × 3.0m, clearance 2m × 2m): best for fixed protection. Drape over equipment, lay on a surface, or fold and store. Cheaper than eyelet versions for the same size.

Workshop tip: if you weld in different locations or rearrange workspaces, the dual-use eyelet blanket pays for itself. If your welding bay is fixed and the blanket lives in one place, no-eyelet is more economical.

Welding curtains — PVC vs leather, transparency vs full barrier

Welding curtains are the vertical-barrier equivalent of blankets. Two construction types dominate: flame-retardant PVC (lighter, often transparent or translucent) and leather (heavier, opaque, more rugged). Both can be AS 1441.13 or EN 1598 compliant when correctly specified.

PVC welding curtains dominate the AU workshop market. The Bossweld Welding Curtain 1.74m × 1.74m and the Bossweld multi-size Welding Curtain range (1.3m through 3.4m) at AIMS are both flame-retardant PVC with UV/IR shielding, AS 1441.13 compliant. PVC advantages:

• Translucent — preserves visibility into and out of the work zone for situational awareness and supervision
• Lighter weight — easier to hang, move, and store
• UV/IR blocking — protects bystanders from arc flash without making the area completely dark
• Available in colours (green, red, orange) for different protection levels
• Lower cost than leather curtains
• Easy to wipe clean of spatter

Leather welding curtains (functionally an eyelet blanket hung vertically) are the choice when full opacity is needed, or when the curtain doubles as a spatter blanket. The Bossweld 1.8m × 1.8m Leather Blanket with Eyelets serves this role in the AIMS range. Leather advantages:

• Full opacity — no visual through curtain (privacy, no distraction)
• Maximum spatter resistance — leather catches direct spark contact better than PVC
• Dual-use — can be deployed as horizontal blanket when not hanging
• Longer service life under heavy spatter

Trade-off summary: PVC if you need visibility, light weight and colour selection. Leather if you need opacity and dual-use flexibility. Most AU workshops run PVC curtains for routine bystander protection plus leather blankets as targeted spatter barriers — different products for different jobs.

Curtain colours decoded — green, red, orange and the rest

Welding curtain colours aren't decorative. Different colours provide different levels of UV and infrared protection, with trade-offs against visibility. The colour code is broadly consistent internationally, with subtle variations between manufacturers.

AIMS curtain colours stocked: Green, Red, Orange — covering the three highest-volume colour requests. Green is the default workshop choice; red and orange add cautionary signalling. Bossweld curtains at AIMS are AS 1441.13 compliant regardless of colour — the colour affects optical performance, not fire-retardant rating.

Why welding curtains are typically red or orange: the recurring forum question. Two reasons. First, red and orange are light-reflective — they bounce back some of the arc's visible spectrum, slightly reducing the curtain's heat absorption. Second, the colours are cautionary by convention — anyone seeing a red or orange curtain reads "hot work in progress, don't enter." Green is functionally just as protective (often better) but lacks the same visual warning.

Welding screens — mobile frames and portable barriers

Welding screens are mobile, free-standing units — typically a metal frame with welding curtain panels mounted to it. The screen wheels into position, deploys quickly, and rolls away after the job. Best for workshops where the welding location changes day-to-day, or where bystander protection needs to be quickly configured for visiting contractors.

The Dynaweld Bossweld Mobile Welding Curtain Frame 1.74m × 1.74m at AIMS is the supply option — a click-together frame with four swivel wheels (two lockable) for stable positioning. The frame is sized to match the Bossweld Welding Curtain 1.74m × 1.74m — buy them together for a complete portable workstation enclosure.

Mobile vs fixed screens — the workshop decision:

• Mobile screens suit job-shop and field welding where work location varies. Configure on demand; roll away when not in use. Higher upfront cost but greater flexibility.
• Fixed screens suit production welding bays where the work is constant. Permanent installation of a curtain on a wall-mounted rail. Lower running cost but inflexible.

The Bossweld mobile frame is the AIMS-stocked option. For fixed installation, the Bossweld multi-size Welding Curtain range (up to 3.4m wide) can be hung from a fixed rail system — call us on (02) 9773 0122 for fixed-installation rail options.

Fire watch — the AS 1674.1 protocol

Fire watch is the post-welding observation period required by AS 1674.1. It's the single most-skipped element of hot work compliance — and the cause of most welding fire incidents that are investigated. Here's what AS 1674.1 actually requires.

Who can serve as fire watch: any competent person trained on fire risk identification, smoulder detection, fire extinguisher use, and the alarm escalation procedure. Often the welder doubles as fire watch when working solo, but a separate fire watch is mandatory for confined space, elevated work, or work near combustibles.

During welding: fire watch monitors the work area for sparks landing on combustibles, smoulder, smoke or unusual heating. Stays within sight of the work, with a fire extinguisher within arm's reach (Class A/B/C minimum for typical welding; CO2 or dry powder).

After welding stops:

• Minimum 30 minutes continued observation in standard environments (AS 1674.1 baseline)
• 60 minutes in elevated-risk environments — confined space, near combustibles, in voids and concealed spaces, or where workpiece has significant retained heat
• Longer (up to several hours) in high-risk environments — petroleum, chemical, explosive atmospheres, or where AS 1674.1 has been applied via a site-specific hot work permit

Common forum-reported failures: welders leaving the site immediately after stopping the arc; "fire watch" being someone who walks away to do another task; absence of a fire extinguisher within reach; not monitoring concealed spaces (wall cavities, voids) that the spark travelled into. Each of these is a documented cause of post-welding fire incidents in Australia.

Hot work permit — what triggers it and how to complete it

A hot work permit is the documented authorisation that welding (or grinding, cutting, brazing, soldering — all "hot work") is permitted in a defined area for a defined time. AS 1674.1 doesn't mandate a permit format, but every workplace conducting hot work in non-designated welding areas should have one.

When a hot work permit is required:

• Welding in any area not specifically designed and equipped as a welding bay
• Field welding outside the workshop (construction sites, plant rooms, customer sites)
• Welding near combustibles (within 10m horizontally or vertically)
• Welding in confined spaces, elevated work, or above ground level
• Welding near flammable/explosive atmospheres (petroleum, chemical, dust hazards)
• Any hot work at a site governed by a contractor management framework (mining, petroleum, ports, utilities, government infrastructure)

What the permit specifies:

• Date, time and location of the work
• Welder name and qualification
• Fire watch name
• Combustibles cleared or shielded within 10m
• Fire extinguisher type and location
• Welding blankets/curtains/screens deployed
• Authorised approver signature
• Sign-off after fire watch completion

Permit templates are available from each state's WHS authority. Most contractor management systems require a hot work permit before any spark-producing tool is energised on site.

AIMS welding blanket, curtain and screen range

The complete AIMS range at /collections/welding-blankets-curtains:

Leather welding blankets (heavy chrome leather, sized for typical workshop protection):

• Bossweld 1.0m × 2.0m Leather Welding Blanket — $54.83. Single-bench spatter zone.
• Bossweld 2.0m × 2.0m Leather Welding Blanket — $91.52. Standard workshop blanket.
• Bossweld 1.8m × 1.8m Leather Blanket with Eyelets — $76.57. Dual-use blanket/curtain with corner eyelets for vertical hanging.
• Bossweld 3.0m × 3.0m Leather Welding Blanket — $181.55. Heavy spatter zones, field welding, large machinery protection.
• Leather Welding Blanket No Eyelets 2m × 2m (clearance) — $104.28. Limited stock.

Welding curtains (flame-retardant PVC, AS 1441.13 compliant):

• Bossweld Welding Curtain 1.74m × 1.74m (Green or Red) — $53.27. UV/IR shielding, transparent.
• Bossweld Welding Curtain — multi-size range — $55.75 to $147.62. Transparent flame-retardant PVC, available in 1.3m / 2m / 2.7m / 3.4m widths, Green or Orange. AS 1441.13 compliant.

Mobile curtain frames:

• Dynaweld Bossweld Mobile Welding Curtain Frame 1.74m × 1.74m — $120.20. Click-together frame, four swivel wheels (two lockable). Buy with the matching 1.74m × 1.74m curtain for a complete portable enclosure.

What AIMS doesn't stock at retail: fibreglass blankets (HT800, treated, caramelised), silica fabric, carbon felt, lead screens (X-ray work), arc-flash electrical curtains. For these, call (02) 9773 0122 — we can source through supplier network for specific applications.

The full Welding Safety Equipment range (122 products) covers helmets, jackets, gloves, glasses, fume extraction and accessories alongside the blanket and curtain range.

Care, maintenance and when to discard

Welding blankets and curtains are consumable safety equipment. Average service life depends entirely on use intensity — a daily-use stick-welding spatter blanket may last 6–12 months; a curtain used for occasional bystander protection lasts years.

Care during use:

• Brush off slag and spatter with a stiff brush after each job. Don't let molten metal sit on the surface — it will continue to burn into the leather/PVC.
• Don't wash leather blankets with water — wet/dry cycling hardens chrome leather. Wipe with a damp cloth, never submerge.
• Store folded loosely or rolled, in a dry area away from direct sunlight (UV degrades leather and PVC faster than welding exposure does).
• Don't store damp — mould and mildew destroy leather and degrade PVC fire-retardant treatment.
• PVC curtains can be wiped with a damp cloth and mild detergent if needed.

Discard signs:

• Burn-through holes anywhere on the blanket or curtain
• Hardened, cracked or curling leather — fire-retardant performance is compromised even if the blanket looks intact
• PVC curtain showing brittleness, yellowing or cracking — UV degradation may have damaged the flame-retardant treatment
• Eyelet pull-out, seam separation or fraying edges — structural failure under hanging load
• Heavy slag fusion that can't be brushed off — embedded metal disrupts protection

Don't try to extend a damaged welding blanket or curtain "until the next replacement order." A welding fire costs more than the blanket.

Common mistakes — 8 forum-validated errors

Frequently Asked Questions

What is the difference between a welding blanket and a fire blanket?

A welding blanket is a larger industrial protective fabric (typically 1m–3m+) designed to protect equipment and surfaces from welding spatter, slag and radiant heat during ongoing hot work. A kitchen fire blanket (AS 3504) is a smaller emergency-deployment fabric (typically 1m × 1m or 1.2m × 1.8m) designed to smother a localised flame after ignition. Different products, different standards, different deployment patterns. AIMS stocks welding blankets only — kitchen fire blankets are sold through different safety-supply channels.

What is the Australian standard for welding fire protection?

AS 1674.1:1997 — Safety in welding and allied processes, Part 1: Fire precautions — is the primary Australian standard. It defines hot work permit requirements, the 10-metre combustibles exclusion zone, screening duty (blankets/curtains/screens), and fire watch protocol. AS 1674.2 covers electrical safety in welding. AS 1441.13 is the fire-retardant test method for welding-curtain fabrics. Safe Work Australia's Welding processes guidance and every state WHS authority reference AS 1674.1 as the compliance basis.

What is hot work and what does AS 1674.1 require?

Hot work is any work that produces sparks, flames or heat capable of igniting combustibles — welding, oxy/gas cutting, grinding, brazing, soldering, thermal lancing. AS 1674.1 requires four things in combination: (1) a hot work permit documenting authorisation, (2) a 10-metre combustibles exclusion zone (clear or shielded), (3) screening of the work area to contain sparks and protect bystanders, and (4) fire watch for the duration of work plus a minimum 30 minutes after the work stops. All four are mandatory for AU compliance; missing any one is the most common audit failure.

How long does a fire watch need to be after welding?

Minimum 30 minutes in standard environments per AS 1674.1. Extend to 60 minutes in elevated-risk areas — confined space, near combustibles, in voids and concealed spaces, or where the workpiece has significant retained heat. Longer (up to several hours) in high-risk environments — petroleum, chemical, explosive atmospheres, or sites governed by site-specific permits. The fire watch needs a fire extinguisher in arm's reach and must stay within sight of the work zone. Most welding fires start 10–30 minutes after the arc stops, from smoulder in concealed spaces.

What is the best material for a welding blanket?

Chrome leather for typical workshop welding under 200A — handles 500°C continuous, doesn't melt, drapes well, easy to store. Fibreglass (caramelised or treated HT800) for heavier industrial work or heat treatment retention — handles 600–800°C continuous. Silica or carbon felt for sustained high-heat work — handles 1,000°C+. The material decision is application-driven, not best-overall. AIMS stocks chrome leather (Bossweld range); fibreglass and silica we source on request.

What temperature can leather welding blankets withstand?

Chrome leather welding blankets are rated for approximately 500°C continuous and short bursts up to ~600°C. This is sufficient for typical MIG, TIG, light stick and plasma cutting spatter — these processes generate localised 1,500°C+ spatter, but the actual contact time on the blanket is brief (sparks bounce off rather than sit). For sustained contact heat above 500°C (heat treatment retention, foundry exposure, furnace work), use fibreglass or silica rather than leather.

What temperature can fibreglass welding blankets withstand?

Standard caramelised fibreglass: ~600°C continuous, ~800°C short burst. Treated fibreglass (HT800 grade): ~800°C continuous, ~1,000°C short burst. Vermiculite-coated fibreglass: higher again. AIMS doesn't stock fibreglass at retail — for fibreglass requirements, call us on (02) 9773 0122 and we can source through supplier network. Fibreglass is the choice when sustained heat exposure is the problem (heat treatment, foundry adjacent, large-format welding enclosures).

What's the difference between a welding blanket and a welding curtain?

Welding blanket: catches spatter and sparks, protects surfaces and equipment, used horizontally as a drape or vertically with eyelets. Welding curtain: blocks UV and IR radiation, protects bystanders from arc flash, defines a work zone, used vertically on a frame or hooks. Different jobs. Many workshops use both — blanket for direct spatter protection plus curtain for bystander UV protection. The Bossweld eyelet blanket at AIMS can do both jobs but a purpose-built PVC curtain is lighter and easier to deploy.

What colour welding curtain should I choose?

Green for general workshop welding (TIG, MIG, light stick) — the default choice with good UV/IR blocking and good visibility. Red or orange for medium-amperage work and cautionary signalling — these light-reflective colours warn bystanders of hot work in progress. Yellow for higher visibility lower-protection applications. Blue or grey/black for heavy stick/plasma where maximum UV blocking is more important than visibility through the curtain. AIMS stocks Bossweld curtains in Green, Red and Orange — the three highest-volume colour choices in AU workshops.

Why are welding curtains red?

Two reasons: optical and conventional. Optically, red is light-reflective — the colour bounces back some of the arc's visible spectrum, reducing the curtain's heat absorption. Conventionally, red and orange are the universally recognised "hot work in progress" warning colours — anyone seeing them reads "don't enter this zone, welding underway." Green is functionally just as protective (often better at UV blocking) but doesn't carry the same visual warning. Many AU workshops run red or orange curtains specifically for the cautionary signal.

Can I use a tarp as a welding curtain?

No. Synthetic tarps (polyethylene, polypropylene, PVC tarpaulin) melt under spark contact and add fire load — they accelerate ignition rather than prevent it. Wool blankets also melt despite the persistent myth that wool resists fire. The only acceptable welding curtain substitutes are purpose-built fabrics rated to AS 1441.13 (Australian), EN 1598 (European) or equivalent. Generic tarps are not acceptable for AS 1674.1 compliance regardless of cost.

Do welding curtains need to be AS approved?

For AS 1674.1 compliance in Australian workplaces, curtains and screening fabrics must be flame-retardant tested to a recognised standard — AS 1441.13 (Australian fire-retardant test method) is the relevant reference. EN 1598 (European peer standard) is broadly equivalent and accepted for imported curtains. Generic "fire-retardant" claims without a standard reference are not enough for audit purposes. Bossweld welding curtains at AIMS reference AS 1441.13 explicitly on product labelling.

What size welding blanket do I need?

For bench MIG/TIG: 1.0m × 2.0m or 2.0m × 2.0m covers the direct spatter zone. For stick welding (wider spark spread): 2.0m × 2.0m minimum. For field welding outside a workshop: 3.0m × 3.0m gives margin for wind drift. For protecting machinery (lathes, mills, hydraulic equipment): cover the entire piece plus 200mm overhang every side. The general rule: blanket should overlap the spark fall zone by at least 50% on each side. Stick welding sparks can travel 10m horizontally — size accordingly.

How do I clean and care for a welding blanket?

Brush off slag and spatter with a stiff brush after each use. Don't let molten metal sit on the surface — it continues to burn into the leather or PVC. Don't wash leather blankets with water — wet/dry cycling hardens chrome leather. Wipe with a damp cloth, never submerge. Store folded loosely or rolled, in a dry area away from direct sunlight (UV degrades both leather and PVC faster than welding exposure). PVC curtains can be wiped with a damp cloth and mild detergent. Don't store damp — mould and mildew destroy leather and degrade the PVC fire-retardant treatment.

What is AS 1441.13?

AS 1441.13 is the Australian standard fire-retardant test method for fabrics. A fabric that passes AS 1441.13 will self-extinguish when the ignition source is removed — it won't propagate flame across the fabric. Welding curtains and protective fabrics referenced as AS 1441.13 compliant have been tested to this standard. Bossweld welding curtains at AIMS reference AS 1441.13 directly on product labelling, making them compliant for AS 1674.1 hot work screening duties. The European peer standard is EN 1598.