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Fire protection · Boards
Fire protection boards – dry, robust encasement for steel
Calcium silicate, vermiculite and fire-rated gypsum boards box in steel columns and beams and line fire-rated walls, shafts and ducts. They are installed dry, give a clean finish ready for paint and reach the longest ratings – up to four hours.
- Up to 240 min
- Typical encasement rating R240 / FRL 240 / 4 h
- A1
- Reaction to fire typical for silicate boards
- Dry
- Installation no curing, no overspray
- Visible
- Thickness check easy inspection
How board encasement works
Boards are cut to size and fixed around the steel as a box – on noggins, steel angles or directly to each other – so the heated perimeter is the box, not the profile. Board type and thickness are chosen from the member's section factor and the required rating using the manufacturer's tested data (EN 13381-4, UL listings or AS 1530.4).
The same board families build fire-rated walls, ceilings, shafts and ducts. In those uses the rating belongs to the complete tested system – boards, studs, insulation, fixings and joints.
Linha de produtos
Fire board types
Product-type pages with typical data – brand and listed system per specification.
Boards for encasing structural steel
Calcium silicate and vermiculite boards that box in columns and beams with a dry, robust finish.
Board encasementCalcium silicate fire protection boardA dense, non-combustible board screwed or stapled around steel members, with a smooth surface for paint – dry, robust and easy to inspect.A1 (typical)Reaction to fireup to R240Typical ratingVer produto →Board encasementVermiculite fire protection boardA light exfoliated-vermiculite board – easy to cut and fix on site for steel encasement and fire-rated ductwork.A1 (typical)Reaction to fireup to R240Typical ratingVer produto →Boards · cement-basedCement-based fire protection boardsA dense, moisture-tolerant board for fire protection that must also take knocks and humidity.CementBinderHumid, semi-exposed, impactExposureVer produto →Boards · encasement systemsSteel encasement systemsBox encasement turns a steel member into a clean, square, fire-protected element – the details are as important as the board.Board + fixings + jointsSystemColumns, beams, bracingMembersVer produto →Fire-rated lining boards and slabs
Type X / F gypsum boards and stone wool slabs for fire-rated walls, ceilings, shafts and ducts.
Fire-rated liningFire-rated gypsum board (Type X / F)Glass-fibre-reinforced gypsum boards that keep their integrity in fire – the most economical fire-rated lining for walls, ceilings and steel encasement.ASTM C1396 Type X · EN 520 FStandard30 – 120 min in systemsTypical ratingVer produto →
Fire-rated insulationStone wool fire slabDense, non-combustible stone wool slabs used in fire walls, cavity barriers, duct and steel protection systems.A1Reaction to fire> 1,000 °CMelting pointVer produto →Normas e conformidade
Standards for fire boards
Most often specified in our export markets.
Europe
- EN 13381-4Passive protection applied to steel members
- EN 520 · EN 14306Gypsum boards (type F); calcium silicate products
- EN 13501-1 · -2Reaction to fire; fire resistance classification
United States
- ASTM E119 · UL 263Fire resistance of assemblies (UL designs)
- ASTM C1396 Type XFire-rated gypsum board
- ASTM E136Non-combustibility
Australia & New Zealand
- AS 1530.4 · AS 1530.1Fire resistance; combustibility
- AS/NZS 2588Gypsum plasterboard
Resumo apenas para orientação – prevalecem a especificação do projeto, a edição da norma adotada e a autoridade competente.
Supplied with the steel
Boards sized from the member schedule
World Steel takes the fire engineer's member schedule, works out board types and quantities for each column and beam, and ships the boards with the structure. Read the overview of fire protection for steel, compare intumescent coatings, or see gypsum board and fibre cement board.
FAQ
Perguntas frequentes
Calcium silicate or gypsum board?
Calcium silicate boards are denser and more robust and reach longer ratings on steel; fire-rated gypsum (Type X / F) is the economical choice for walls, ceilings and many encasement systems.
Can fire boards be used outdoors?
Some calcium silicate boards are suitable for humid or semi-exposed areas – check the product data; gypsum boards are for dry interiors only.
How is a board system inspected?
Board type and thickness are visible, so the inspector checks them against the schedule, together with fixings and joints.
Need fire boards with your steel structure?
Send the member schedule and ratings – we quote boards and steel together.