12.5mm Fire Rated Square Edge Plasterboard900x1800mm is built for fire performance in compact spaces. Reinforced with vermiculite and glass fibre, this board holds integrity under heat and meets the needs of domestic fire protection.
Its smaller size is ideal for ceilings, corridors or tight working areas where manoeuvrability matters. With square edges and a thermal conductivity of 0.24 W/mK, it's suitable for direct decoration or plaster finishing. Dimensions: 900mm x 1800mm x 12.5mm.
Key Features
Made in the UK Square edge for direct finish Fire-rated to 30 minutes Lightweight for easy handling Thermal conductivity 0.24 W/mK
Knauf
Insulation
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Delivery is free to Mainland England and Wales. Deliveries are chargable to Scotland.
Once the order is placed, our courier will call you within 3 working days to arrange a delivery date. If you do not hear from the courier within 3 days, please get in touch with us. The majority of deliveries are made within 7 days, occasionally a little longer during peak periods.
Deliveries are made between 08:00 and 18:00 on the day, we request the driver calls you one hour before with an advised time.
Delivery is made via a kerbside tail lift lorry, we cannot deliver to sloping ground as the tail lift must be able to lay flat.
The road must be wide enough for a lorry to fit down and free from obstruction, if there are any access restrictions, please contact us.
Deliveries must be signed for, please report any damages to us within 24 hours.
We offer all bricks with a tail lift offloading service, Please familiarise yourself with the information below.
Crane offloading is available as a premium service for some bricks.
FAQ
All of our C16 and C24 graded timber is regularised
Regularised timber is timber that has been processed to have a uniform shape and size. This means that the wood has been sawn and planed to remove any irregularities and ensure that each piece of wood has consistent dimensions. Regularised timber is often used in construction, particularly in the framing of buildings, as it is easier to work with and can be more efficiently installed than irregularly shaped timber.
We have one of the largest ranges of timber lengths, dimensions and grades available to buy online.
The variation you require will determine the exact lead time and delivery method.
Most orders arrive within 3-4 days, the maximum is 7 days. Please get in touch before you order if you need a specifc delivery date.
Delivery charges vary by postcode. To find out the delivery charge, add the item(s) you require to your basket and select CALCULATE SHIPPING at the bottom of the page.
Some orders are delivered on our own vehicles based in Leicestershire and Cheshire. We also use carriers including Yodel and Tuffnells. For some sizes and locations we use regional distributors.
If you'd prefer crane offloading rather than tail lift vehicle offloading for your brick order then this service is available for the majority of bricks that we sell. Charges are shown at checkout.
For deliveries of less than 6 packs then Taillift offloading is normally a more cost effective option
Downloadable information can be found here:
Armstrong Cheshire supply the full range of Catnic Lintels. If you don't see the lintel you need on our website, choose from the Catnic Lintel Selector Brochure and give us a call 01625 322269
Downloadable information can be found here:
12.5mm Fire Rated Square Edge Plasterboard900x1800mm is built for fire performance in compact spaces. Reinforced with vermiculite and glass fibre, this board holds integrity under heat and meets the needs of domestic fire protection.
Its smaller size is ideal for ceilings, corridors or tight working areas where manoeuvrability matters. With square edges and a thermal conductivity of 0.24 W/mK, it's suitable for direct decoration or plaster finishing. Dimensions: 900mm x 1800mm x 12.5mm.
Key Features
Made in the UK Square edge for direct finish Fire-rated to 30 minutes Lightweight for easy handling Thermal conductivity 0.24 W/mK
Knauf
Insulation
{PRODUCT_DESCRIPTION}
Delivery is free to Mainland England and Wales. Deliveries are chargable to Scotland.
Once the order is placed, our courier will call you within 3 working days to arrange a delivery date. If you do not hear from the courier within 3 days, please get in touch with us. The majority of deliveries are made within 7 days, occasionally a little longer during peak periods.
Deliveries are made between 08:00 and 18:00 on the day, we request the driver calls you one hour before with an advised time.
Delivery is made via a kerbside tail lift lorry, we cannot deliver to sloping ground as the tail lift must be able to lay flat.
The road must be wide enough for a lorry to fit down and free from obstruction, if there are any access restrictions, please contact us.
Deliveries must be signed for, please report any damages to us within 24 hours.
We offer all bricks with a tail lift offloading service, Please familiarise yourself with the information below.
Crane offloading is available as a premium service for some bricks.
All of our C16 and C24 graded timber is regularised
Regularised timber is timber that has been processed to have a uniform shape and size. This means that the wood has been sawn and planed to remove any irregularities and ensure that each piece of wood has consistent dimensions. Regularised timber is often used in construction, particularly in the framing of buildings, as it is easier to work with and can be more efficiently installed than irregularly shaped timber.
We have one of the largest ranges of timber lengths, dimensions and grades available to buy online. The variation you require will determine the exact lead time and delivery method.
Most orders arrive within 3-4 days, the maximum is 7 days.
Please get in touch before you order if you need a specific delivery date.
Delivery charges vary by postcode. To find out the delivery charge, add the item(s) you require to your basket and select CALCULATE SHIPPING at the bottom of the page. Some orders are delivered on our vehicles based in Leicestershire and Cheshire. We also use carriers including Yodel and Tuffnells. For some sizes and locations, we use regional distributors.
If you'd prefer crane offloading rather than tail lift vehicle offloading for your brick order then this service is available for the majority of bricks that we sell. Charges are shown at checkout.
For deliveries of less than 6 packs then Taillift offloading is normally a more cost effective option
Downloadable information can be found here:
Armstrong Cheshire supply the full range of Catnic Lintels. If you don't see the lintel you need on our website, choose from the Catnic Lintel Selector Brochure and give us a call 01625 322269
12.5mm Knauf Fire Rated Plasterboard, square edge, 900x1800mm. Lightweight, compact fire board for ceilings and partitions. Suitable for direct finish.
Knauf Fire Rated Plasterboard 1800x900x12.5mm
is backordered and will ship as soon as it is back in stock.
Couldn't load collection availability
Delivery charges will vary depending on your location.
To find out delivery cost to your postcode, add the products your require to your basket and then review your basket, entering the delivery postcode
We look to dispatch all products same-day where possible, we use a close network of couriers we have worked alongside for a number of years and will share any and all shipping updates with you directly.
12.5mm Fire Rated Square Edge Plasterboard900x1800mm is built for fire performance in compact spaces. Reinforced with vermiculite and glass fibre, this board holds integrity under heat and meets the needs of domestic fire protection.
Its smaller size is ideal for ceilings, corridors or tight working areas where manoeuvrability matters. With square edges and a thermal conductivity of 0.24 W/mK, it's suitable for direct decoration or plaster finishing. Dimensions: 900mm x 1800mm x 12.5mm.
Key Features
Made in the UK Square edge for direct finish Fire-rated to 30 minutes Lightweight for easy handling Thermal conductivity 0.24 W/mK
12.5mm Fire Rated Square Edge Plasterboard900x1800mm is built for fire performance in compact spaces. Reinforced with vermiculite and glass fibre, this board holds integrity under heat and meets the needs of domestic fire protection.
Its smaller size is ideal for ceilings, corridors or tight working areas where manoeuvrability matters. With square edges and a thermal conductivity of 0.24 W/mK, it's suitable for direct decoration or plaster finishing. Dimensions: 900mm x 1800mm x 12.5mm.
Key Features
Made in the UK Square edge for direct finish Fire-rated to 30 minutes Lightweight for easy handling Thermal conductivity 0.24 W/mK
Payment & Security
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Designed for Domestic Fire Safety
Knauf’s Fire Rated Square Edge Plasterboard meets domestic fire protection needs with ease. Whether you're boarding out a loft, garage ceiling or corridor, it adds vital resistance without adding weight or complexity.
With added vermiculite and glass fibre, this board is built to slow heat transfer and retain shape under fire. In a metal stud wall with one board each side, it achieves up to 30 minutes fire resistance.
Sized for DIY and Refits
At 900mm wide and 1800mm long, this sheet is easier to manage than full-size boards. Ideal for smaller spaces, single-room projects, or places where access is tight. Quick to move. Quick to install.
Square Edge Means Clean Joins
This square-edged version suits direct decoration. It butts up cleanly to its neighbours and reduces the need for taping and jointing when a flush face is enough. Paint-ready in less time.
Thermal & Acoustic Contribution
Though fire protection is its main benefit, this board also supports insulation goals. Thermal conductivity of 0.24 W/mK and solid density help dampen noise while meeting safety specs.
Built by Knauf. Trusted by Builders.
Knauf is a recognised name in UK construction. This fire board is made to BS EN 520 standards and trusted across residential and commercial projects. Ready to perform. Easy to trust.
Have a question?
If you have any questions about our products or would like to learn more about our shipping options please feel free to contact one of our team today.
