12.5mm Fire Resistant Plasterboard (Tapered Edge)
2.4m x 1.2m | 2.88m² per board
Delivery
We'll get your order to you fast, keeping you in the loop every step of the way.
Most stocked items reach mainland UK in just 3 working days, and many arrive sooner.
On orders over £500 ex VAT. Under that? Just £50 ex VAT, or only £35 ex VAT if you're within 35 miles of our Rotherham depot.
After ordering to confirm your delivery day. No guessing, no chasing us.
On highlighted products. Order before 12pm and we'll have it with you tomorrow.
Available on selected products. Your options and pricing are calculated automatically at checkout.
We deliver nationwide, with Moffett mechanical offload taking care of the heavy lifting.
Sometimes possible, just contact us to find out.
Deliveries are made kerbside, Monday to Friday.
Dates are an estimate, not a guarantee. We deliver to UK mainland addresses. Please contact us before ordering if your postcode starts KW, IV, AB, PH, PA, DD, KY, BT, TR, PL, EX, TQ, HS or ZE, as these may cost more, take longer, or fall outside our delivery area.
Couldn't load pickup availability
Product Description
Product Description
12.5mm Fire Resistant Plasterboard (Tapered Edge) is a fire-rated gypsum board in the full 2400mm x 1200mm sheet size, for lining internal walls, partitions and ceilings that need to resist fire as well as take a finish. It pairs a fire-performing gypsum core with recessed long edges, so larger runs go up with fewer joints and finish flush by taping and filling rather than a full skim.
Each board measures 2400mm x 1200mm x 12.5mm and covers 2.88m², sold per board. The full-sheet format is the efficient choice for open wall and ceiling areas: more coverage per board means fewer joints to tape across the run, and the 2400mm x 1200mm size sits to standard 400mm and 600mm stud and joist centres. Fire board is denser and heavier than a standard board of the same size, so a full sheet is a two-person lift, and a board lifter is worth having for ceilings.
The tapered edge is the defining feature. The two long edges are recessed, so where boards meet they form a shallow channel that scrim tape and jointing compound fill flush, giving a continuous, paint-ready surface without skimming the whole face (though it takes a full skim just as readily if you would rather plaster it out). Behind the finish, the core is what earns the fire rating: aerated gypsum reinforced with glass fibre, which releases its chemically bound water slowly as vapour under fire and holds the calcined board together rather than breaking up.
Fire resistant plasterboard goes onto timber and metal stud partitions, wall linings and ceilings, and into domestic separating walls and steel encasement, wherever a fire-rated lining is specified. It cuts by scoring and snapping or with a plasterboard saw and fixes with drywall screws. Install it in line with the board manufacturer's guidance and the tested system in your project specification: fire resistance is a property of the complete construction (board, framing, fixings, insulation and jointing), not of a board on its own. As a guide, a single 12.5mm layer contributes up to 30 minutes of fire resistance in the correct system, with 60 minutes and beyond reached through additional layers or thicker board.
Key Benefits of 12.5mm Fire Resistant Plasterboard:
- 12.5mm fire resistant gypsum plasterboard in the full 2400mm x 1200mm sheet, for internal walls, partitions and ceilings needing a fire-rated lining.
- Tapered long edges tape and fill flush for a seamless, paint-ready finish without skimming the full face.
- Aerated gypsum core reinforced with glass fibre to maintain integrity at high temperatures.
- Contributes up to 30 minutes of fire resistance as a single layer within a correctly specified system.
- Covers 2.88m² per board, so larger runs go up with fewer joints to tape.
- Sized to standard 400mm and 600mm stud and joist centres.
- Non-combustible gypsum core, classified Euroclass A2-s1,d0 for reaction to fire.
- Cuts by scoring and snapping or with a plasterboard saw, and fixes with drywall screws to timber or metal stud.
- Takes a full plaster skim as readily as a taped-and-jointed finish.
- Insulation UK own-brand board at competitive trade pricing, with bulk pricing available.
Good to know:
- Fire resistance is a system property. The up-to-30-minutes figure is for a single layer in a correctly specified and tested system, not the board alone. For 60, 90 or 120 minutes, follow the manufacturer's tested system.
- Tapered edge, not square. The recessed long edges are made for taping and jointing to a flush finish; ends and cut edges butt square and are jointed like any square joint.
- A two-person lift. The reinforced core makes fire board heavier than standard board, and a full 2400mm x 1200mm sheet is a two-person lift; a board lifter helps on ceilings.
- Not a moisture board. For bathrooms, wet rooms or damp, unheated spaces use a moisture-resistant board, and combine board types where both fire and moisture resistance are needed.
- Keep it flat and dry. Store boards flat, off the ground and protected from damp, and do not fix boards that have got wet.
For lining larger fire-rated walls and ceilings, the tapered edge full sheet is the efficient board: maximum coverage, fewer joints and a flush finish straight off the tape.
Certifications & Standards
Certifications & Standards
Customer Information
Customer Information
Free delivery on orders over £500 ex-VAT. All orders below £500 (ex-VAT) are subject to a £50 delivery charge.
Ordering & Delivery
How do I place an order with Insulation UK?
You can place an order for delivery anytime online. If you want to collect from our distribution centre in South Yorkshire then please email us your requirements at sales@insulationuk.co.uk
and we will send a payment link and collection instructions. If you can’t see what you are looking for or need more information, then call our team on 03003 034 578 and we can sort your order from there.
How do I know what’s happening with my order and when I will receive it?
When you have placed your order, you will then receive an email confirmation, giving you an order reference number and asking you to double check everything is correct on your order such as delivery address, quantities etc. If there are any amendments to be made, then please reply to your confirmation email with any details.
Once the team has processed the order you will receive an email with a BY delivery date, this is the latest date you will receive your delivery.
Your final email will be a 24/48hr notification, on the day of the delivery if you need a more accurate ETA then contact the office on 03003 034 578.
Do you offer next-day delivery?
Yes, we do on certain lines, you will see our next day delivery products marked as NEXT DAY. Order before 12pm for next day delivery (charges will apply)
How much does delivery cost and how long will it take?
Standard delivery is £50 + VAT for all orders below £500 excluding VAT, above £500 excluding VAT delivery is free. Bespoke deliveries can be made but will incur charges. Each product page gives you an estimate delivery by date. For more accurate information call the team on 03003 034 578
Can I choose a specific delivery date or time slot?
We will endeavour to try and accommodate a preferred date, if you need a delivery on a certain day, then please call us on 03003 034 578.
Do you deliver nationwide?
We deliver across most of the UK; however, some postcodes are restricted due to their location. Check out our delivery map for more information. If you find that you are in area we don’t deliver to, we have access to a wide range of haulage options, please call the team on 03003 034 578 to discuss your requirements further.
Will the driver help unload the insulation products?
Most of our deliveries are made with vehicles with mechanical off-load (known as a moffett or fork-lift), the driver will leave them in a safe place of your choice. They will help as much as they are allowed but are not insured to bring anything into a property.
What happens if my order arrives damaged or incomplete?
In the unlikely event your order arrives damaged, then please contact within 48 hours at sales@insulationuk.co.uk with any images of the damage and the team will be in touch. If there is anything missing, then notify the team within 48 hours on 03003 034 578
What if my order doesn’t arrive and I have paid for trades to be on site, can I claim anything towards the costs I have incurred?
We advise not to have trades booked in and around the day of your delivery. Things can happen beyond our control, and your delivery may be delayed or abandoned. We cannot be held liable for any consequential loss such as tradesman wages etc.
Product Advice & Support
How do I know which insulation product is right for my project?
With such a variety of insulation products, we fully understand making sure you have the right one can seem daunting. Our team have over 50 years of experience in the construction industry and there isn’t a question they haven’t been asked! Speak to our technical team on 03003 034 578 and they will be happy to offer some help and guidance.
Do you offer technical advice or support before I buy?
Yes we do! Just call 03003 034 578 and ask for our technical team and we will be happy to support you.
Product Information & Suitability
Product descriptions on this website are provided as general guidance only and are not a substitute for the manufacturer’s Technical Data Sheet (TDS), fire classification information, and the project’s design/specification requirements. Suitability depends on the full build-up and intended use (including any requirement for encapsulation, coverings, and compliance with Building Regulations and the project fire strategy).
It is the customer’s responsibility to confirm, before ordering, that the product specification and performance are suitable for the intended application by reviewing the relevant TDS and taking professional advice where required. If you are unsure, contact us before purchase and provide your intended build-up so we can confirm what information we can support.
Nothing in this notice limits or excludes your statutory rights
Can I speak to someone to confirm product specifications?
Of course you can! There is also a range of data sheets and guides available on the product pages under Technical Information.
Are your products suitable for both DIY and trade customers?
Yes, they are. If you are new to DIY projects involving insulation,
then we advise to always do your research. We have a handy guides section which may help.
Do you offer fire-rated or eco-friendly insulation options?
Yes, we do. Fire ratings are indicated in the specification table on the product page, and our sustainable range is continually growing.
Pricing & Payments
Do you offer trade or bulk-buy discounts?
We always aim to offer the best price online; however we do offer project pricing for larger orders, speak to our sales team with your requirements on 03003 034 578.
What payment methods do you accept?
We accept all major cards including American Express, as well as Apple Pay, Google Pay and PayPal
Can I set up a trade account with credit terms?
We do offer trade accounts, however there are certain criteria we ask for, and any credit account application is subject to credit checks. Call the team on 03003 034 578 to discuss any credit applications.
Do your prices include VAT?
The website has a toggle at the top right of the page so the prices can be displayed including and excluding VAT. VAT, where applicable, is charged at checkout.
Returns & Cancellations
Can I return unwanted insulation products?
Contact the team via email sales@insulationuk.co.uk with the items you wish to return and any other information. Please note if we you need us to collect any unwanted items,
a collection fee will apply.
How do I arrange a return or exchange?
Contact the team via email sales@insulationuk.co.uk or check out our refund policy.
Are there any restocking fees?
Restocking charges will apply in certain instances, please contact the team via email at sales@insulationuk.co.uk check out our refund policy.
What if I’ve ordered incorrectly or need to cancel my order?
Contact the team via email as soon as possible. The best way to get in contact is to reply to any of the emails we have sent you, they will come straight through to the team and will have any relevant order information already on there.
Installation & Compliance
Do you offer installation services or just supply materials?
We do not offer any installation services; we are a supplier of insulation and building materials.
Can I get a datasheet or certificate of performance for your products?
Yes, data sheets can be found in the Technical Information drop down on the product page.
How should I store insulation products before installation?
There are a variety of insulation products each with their own storage instructions. Generally, please keep them off the ground, in a dry area, away from the elements.
Sustainability & Quality
Are your insulation products environmentally friendly?
This depends on the individual products, data sheets are available,
and any environmental benefits are noted on the product pages.
Do your products help reduce energy bills?
The correct insulation properly installed can reduce heat loss from a building and therefore help reduce energy costs.
Are your products made in the UK or imported?
With such a wide variety of products some are made in the UK and some are imported.
Customer Service & Support
How can I contact your support team?
By phone on 03003 034 578, email sales@insulationuk.co.uk or via our
webchat online
What are your opening hours?
Monday to Friday 8am to 5pm for sales and technical support, orders can be placed on line 24/7
How quickly can I expect a reply to my enquiry?
We aim to respond to our customers as quickly as possible.
Technical Details
- Brand:
- Insulation UK
- Material:
- Gypsum
- Length:
- 2400 mm
- Width:
- 1200 mm
- Thickness:
- 12.5 mm
- Unit Coverage:
- 2.88 m²
- Weight Per Item:
- 30 kg
- Edge Type:
- Tapered
