Acustop Acoustic MDF Slimline Overlay Board
1200mm x 600mm | 0.72m² per pack
FREE delivery over £500 excluding VAT
Acustop Acoustic MDF Slimline Overlay Board
1200mm x 600mm | 0.72m² per pack
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FREE delivery over £500 excluding VAT
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Product Description
Product Description
Acustop Acoustic MDF Slimline Overlay Board is a low-profile acoustic floor overlay from the Tekfon Acustop range, made up of a 100% twice recycled 10mm PET resilient mat bonded to a 9mm moisture resistant MDF facing. It is laid as a floating floor over an existing timber or concrete subfloor to reduce impact and structure-borne noise passing between storeys. It is an overlay rather than a structural deck, so it is installed fully supported over a subfloor that already carries the load, and it is designed to work alongside a recognised acoustic ceiling treatment below.
The whole build-up adds 19mm to the finished floor level, and for most buyers that is the deciding figure. Deeper platform decks add 28mm, 32mm or more, which means easing door bottoms, reworking stair nosings and rethinking every threshold on the job. At 19mm those problems largely disappear, which is why Slimfloor 19 turns up repeatedly in flat conversions, HMO upgrades, refurbishments and occupied properties where the floor level simply cannot move.
Each board measures 1200mm x 600mm, covers 0.72m² and is supplied individually rather than by the pack, with tongue and groove machining to all four edges. Of the 19mm total, a full 10mm is resilient PET mat, so the majority of the build-up is doing acoustic work rather than making up thickness. Under laboratory test to BS EN ISO 10140-3:2021 and rated to BS EN ISO 717-2:2020, the board returned a weighted reduction of impact sound pressure level of ΔLw = 21 dB, with spectrum adaptation terms of C<sub>I,Δ</sub> −10 dB and C<sub>I,r</sub> −1 dB. Testing was carried out at the University of Salford.
That figure is worth reading carefully, because acoustic flooring is a category where published numbers are often quoted without saying what was measured. The ΔLw value above is the improvement the board itself delivers when applied over an existing floor structure that already provides some impact reduction of its own. It is a product-level laboratory result, arrived at by an engineering method giving indicative figures. It is not a whole-floor result, and it does not on its own demonstrate compliance with Approved Document E: Part E performance standards are whole-construction requirements verified by pre-completion testing or Robust Details, and no single board satisfies them alone.
Reaching those standards depends on the complete Tekfon system being used, and the ceiling below matters as much as the floor above. The specified treatment is two layers of 15mm acoustic plasterboard fitted to resilient bars at 400mm centres, plus a 100mm 60kg/m³ slab fitted between the joists or into the ceiling void, with all edges sealed using acoustic sealant. Laying the boards without that ceiling treatment will not deliver the tested result.
The performance comes from separation rather than mass. The PET mat sits between subfloor and MDF facing as a resilient layer, absorbing footfall energy and vibration before it can pass into the structure below. Because the mechanism is decoupling, the perimeter detail matters as much as the board: any hard contact between the floating deck and the surrounding walls or skirtings gives sound a route straight around the isolation, which is why the Tekfon acoustic foam perimeter strip is a required component rather than an optional extra.
Boards are laid in a half bond pattern, starting as far from the doorway as possible, with tongues cut from any board abutting a wall. Tongue and groove joints are tightly butted and glued using the Tekfon Water Resistant 2 in 1 Adhesive, with pipe and service penetrations sealed using Tekfon Acoustic and Intumescent Mastic. Mechanical fixings are not used except where two cut edges meet at a doorway. The finished deck takes carpet with underlay, LVT and vinyl directly, giving a hard-wearing surface ready for the floor covering without further overboarding.
Key Benefits of Acustop Acoustic MDF Slimline Overlay Board:
- Adds only 19mm to the finished floor level, keeping door heights, stair rises and threshold details intact.
- A full 10mm of the 19mm build-up is resilient PET mat, so most of the depth is working acoustically.
- Laboratory tested reduction of impact sound pressure level of ΔLw = 21 dB to BS EN ISO 10140-3:2021, rated to BS EN ISO 717-2:2020 and tested at the University of Salford.
- Resilient mat made from 100% twice recycled PET, using seven recycled bottles per board.
- 9mm moisture resistant MDF facing giving a hard-wearing deck ready for finishes.
- Tongue and groove machined on all four edges for tight, glued joints across the whole floor.
- Works as an overlay over concrete, screed and existing timber subfloors.
- 1200mm x 600mm board covering 0.72m², sized for carrying up stairs and working in occupied rooms.
- PET mat is considered hypoallergenic and the board is extremely low in VOCs.
- Takes carpet with underlay, LVT and vinyl floor finishes.
- Part of the full Tekfon Acustop system, with matching perimeter strip, adhesive and acoustic mastic available.
19mm Acustop Slimfloor good to know:
- This is an overlay, not a structural deck. It must be laid fully supported over an existing timber or concrete subfloor. It is the customer's responsibility to confirm the subfloor can provide the support required, and noggins or additional support must be fitted where needed.
- The tested performance applies to the complete Tekfon system. All specified components must be used, and the acoustic ceiling treatment below the subfloor is integral to how the floor performs.
- The ΔLw 21 dB figure is a product-level result, not a whole-floor one. It does not on its own demonstrate compliance with Approved Document E, which is verified by pre-completion testing or Robust Details.
- The acoustic perimeter strip is a required component. Without it the floating deck bridges to the walls and skirtings and the isolation is lost.
- Boards measure 1200mm x 600mm and are sold individually, each covering 0.72m².
- Tongue and groove joints are glued with the Tekfon Water Resistant 2 in 1 Adhesive. Mechanical fixings are not used except where two cut edges meet at a doorway.
- Leave the floor untrafficked for at least 24 hours after laying, before skirtings and floor finishes go down.
- Tekfon list carpet with underlay, LVT and vinyl as suitable finishes. Tiled and heavy rigid finishes are not listed, so confirm with Tekfon Technical before specifying one.
- In bathrooms and kitchens, units are mounted on a separate plywood or OSB platform on isolating pads rather than fixed straight through the board.
- New partitions are built directly off the subfloor and isolated from the panels using the acoustic foam perimeter strip.
- Pipe and service penetrations pass through an oversized hole sealed with Tekfon Acoustic and Intumescent Mastic.
- The MDF facing is moisture resistant but not waterproof: store boards flat, off the ground and dry before installation.
Where the noise is footfall and the constraint is height, Slimfloor 19 answers both at once: a deep resilient layer inside a slim overall build-up, with a published laboratory result behind it rather than a number borrowed from a regulation.
Certifications & Standards
Certifications & Standards
Technical Datasheets
Technical Datasheets
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:
- Tekfon
- Material:
- MDF
- Manufacturers Part Number:
- PR008472
- Size:
- 1200mm x 600mm x 19mm
- Length:
- 1200 mm
- Width:
- 600 mm
- Thickness:
- 19 mm
- Unit Coverage:
- 0.72 m²
- Qty Per Pack:
- 1 Items
- Applications:
- Acoustic Floor Overlay
- Edge Type:
- Tongue and Groove
