Dodo Mat & Dodo Fleece Review : Does It Work?

I’ve now used Dodo Mat’s sound deadening and Dodo Fleece insulation system through Scottish winters and summer heatwaves, and more condensation drama than I care to admit. This is what actually works, what’s overpriced nonsense, and where I went wrong so you don’t have to.

Quick Verdict

Dodo Mat DEADN Hex: ⭐⭐⭐⭐⭐
Price: £38-£100 depending on coverage (at time of review)
Best for: Anyone serious about reducing road noise and panel rattle
CHECK PRICE ON AMAZON UK →

Dodo Fleece EVO: ⭐⭐⭐⭐
Price: £37-£50 (at time of review)
Best for: Filling voids and layering over foam liner
CHECK PRICE ON AMAZON UK →

Dodo Thermo Liner Pro: ⭐⭐⭐⭐⭐
Price: £100-£130 (at time of review)
Best for: Primary insulation layer on walls and roof
CHECK PRICE ON AMAZON UK →

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Why I Tested These Products

Let’s get one thing straight: my first van conversion was an absolute disaster. I went cheap on insulation. Used that crinkly bubble wrap rubbish from Screwfix and wondered why I was waking up in a puddle every morning. The van sounded like a biscuit tin on the motorway.

Second time around, I did my homework. Dodo Mat kept appearing in every proper conversion forum, recommended by people who actually live in their vans year-round rather than Instagram weekenders. So I bit the bullet, spent the extra £200, and haven’t looked back.

In this comprehensive dodo mat & dodo fleece review, I will share my experiences with these products.

I tested this system in a 2016 VW Transporter T6 LWB. High roof. Completely stripped back to bare metal.

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The Dodo Mat System: How It Actually Works

Dodo recommends a two-stage approach, and they’re not wrong:

Stage 1: Sound deadening mat on bare metal (Dodo DEADN Hex)
Stage 2: Thermal insulation over the top (Dodo Thermo Liner Pro + Dodo Fleece EVO for voids)

This isn’t marketing fluff. The butyl mat kills vibration and boom. The foam liner provides your main thermal barrier. The fleece fills those awkward gaps where the foam won’t reach. Each layer does a specific job, and skipping one leaves you half-sorted.

I learned this the expensive way. My first attempt, I only used the fleece. Saved £60. Regretted it within a week when every pothole sounded like a gunshot.

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Dodo Mat DEADN Hex: The Sound Deadening Mat

Price: £38 for 20 sheets (1.8sq.m) up to £68 for 50 sheets (4.7sq.m)
Coverage needed: Budget 4-8sq.m for a SWB van, 8-12sq.m for LWB

What Makes DEADN Hex Different

This is a butyl-based mat with a distinctive hexagonal pattern on the aluminium face. The pattern isn’t just for looks — it makes the stuff incredibly flexible and easier to mould around curves and ribs. Much better than flat Chinese mats I’ve used before that crack when you bend them.

Each sheet is self-adhesive. Peel off the backing paper, stick it to clean metal, roll it down hard with a wallpaper roller. Done. The butyl compound is properly sticky in both cold and hot weather, which matters more than you’d think when your van’s sitting in Scottish sleet one day and baking in a car park the next.

Real-World Installation Experience

I started with the roof. Big mistake. Should’ve started with the side panels to get my technique sorted before tackling the awkward overhead work. Live and learn.

The mat cuts easily with heavy-duty scissors or a Stanley knife. I found scissors cleaner for straight edges, knife better for trimming around awkward shapes. Wear gloves — the cut edges are sharp enough to slice your fingers open. I’ve got the scars.

Temperature matters. I installed mine in October (about 12°C). Perfect. The adhesive stuck brilliantly. Mate of mine tried in January at 2°C and the backing paper wouldn’t peel properly. If you’re working in winter, warm the sheets by a heater for 10 minutes first.

You don’t need 100% coverage. I did about 60% coverage on the walls (focusing on large flat panels), 80% on the roof, and skipped the floor entirely because I was planning carpet anyway. This approach worked brilliantly and saved about £40 worth of mat.

Time invested: Roughly 8 hours for a LWB van doing walls and roof with proper prep and cleaning.

The Before and After Difference

Before Dodo Mat: Every journey sounded like I was driving a shipping container full of cutlery. That tinny, resonant boom that makes motorway driving exhausting. You know the sound — it’s what cheap vans sound like.

After Dodo Mat: The transformation is genuinely shocking. Road noise dropped maybe 30-40%. Not silent — it’s still a van — but now conversations are possible at 70mph without shouting. The resonance is just… gone. Panels sound solid when you tap them, not hollow.

The biggest win? Rain. Before, rain on the roof was unbearable. After, it’s almost pleasant. Gentle drumming rather than machine-gun rattles.

You can grab the exact 20-sheet pack I used from Amazon UK for around £38, or go larger if you’re doing a proper job.

The Good

• Actually works: This isn’t subtle. The noise reduction is immediate and dramatic
• Easy to use: Cut with scissors, stick it down, job done. No special skills needed
• Flexible: That hex pattern really does make it wrap around curves beautifully
• Stays stuck: 18 months in and not one piece has come unstuck, despite temperature extremes
• Smells fine: Some butyl mats absolutely reek. Dodo’s has a slight smell for a day or two, then nothing

The Bad

• Heavy: This stuff adds weight. My 50-sheet box was a proper workout to carry upstairs
• Sharp edges: Seriously, wear gloves. I bled on my van three times during install
• Expensive compared to Chinese alternatives: You can get no-name mats for half the price. They’re rubbish. Don’t bother
• Adhesive is aggressive: Once it’s down, it’s down. Peel it up and you’ll leave residue and possibly damage the mat
• Backing paper tears: The release paper on the back sometimes rips rather than peeling cleanly. Annoying but not a dealbreaker

Where to Use It (And Where to Skip It)

Definitely use:

• Roof panels (biggest noise gains here)
• Side panel large flat areas
• Rear door panels
• Bulkhead behind driver

Skip it:

• Floor (unless you’re not using underlay)
• Inside door frames (access issues)
• Tiny panels under 15cm × 15cm (not worth the faff)

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Dodo Thermo Liner Pro: The Primary Insulation

Price: £100-£130 for 5-10m rolls (at time of review)
Thickness: 10mm (also available in 6mm and 15mm variants)

Why Thermo Liner Pro Matters

This is your main thermal barrier. Closed-cell foam with aluminium foil facing. Self-adhesive. Goes on top of your sound deadening (or straight to metal if you skipped stage one, though you shouldn’t).

The 10mm Pro version is the sweet spot. The 6mm basic version is fine if you’re tight on space, but you’ll lose thermal performance. The 15mm version is brilliant if you’ve got room, but most panel vans don’t once you factor in framework and cladding.

Installation Reality Check

Much easier than the sound deadening. Lighter. Larger pieces. The self-adhesive is even more aggressive than the butyl mat, which is both good and terrifying. Measure twice, stick once. There’s no repositioning this stuff.

I used spray adhesive (Trimfix) on areas where the self-adhesive alone seemed sketchy — mainly overhead on the roof. Probably overkill, but 18 months later nothing’s drooped.

The aluminium face reflects radiant heat, which actually works. Summer 2024 was brutal in the UK (30°C+ for weeks). My van stayed noticeably cooler than mates’ vans with just basic foam insulation. Not cool, but bearable.

Thermal Performance: The Numbers Game

Dodo claims a thermal conductivity of 0.040W/mK. In English: it’s pretty good. Not as good as Celotex (0.022W/mK) but far better than cheap camping mat foam (0.050W/mK+).

Real-world winter test: Outside temperature -2°C, inside 18°C with my diesel heater running at half power. The van held temperature beautifully. Barely any cold spots except around the window frames (which you can’t insulate anyway).

Summer test: Outside 28°C, inside 22°C with good ventilation. Without any insulation, it’d easily hit 35°C inside.

The Good

• Genuinely effective: Noticeable temperature regulation summer and winter
• Self-adhesive works: Stuck to metal and to the sound deadening equally well
• Closed-cell foam: Won’t absorb water, won’t support mould growth
• Reasonable thickness: 10mm doesn’t eat much interior space
• Aluminium face: Provides a decent vapour barrier and reflects radiant heat

The Bad

• Expensive: This is where the cost really adds up. Budget £100-£130 for a proper LWB job
• One-shot application: The adhesive is so strong you get one chance to position it correctly
• Needs companion insulation: On its own, 10mm isn’t enough for UK winters if you’re living in the van
• Can tear: The foam is quite soft. If you’re rough with it, you’ll rip it
• Backing paper nightmare: Same issue as the sound deadening — sometimes tears rather than peeling

Coverage Reality

My LWB Transporter took:

• 2 × 10m rolls for the walls and roof (about £220 total)
• Extra roll for floor underlay (used Dodo Super Liner instead, which is cheaper)

Total cost for thermal liner: £220. Not cheap. But spread over 18 months of comfortable living, I’m not complaining.

The 10mm Pro version I used is available here on Amazon UK — currently around £100 for a 5m roll.

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Dodo Fleece EVO: The Void Filler

Price: £37-£50 depending on roll size (at time of review)
Thickness: 50mm loft

What Fleece EVO Actually Is

Recycled plastic bottle insulation. Looks and feels like thick quilt wadding. Completely itch-free (genuinely — I’m allergic to fibreglass and had zero issues). Used to fill the deep voids between the metal ribs where the foam liner can’t reach.

This is the EVO version, which is tighter and less “sheddy” than the original Dodo Fleece. Still sheds a bit when you cut it, but nothing like the fibreglass horror show of cheaper alternatives.

Where Fleece EVO Goes

Panel vans have deep voids running vertically between the inner and outer skins. These voids are thermal leaks if you don’t fill them. The Thermo Liner sits flat on the ribs, but the gaps behind need something bulkier. That’s where Fleece EVO comes in.

I stuffed it into:

• All the vertical voids in the side panels
• Roof cavities between ribs
• Behind the wheel arches
• Door panel voids (careful here — don’t block drainage holes)

You can cut it with scissors or just tear it by hand. I found tearing faster and neater for irregular shapes. Use spray adhesive to hold it in place (it’s not self-adhesive).

Thermal Boost Reality

Does it make a difference? Honestly… it’s hard to quantify. The combination of Thermo Liner + Fleece definitely feels warmer than Thermo Liner alone, but I didn’t do rigorous testing. I’d estimate maybe a 2-3°C improvement in winter mornings.

The bigger win is reducing air movement within the panel cavities. Cold air circulating behind your walls creates cold spots. The fleece stops that circulation.

The Good

• Zero itch: Genuinely pleasant to work with compared to loft insulation or fibreglass
• Easy to shape: Tear it, cut it, stuff it. Very forgiving
• Eco-friendly: Made from recycled bottles, which is a nice bonus
• Won’t absorb water: Critical in a damp British van
• Fire tested: Conforms to vehicle interior flammability standards (ISO 3795:1989)

The Bad

• Messy: Still sheds fibres when you cut it, just less than the old version
• Requires spray adhesive: Budget another £10-15 for Trimfix or similar
• Easy to over-stuff: Too much fleece compresses and loses effectiveness — use just enough to fill the void
• Not cheap: Insulation made from bottles shouldn’t cost this much, but here we are
• Needs companion products: On its own, fleece won’t cut it. It’s a supplementary layer

Coverage and Cost

One 10m roll (3.7sq.m) was enough for all my side panel voids and roof cavities in a LWB van. I probably could’ve used another half roll for a perfect job, but I was out of budget by this point.

Total cost for fleece: £37. Spray adhesive: £12. Not the expensive part of the system, but it adds up.

Grab the Dodo Fleece EVO roll I used from Amazon UK where it’s usually around £37.

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The Complete System: Does It Actually Work?

The van has had plenty of use in all weathers. Scottish Highlands winter, Lake District autumn, Cornwall summer. Here’s the honest assessment.

Winter Performance (November-February)

Outside temp: -5°C to 8°C typically
Inside temp with Webasto diesel heater: 16-20°C maintained comfortably
Condensation issues: Minimal with proper ventilation (roof vent + cracked window)

The insulation keeps the heat in. My diesel heater runs on low most of the time rather than cycling between full blast and off. This saves fuel and creates a much more comfortable environment. I’d estimate the insulation system saves me £20-30/month in diesel heating costs compared to an uninsulated van.

Cold spots? The window frames, as expected. The back doors are slightly cooler than the walls. Otherwise, remarkably even temperature throughout.

Summer Performance (June-August)

Outside temp: 20-30°C
Inside temp with good ventilation: 2-5°C cooler than outside
Comfort: Bearable, not cool

Let’s be honest: no amount of insulation will make a metal box comfortable in 30°C heat without air conditioning. But this system definitely helps. The aluminium face on the Thermo Liner reflects a ton of radiant heat, and the thermal mass slows the rate of heat gain.

Park in shade, crack the windows, run a 12V fan, and you’re fine. I’ve worked from the van comfortably on 28°C days.

Sound Performance: 18 Months Later

Still brilliant. The road noise reduction hasn’t degraded at all. Motorway cruising is comfortable for hours. Rain on the roof is ambient rather than aggressive. Panel rattle is non-existent.

Passengers always comment on how quiet the van is. I drove a mate’s uninsulated Sprinter last month and it was shocking how loud it was by comparison.

Durability Assessment

Nothing’s come unstuck. Nothing’s sagged. No signs of moisture absorption or mould growth. The system is holding up perfectly.

The only wear is on the fleece in a couple of places where I was too rough during cladding installation and pulled a bit out. Entirely my fault.

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Cost Breakdown: What I Actually Spent

Here’s the full accounting for a LWB Transporter high roof:

Dodo Mat DEADN Hex (50 sheets for walls + roof): £68

Dodo Thermo Liner Pro 10mm (2 × 10m rolls): £220

Dodo Fleece EVO (1 × 10m roll): £37

Spray adhesive (2 cans): £12

Total: £337

For comparison, the cheap approach (Chinese butyl mat + camping foam + loft insulation) would’ve cost about £150. The premium approach (Dynamat + Armaflex + sheep’s wool) would’ve been £500+.

Dodo sits right in the middle. British-made, proven, and not stupidly expensive.

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Common Mistakes

1. Not Cleaning the Metal Properly

I rushed the prep on my first panel. Used white spirit quickly, didn’t wait for it to dry completely. The sound deadening stuck… for about two weeks. Then one corner lifted. Had to peel it off and start again.

Do this instead: Clean with isopropyl alcohol or proper panel wipe. Let it dry completely. The extra 10 minutes is worth it.

2. Starting With the Roof

The roof is the hardest surface to work on. You’re reaching above your head, fighting gravity, and precision matters because it’s highly visible. I should’ve practiced on the side walls first.

Do this instead: Start on the side panels behind the cladding where mistakes won’t show. Build confidence, then tackle the roof.

3. Not Using Enough Spray Adhesive on the Fleece

I tried to save money on spray adhesive. Used it sparingly. The fleece stayed in place during installation but shifted later when I was fitting the cladding and pushing against it.

Do this instead: Be generous with spray adhesive. It’s £6 a can. Don’t be tight.

4. Compressing the Fleece Too Much

More isn’t better with fleece insulation. If you compress it into a void, you’re squashing out the air gaps that provide the insulation. I realised this too late and had to pull some out and re-do sections.

Do this instead: Fill the void loosely. The fleece should sit naturally without being stuffed or compressed.

5. Installing in Cold Weather

I did part of the job in January. The adhesive backing on both the mat and the liner was a nightmare to peel off. Took three times longer than it should have.

Do this instead: Wait for decent weather (10°C+) or warm everything with a heater first.

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Frequently Asked Questions

Is Dodo Mat better than Dynamat?

I’ve not used Dynamat personally, but based on reviews and specs, they’re very similar. Dynamat has better brand recognition in the car audio world. Dodo Mat is designed specifically for the UK van conversion market and is generally cheaper. Both are butyl-based and will perform similarly.

If you’re in the UK, go Dodo. Easier to source, better value, and designed for our climate.

Do I really need the sound deadening AND the insulation?

Technically, no. You can skip the sound deadening and just use thermal insulation. But you’ll regret it. The noise reduction from the butyl mat is massive and totally worth the extra £60-80.

The insulation alone will provide some sound damping, but nothing like the butyl. They work together brilliantly.

Can I use cheaper alternatives?

For the sound deadening mat, probably not worth it. The Chinese mats I tried before were noticeably inferior — less flexible, worse adhesive, questionable quality control.

For the insulation, you’ve got more options. Armaflex is excellent (but expensive). Celotex works (but awkward to fit and needs careful vapour barriers). Sheep’s wool is good (but itchy and absorbs moisture).

Dodo’s system is designed to work together and is good value for the quality.

How much do I actually need for my van?

SWB van (like a standard Transporter):

• Sound deadening: 20-30 sheets (1.8-2.8sq.m) = £38-£50
• Thermal liner: 1-2 × 10m rolls = £110-£220
• Fleece: 1 × 10m roll = £37

LWB van (like my Transporter LWB):

• Sound deadening: 40-50 sheets (3.7-4.7sq.m) = £65-£80
• Thermal liner: 2-3 × 10m rolls = £220-£330
• Fleece: 1-2 × 10m rolls = £37-£74

These are ballpark figures. Vans with more windows need less insulation. High roofs need more.

Will this stop all condensation?

No. Insulation reduces condensation by keeping interior surfaces warmer (reducing the temperature differential), but it won’t eliminate it completely in a UK climate. You still need proper ventilation.

I run a roof vent fan and crack a window at night. Still get minor condensation on the windows themselves, but the walls and roof stay dry.

Can I install this alone or do I need help?

I did it solo over about 3 days (working slowly and properly). The roof sections are easier with a second person to hold things in place while you position them, but it’s not essential.

If you’re not confident with DIY, budget another £300-500 for professional installation. Most conversion specialists charge £40-60/hour labour.

Is it actually eco-friendly?

The Fleece EVO is made from recycled plastic bottles, which is genuinely good. The butyl mat and foam liner are petroleum-based products, so less eco-friendly. Dodo makes a point of British manufacturing, which reduces transport emissions.

It’s better than cheap Chinese alternatives, but if eco credentials are your priority, look into sheep’s wool or recycled denim insulation (though both have compromises).

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Alternatives Worth Considering

If Dodo is Out of Budget

Silent Coat: About 20% cheaper than Dodo, still decent quality. Mixed reviews on adhesive longevity.
Noico: Cheapest butyl mat that’s still halfway decent. Very budget-friendly if you’re skint.
For insulation: Basic camping mat + Reflectix will work, but with significantly worse performance.

If You Want Premium

Dynamat + Armaflex: The gold standard, about 40% more expensive. Marginal gains for the extra cost in my opinion.
Sheep’s wool insulation: Excellent thermal performance, renewable, but itchy to work with and needs moisture management.

If You Want Something Different

Spray foam insulation: Some people swear by it. I’m skeptical — it’s permanent, hard to remove if you cock up, and creates moisture traps if not done perfectly. Proceed with caution.

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My Final Recommendation

Buy the Dodo system. All of it. Do it properly.

I’ve seen too many vanlifers try to cut corners on insulation and regret it. You can’t retrofit this stuff without ripping out your interior. Do it once, do it right.

Is it perfect? No. It’s expensive, occasionally frustrating to install, and won’t transform your van into a luxury apartment. But it’s good quality, made in Britain, widely proven, and available everywhere including Amazon UK with next-day delivery.

The noise reduction alone justifies the cost. The thermal performance is a massive bonus. And 18 months in, I have zero regrets about spending the extra £200 over budget alternatives.

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Affiliate Disclosure: This article contains Amazon affiliate links. If you purchase through these links, I may earn a small commission at no extra cost to you. This helps keep TheFeralWay running and allows me to keep testing gear like a lunatic in Scottish winters.