Seven things that go wrong with an acoustic panel order — and what we do about each one.

An acoustic enquiry comes through your business three or four times a year, sometimes six. It is not your day job. The category has its own failure profile, and most of those failures are visible to the client before they are visible to you. The panels arrive in two slightly different shades. The adhesive that wasn't in the box. The site delivery that didn't land on Tuesday. Each of these is the kind of small, recoverable problem that, in front of a client, isn't recoverable.

The list below is not invented. It comes from reading the bottom-rated reviews across PET-felt suppliers in the UK trade. The seven failures recur. The supplier-side answer to each one is decided before the order goes out, or not at all.

The order doesn't arrive on the day you said.

What goes wrong. The site team is on-site Tuesday to install. The panels are shipping from somewhere in mainland Europe via a freight forwarder you've never spoken to. Tracking goes quiet. Tuesday becomes Wednesday. The client is asking when the meeting room is going to be useable.

What we do about it. Felted is made in the UK and dispatched from Chorley on a UK courier with proper tracking. Lead times are committed at the point of order, not estimated. Site delivery dates are tracked back from production rather than promised hopefully. And if a courier loses a consignment between dispatch and delivery, the named contact on your account is a person you can phone — not a contact form, not a chatbot, not a ticket queue. The who do I call answer is a name.

The adhesive fails and the panels come off the wall.

What goes wrong. The panels arrive with adhesive in the box. The installer uses what was supplied. The panels are on the floor by 4pm, in front of the client. The product gets blamed for what was actually an installation-substrate mismatch — the adhesive that came with the order wasn't the right adhesive for the wall it was being put on.

What we do about it. Felted does not ship adhesive. Deliberately. The right adhesive depends on the substrate — plasterboard, brick, painted plaster, primed timber, exposed concrete, glass, wallpaper — and any default we put in the box would be wrong for some of the orders. Felted publishes a free installation guide that walks through substrate-by-substrate and tells you which adhesive type works on which wall. The installer reads it before the work starts, picks the right adhesive for the wall they're working with, and the panels stay up. If the substrate isn't on the chart, the named contact on your account will work it through with you on the phone.

The deliberate non-supply is unusual in the category. It reads as awkward at first encounter. It exists because the alternative produces the failure pattern more reliably than it prevents it.

The panels go up and the client says it sounds the same.

What goes wrong. Panels are specified in too few square metres for the room they're going into. The client expected a noticeable change in how the space sounds. They didn't get one. The supplier's product page promised acoustic improvement; the order delivered fewer panels than the room actually needed. Acoustic disappointment in this category is almost always under-coverage, and under-coverage is a specification problem, not a panel problem.

What we do about it. Two things working together. The Acoustics Estimator on felted.uk takes the room dimensions and the use-case and returns a panel-coverage recommendation calibrated to the actual room rather than a guess. It's public. It runs without a sales-call gate, which means you, your installer, and the client can all run the same numbers and arrive at the same answer.

Behind the estimator, every panel type publishes its NRC value. Not aspirational language about excellent acoustic performance. The actual number, on the spec sheet, that you can show the client. When a project's acoustic claim has to stand up to scrutiny, the calculation is transparent — you can show where the recommendation came from.

The shade you ordered is not the shade that arrived.

What goes wrong. The sample sent at quote stage and the panels delivered to site read as different shades. Or the colour on the product page and the colour in the box don't match. Or two panels in the same order arrived in noticeably different greys. The client points to it. There isn't a recoverable answer at that moment.

What we do about it, in two parts.

The first part is honest material education. PET felt is a recycled-content material — the same plastic as drinking-water bottles, processed mechanically into fibre, compressed into board. Recycled content varies batch-to-batch. Slight shade differences between production runs are a real property of the material, not a defect. We say this on the product page before the order is placed rather than after. The buyer reading carefully knows what they're committing to.

The second part is the verification mechanism that accounts for it. A5 sample cards — free, posted, substantial enough to hold against a wall — not postage-stamp swatches. High-fidelity digital swatches on the product pages. And, where it matters, the named contact who can confirm batch availability before the order goes in. For a project spanning months, ordering from the same batch is a known constraint, not a surprise post-delivery. You can plan around it because we've surfaced it before the quote.

That second mechanism is the one that distinguishes this from the category-typical failure: the dealer who hasn't been told about batch variation finds out when the second tranche arrives in a different shade. The dealer who has been told works around it.

The panels arrive damaged or defective.

What goes wrong. The box opens and there's crumbling foam, an air pocket in a panel, a torn surface, dirt embedded in the felt. Most of the defect complaints visible in this category's negative reviews are foam-and-MLV-flavoured — crumbling, voids, dirty product — defects that come from a different category of acoustic material with different physical failure modes.

What we do about it. Two notes worth being precise on.

First, PET felt is mechanically different from foam and from MLV. It does not crumble. It does not have voids in it that develop in the box. The defect modes the category is best known for are physically less applicable to PET felt as a material. That is not Felted's marketing claim — it's a property of the material.

Second, the QC step that does apply is pre-dispatch inspection. Someone in the workshop inspects every panel before it leaves Chorley. Defects get caught before the box is sealed. For projects that span months and arrive in stages, the same inspection step holds across deliveries — the panels in your second tranche came through the same station as the first.

The product page said one thing, the box contained another.

What goes wrong. The product page carries decorative descriptions. Acoustic figures appear in marketing copy without a calculation behind them. Panel sizes are stated without tolerances. The dimension on the website and the dimension in the box differ by enough to matter on site. The dealer who was quoting from the page now has to explain a discrepancy to a client who is reading the same page.

What we do about it. Felted publishes the cutting guide and the installation guide as PDFs, openly, before purchase. The Acoustics Estimator runs without a sales-call gate. Product pages carry NRC values, panel weights, fire ratings, and dimensions with tolerances stated. The position is straightforward: everything you'd want to verify before buying, we've published. You can audit us against our own claims before the order is placed, and the client can audit you against the same evidence.

For the dealer who's been burned before by a marketing-copy spec that didn't match a box-contents reality, the verification path is direct: read the published documents, run the estimator, check the NRC, and you'll know what's coming before it ships.

The panels smell of plastic when the client walks in.

What goes wrong. The panels go up on Friday. The client walks into the room on Monday morning and the room smells like a new car. The client's facilities lead opens a window. The follow-up phone call to your account manager is not a call anyone wants to take.

What we do about it. PET felt is recycled PET — mechanically the same plastic as a drinking-water bottle, ground and extruded into fibre, compressed into board. There are no chemical adhesives in the panel. There is no foam binder. There are no MLV-style additives. The material doesn't off-gas because of what it is, not because of an additional process we've applied to it.

The trade buyer's specific concern is the smell-test the client will run when they walk into the freshly-installed space. The panel that smells of nothing on install is the panel that doesn't generate the follow-up phone call the next day. That's not a service promise — it's a property of the recycled-PET material.

Seven failures, seven supplier-side decisions.

None of the seven are exotic. Each one shows up often enough in this category's negative reviews to be expected, and each one has a supplier-side answer that has to be in place before the order ships. The Trade Portal exists so the quote can be built without the spreadsheet trawl. The estimator exists so the room can be sized before the order. The published guides exist so the substrate question is answered before the adhesive is bought. The named contact exists so the courier-loss conversation has a person on the other end. The QC step exists so two deliveries to the same project arrive consistent. The honesty about batch variation exists because the alternative is a problem in front of the client three months in.

You're handling acoustics three or four times a year. The supplier you choose is doing this every working day. The work of preventing the seven failures is supplier-side, which is the only place it can usefully happen.