PVC Prices Keep Moving. Here's How to Quote Without Getting Burned.
PVC pipe has had multiple rounds of price increases in the last few years and there's no sign it's settling. If you're quoting jobs weeks or months out, you're carrying the risk — unless you structure your quotes to pass it on.
Ben Rayner· TappaYou quote a drainage fitout in August. The customer sits on it for six weeks. The builder pushes the start to January. By then your merchant has put through a PVC price increase — third one in eighteen months — and your materials allowance is short by $1,400. Most plumbers eat this. "It'll damage the relationship." Sometimes. But absorbing every materials movement is a slow drain on margin that adds up across a year.
Why PVC pricing is more volatile than most plumbers expect
PVC resin is manufactured from ethylene and chlorine — both energy-intensive feedstocks. When energy costs rise, resin prices follow. Add shipping costs, exchange rate movements, and the fact that Australia imports a significant portion of its PVC compound and fittings, and you have a product that can move 15–40% in a relatively short window without much public warning.
Unlike copper, which tracks the London Metal Exchange daily and can be monitored, PVC moves in tranches — announced by distributors with 30–90 days notice in good times, less in tight markets. By the time you hear about it from your merchant, the change is often already locked in.
The products that move most: stormwater and DWV drainage pipe (high volume, competitive, most exposed to import cost), pressure-rated pipe (larger price swings), and fittings (often manufactured offshore and sensitive to exchange rates). These are the lines that can gap your materials allowance on a drainage-heavy job.
Three ways to structure quotes that protect your materials margin
- Separate labour and materials. "Labour: $4,800. Materials: at trade price at time of order." This is standard on commercial work. On residential it's less common — but customers who understand it respect the transparency. You're not inflating to cover risk, you're passing cost through at cost.
- Set a validity window. "This quote is valid for 30 days." State it explicitly in the document. Most customers accept this without question. The ones who push back on a 30-day validity window are the ones who'd argue about a price increase later anyway.
- For large jobs, lock in supply before you commit. Ask your merchant to hold pricing on a formal order for 60 days. Some will, especially on volume. That's a fixed cost you can quote against.
How to have the conversation when prices have already moved
If the quote is approved and a price increase has landed since, get ahead of it — don't wait until the invoice. Call the customer: "Materials have moved since we quoted. I want to talk through the options before we order." Early conversations are almost always easier than explaining a higher invoice after the fact.
If the increase is small — under $300 on a residential job — weigh it against the relationship and the time the conversation will take. If it's material, anything over 5% of the job value, it's worth the call.
How to get ahead of the next increase
Most merchant reps will flag upcoming price changes if you ask them to. Build a relationship with your main rep and ask to be on the notification list for PVC and fittings movements. A 30-day heads-up lets you order ahead, quote ahead, or at least have the materials conversation before the customer asks.
Practical note
Check your merchant's pricing on DWV and stormwater pipe before quoting any job with significant drainage scope. Prices on these products are updated more frequently than most plumbers realise. Five minutes of price checking saves an uncomfortable conversation six weeks later.