By Steve Skeldon, Above Ground Product Manager for Wavin
With construction cost pressures continuing to influence project decisions, recent UK Construction PMI data highlights why merchants are playing a more active role in helping installers make the right product choices at the counter.
As installers look to protect margins and keep jobs moving, demand is growing for products that save time on site, reduce the risk of call‑backs and work within the tighter spatial constraints of modern homes. For merchants, this puts greater emphasis on stocking solutions that are easy to specify, straightforward to install and suited to today’s layouts.
Compact plumbing systems are central to this. As kitchens and bathrooms continue to prioritise usable storage and streamlined cabinetry, bulky traditional fittings are becoming harder to accommodate. For merchants, this creates a clear opportunity to stock and recommend smarter, space saving products that reflect modern specifications and solve common onsite challenges.
Why compact solutions matter at the counter
Traditional U‑bend and P‑trap water‑seal systems have long been familiar fixtures on merchant shelves. However, its curved design and reliance on standing water increasingly conflict with the realities of modern housing layouts. Installers working on compact kitchens, slimline units and fitted bathroom furniture frequently raise concerns around restricted under‑sink space and awkward installation requirements.
For merchants, these challenges often come through in recurring conversations: how drainage can accommodate modern homes with built‑in storage, or how fittings can be installed without the need to cut into cupboards or floors. As these discussions become more common, there’s growing value in offering solutions that better align with the way modern homes are now designed and built.
A smarter alternative to traditional traps
Traditional water‑seal traps can present ongoing challenges in modern installations. The curved design makes them prone to collecting food waste, hair and grease, increasing the risk of blockages and call‑backs. Performance is also dependent on a retained water seal, which can be compromised through evaporation, siphonage or infrequent use – particularly in guest bathrooms or secondary kitchens.
HepVO from Wavin Osma offers a modern, waterless alternative designed to remove these issues altogether. Using a self‑sealing silicone membrane HepVO prevents odours and gases from entering occupied spaces, without relying on standing water.
The silicone membrane allows wastewater to pass through whilst forming a reliable, compact seal that isn’t compromised by evaporation, siphonage or movement. In addition, the design helps to stabilise pressure within the waste system, reducing the gurgling sounds often associated with traditional traps under negative pressure, and also removing the requirements for an additional AAV on the horizontal branch pipework.
Designed with today’s layouts in mind, HepVO’s compact design allows the fitting to be installed either vertically or horizontally, while its slim profile maximises space in cupboards, making under‑bath installations much easier for installers. Traditionally, installing traditional water-seal trap often means that you would need to cut into the floor to accommodate the bend in the fitting, however the waterless trap’s compact design removes the need for this extra work.
For installers, having HepVO in their toolkit means fewer blockages, fewer call‑backs and confidence that the system will perform as intended, even in rarely used spaces. For merchants, the product provides a reliable, easy‑to‑demonstrate solution that aligns with modern building standards and adds real value in everyday counter conversations.
Why product choice matters for merchants
As construction programmes tighten and space becomes harder to come by, installers are increasingly relying on merchants for guidance as well as supply. Stocking products that actively help installers work faster, reduce complications and avoid callbacks adds tangible value at branch level.
Waterless traps like HepVO give merchants a credible, modern alternative to traditional water‑seal traps – one that aligns with current design trends and installer expectations. By recommending compact, low maintenance solutions, merchants can strengthen customer loyalty while supporting better installation outcomes.
For more information on Wavin’s Osma HepVO waterless trap, visit: https://wavin.com/gb/s/C03_F012_S027/wavin-osma-hepo-self-sealing-waste-valve
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