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All our articles in the “Contractors” category.

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ContractorsJuly 17, 2026
Typical air leaks: hatches, sockets, duct penetrations

A poorly fitted loft hatch, an unsealed socket, a duct penetration left untreated. And you lose comfort, performance, and sometimes credibility on the job. With a few good installation and checking habits, you can track down these invisible leaks and deliver a clean, tidy renovation with no nasty surprises at the test.

5 min read

ContractorsJuly 16, 2026
Choosing the heat transfer fluid: glycol water vs pure water

On a job site, the right choice of fluid circulating through the pipes can be the difference between a stable installation and callbacks in the middle of winter. Between freeze risk, maintenance constraints and compatibility with the heat pump or solar collectors, you need a simple, clear decision. Here's the rundown, no jargon, to keep your installs and settings safe.

5 min read

ContractorsJuly 16, 2026
Acoustic Facade Insulation: Protecting Against Road Noise

When a client tells you that traffic noise "comes right into" the living room, they expect a simple, clear answer. Between acoustic bridges, worn-out windows, and forgotten joints, leaks often come down to details you can fix quickly, without an endless job. Starting from a good diagnosis and clean execution, you turn a noisy home into a pleasant room, and you secure your result.

5 min read

ContractorsJuly 16, 2026
Gas Boiler DHW: Instantaneous, Micro-Storage or Tank

With a gas boiler, hot-water comfort isn't just about power output, but about choosing the right production mode. Instantaneous, micro-storage or tank — each solution has its limits depending on the number of draw-off points, household habits and available space. As a tradesperson, you save time on your quotes by asking the right questions upfront.

5 min read

ContractorsJuly 15, 2026
Preventive maintenance of a solar thermal system

With hot water production, a breakdown never happens at a good time. With a simple inspection routine, you secure performance, avoid overheating, and extend the life of the tank, circulators, and collectors. As a tradesperson, a few checks well spaced out over the year often make the difference between a reliable system and repeat warranty callbacks.

5 min read

ContractorsJuly 15, 2026
Rodents and insulation: protecting the insulating materials

On site, damaged insulation quickly turns into an unhappy client and costly rework. By identifying entry points from the initial visit and choosing the right materials and protections, you secure performance over time, without loading up the quote. The result is a cleaner renovation, and insulation that actually holds up.

5 min read

ContractorsJuly 15, 2026
Variable-speed circulators: reducing auxiliary consumption

When a client complains about rising bills, the cause is sometimes hiding in a detail that runs continuously. As a tradesperson, you can quickly gain in comfort, quietness and consumption by finely adjusting water circulation to match actual needs. It's a simple intervention to explain and easy to sell on a quote.

5 min read

ContractorsJuly 14, 2026
Commissioning a balanced mechanical ventilation system: settings and balancing

A poorly adjusted balanced ventilation system can quickly generate more noise than comfort, and cost you time on after-sales callbacks. As a tradesperson, commissioning is your key moment: consistent flow rates room by room, a balance between supply and extraction, and well-controlled pressure to avoid whistling and condensation. With a simple method and clean measurements, you deliver an installation that breathes correctly, and a client who feels it from the very first hours.

5 min read

ContractorsJuly 14, 2026
Aluminium joinery with thermal break: performance and looks

On a job site, metal joinery often comes down to a few details that either earn DPE points or don't, without sacrificing the lines. With a good thermal break, you keep insulation performance at the frame and limit the cold spots that trigger complaints. And when the finish is clean, it's also easier to sell, easier to install, and easier to stand behind.

5 min read

ContractorsJuly 14, 2026
Sizing a solar water heater (CESI): collector area and storage volume

On a solar water heater, correct sizing makes the difference between an installation that runs well all year and one that overheats as soon as the sun comes out. As an installer, you're balancing collector area, the household's real needs and storage volume, to deliver stable comfort without overselling or compromising.

5 min read

ContractorsJuly 13, 2026
Heat pump manufacturer warranty: what's covered and what isn't

When a heat pump breaks down mid-project, it's not just a technical hiccup. It's lost time, a worried client, and sometimes a bill that lands on the wrong side of the ledger. To avoid unpleasant surprises, you need to know precisely what's covered, for how long, and what can be refused depending on maintenance, installation, or the parts involved.

5 min read

ContractorsJuly 13, 2026
Lifting pumps: when they're needed in renovation

In renovation, when wastewater drainage can't follow the slope or the discharge point is higher up, you need a reliable solution, not a workaround that comes back to haunt you in after-sales calls. Properly installed, it secures the job, prevents backflow, and saves you precious time on connections. What remains is knowing exactly when it's really needed, and how to size it without overspending.

5 min read

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