How to avoid common flooring installation mistakes

Freshly laid carpet or timber flooring may be the first thing a client sees and feels – but there’s more to a polished finish than the covering alone.

“The floor may be the hero, but it’s the floor preparation and installation products that make it perform,” Amanda Janin of flooring and home improvement supplier QEP Australasia says. “Choosing the right underlay, adhesive and finishing accessories ensures a floor not only looks great but performs exactly as it was designed to.”

Done well, flooring installation using the right materials – from underlay to flooring adhesives and the right floor trims – creates a more impressive and durable result. But if these flooring accessories are left as an afterthought, they can cause premature wear and flooring failures (and, in some cases, a costly callback).

What are the most common flooring installation mistakes?

The most common flooring installation mistakes can include:

• Skipping expansion gaps
• Using the wrong underlay
• Ignoring subfloor moisture
• Choosing an incompatible adhesive
• Poorly installing trims and transitions
• Failing to follow manufacturer instructions

At a glance: End-to-end flooring installation tips to avoid callbacks

• Why the right underlay matters in flooring installation: Underlay impacts insulation, comfort and a floor’s long-term performance.
• How to choose the right flooring adhesive: Compatible flooring adhesive helps prevent movement and flooring failures.
• When to use floor trims and transition trims: Ensure a long-lasting, seamless result between surfaces and rooms.
• How flooring accessories improve finish quality and reduce callbacks: Using the right accessories can reduce callbacks and help protect your reputation.

Tip: Always wear the appropriate safety equipment (safety glasses, gloves and a mask, for example) when required on the job. Always follow the instructions for the product or equipment.

Why the right underlay matters in flooring installation

Underlay is a bit of an unsung hero when it comes to flooring upgrades. Even though clients can’t see it, it plays an important role in how the finished floor feels and performs over time.

The right underlay helps improve acoustic performance, comfort underfoot, insulation and moisture protection. The wrong underlay for the flooring system can lead to premature wear, poor floor performance and warranty issues.

An underlay that’s compatible with the flooring system and subfloor can help avoid these issues and support the manufacturer’s installation requirements.

Choosing the right flooring adhesive

For flooring types that require adhesive, picking one compatible with the flooring type is essential. It can help prevent issues like cupping, curling, discolouration, lifting and structural movement, which may lead to a callback or even a complete redo. It can also help support the floor’s long-term performance.

When to use floor trims and transitions

Floor trims and transitions take up a relatively small area, but they can make the difference between an ordinary and outstanding result.

Clients often notice them fairly quickly, and clean edges and neat transitions are signs that the rest of the job has been done to a high standard.

Amanda says different trims serve different purposes depending on the project. Scotia trims neatly cover expansion gaps where flooring meets skirting boards or walls, while transition trims create a safe and professional transition between different flooring surfaces.

On larger installations, expansion trims are used within the floor itself to accommodate expansion and contraction over larger spans.

How to reduce flooring callbacks

Many flooring issues come back to incorrect installation rather than the flooring product itself, Amanda says. She notes that inadequate perimeter expansion gaps, the wrong underlay or adhesive, and poorly installed transitions and trims are among the most common causes of movement, lifting and edge damage.

“Getting these details right from the start gives your floor the best chance of performing exactly as it was designed to,” she says.

Flooring installation accessories that affect performance

While quality flooring accessories are an up-front investment, they provide a more complete finish and pay off in the long run.

“A tradie’s reputation is built one job at a time. That’s why experienced installers rely on quality products they trust, supported by clear installation instructions, dependable technical support and warranties they can rely on,” Amanda says.

She adds that the right products – used according to the manufacturer’s instructions – create a more professional result, reducing the risk of callbacks and helping tradies protect their hard-earned reputation.

Tip: Talk to a Bunnings Trade Specialist for tips and support on flooring materials and finishing products that support a better install. Call 134 TRADE to confirm stock at your local store, and use Click & Deliver to keep flooring projects moving.

Frequently Asked Questions: Flooring installation

Q: What details are clients most likely to notice after handover?
A: Trims and transitions are often the first things clients notice, especially trip hazards caused by poor transitions and unevenness between different flooring types. They might also detect hollow or bouncy areas where the underlay isn’t performing as intended or the adhesive has failed.

Q: How do I know which flooring accessories to buy?
A: The right accessories depend on the flooring system you’re installing and the manufacturer’s flooring installation requirements. Accessories should be selected to suit the flooring type, subfloor and application.

Q: Can the wrong accessories void a manufacturer’s warranty?
A: Yes. Manufacturers generally require certain accessories to ensure the floor performs correctly. If failure is due to using the wrong ones, they may reject a warranty claim. Always follow the manufacturer’s instructions and recommendations to maintain warranty coverage.

Q: How can tradies explain the value of accessories to clients?
A: Explain that these accessories affect not only the enjoyment of their floor but its performance, too. They’ll notice a floor that’s more comfortable underfoot, looks more professionally finished and is built to perform long term.

Q: Do you install flooring or the trims first during flooring installation?
Flooring first. This allows the surface floors to expand and contract under the baseboards before the trim goes on. Think of the trims as your end game – the final finishing touches that let the client know you’ve done a quality, professional job on their flooring installation.

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