Home Maintenance Myths That Cost Homeowners Time and Money

The bleach-on-mould approach is one of the most widespread home maintenance errors. On a tile or glass surface, bleach can be effective at removing visible mould. But on drywall, wood studs, or unsealed grout, it evaporates before reaching the root structure (called hyphae) embedded beneath the surface. The mould appears gone, then regrows, often more aggressively.

The correct approach involves identifying and eliminating the moisture source first — without that step, no surface treatment is permanent. Porous materials with deep mould penetration typically need to be removed and replaced. For large areas (generally over 10 square feet), the US Environmental Protection Agency recommends consulting a professional remediation contractor.

Asbestos was commonly used in ceiling texture compounds until it was largely phased out following regulations in the late 1970s. Homes built or renovated before 1980 should have popcorn ceiling material tested by a certified inspector before any scraping or removal begins. Disturbing asbestos-containing material releases airborne fibres that are a known health hazard.

If asbestos is confirmed, removal must follow state and federal regulations and is typically performed by a licensed abatement contractor. Even if a ceiling tests asbestos-free, the project still involves managing significant dust and may require a permit depending on your local jurisdiction. Check with your local building department before starting.

The running-water habit is useful but widely over-relied upon. Foods like pasta, rice, potato peels, celery, and coffee grounds are known to cause disposal clogs or motor strain even with water running. Grease and fats coat the interior of pipes and solidify downstream, causing blockages that water alone will not prevent.

The most effective approach is to avoid putting problematic materials in the disposal in the first place. Run cold water (not hot, which can liquefy grease and push it further into pipes before it resolidifies) before, during, and for a few seconds after grinding. When a clog does occur, avoid chemical drain cleaners in disposals — they can damage seals and blades.

Unlike toilet paper, which is designed to disintegrate rapidly in water, most wipes marketed as flushable retain their structure long enough to accumulate in drain pipes, catch on rough pipe joints, and combine with grease to form blockages. Plumbers and municipal sewer authorities across the US regularly cite these wipes as a major source of clog calls and sewer system maintenance costs.

The practical guidance: regardless of packaging claims, treat all wipes as non-flushable and dispose of them in a bin. If you've been flushing them for some time, it may be worth having a plumber inspect your drain lines, particularly in older homes with cast-iron pipes that have more interior roughness to catch debris.

HVAC systems degrade gradually. Dirty evaporator or condenser coils reduce efficiency significantly — the system works harder, uses more energy, and wears components faster — all without producing obvious symptoms early on. Refrigerant leaks, failing capacitors, and blocked condensate drains often build up over time and then cause sudden failures, typically during peak summer or winter demand when repair costs and wait times are highest.

Annual professional servicing — including coil cleaning, refrigerant level checks, electrical connection inspection, and filter replacement — is generally considered standard practice by HVAC professionals. It also preserves manufacturer warranties, which often require documented maintenance. See our guide to knowing when to call a pro for more on evaluating professional service needs.

Caulk contracts and expands with temperature cycling, typically becoming brittle or pulling away from surfaces within five to ten years. By the time a draught is noticeable, the seal has often failed enough to allow meaningful air and moisture infiltration. Water intrusion behind failed window caulk is a common cause of framing rot and interior wall moisture damage — problems that don't announce themselves until they're significant.

Annual inspection — especially before winter — lets you catch hairline separations and replace caulk proactively. Use paintable silicone or siliconized latex caulk rated for exterior use. If you want to go deeper on sealing strategy, our article on draught-proofing myths covers common sealing errors that actually raise energy bills.