Insulation is the best investment you can make when it comes to improving your home or office’s energy efficiency. But factors like moisture, vermin, compression, and dirt all play their part in reducing its effectiveness. If you’re wondering how long your insulation will last, then keep reading; we’ve created a helpful guide to answer all your questions.

How long can I expect insulation to last?  

If you install insulation using a reputable insulation provider, you should expect insulation to last at least several decades. Most of today’s insulation products have a warranty of around 50 years. However, it’s more likely you’re living in a home that was insulated by a previous owner. If you’re in this situation, we recommend you get a professional to check for signs of wear and tear.

Quick tip: If you live in the Perth area feel free to get in contact as we’re happy to offer free advice and a quote if needed.

7 factors that affect how long your insulation lasts

  1. Moisture: Condensation and leaks in the roof can cause water to compromise your insulation. Not only will they cause your insulation to slump, but mould issues can also arise.
  2. Infestations: Mice, rats, termites, and other pests can wreak havoc with insulation. They can chew their way through or cause tears that affect the R-value [link to R-value post].
  3. Damage: Over the years physical damage can result in several ways. A common reason is renovations or repair work that require tradies to work around insulated areas.
  4. Dirt: Over time, dirt and dust can accumulate on top of the insulation. Foil-coated insulation is especially affected by this – dirt reduces its ability to reflect heat.
  5. Movement: When batts and loose-fill insulation are used, this will lead to unwanted movement and settling. This will allow air draughts and heavily impact the thermal efficiency of the space.
  6. Shoddy workmanship: Whether the insulation was installed by a not-so-handy home renovator or an unprofessional supplier, it will impact the insulation’s life.
  7. Severe events: A fire may not destroy your house, but it can still damage insulation. If you’ve been unfortunate enough to have been impacted by fire, be sure to get it checked out.

When should I replace my insulation?

It’s time to replace the insulation when you begin to experience temperature fluctuations and the energy bill is increasing for no apparent reason. Of course, if there are visible signs of damage to your insulation, such as tears, mould, or infestations, you should look to replace it.

Should I replace my insulation or top it up?

If your insulation is visibly damaged or mouldy, then tear it out and replace it with new product. However, if the insulation is still in good condition, but is getting old, you may be able to keep it in place and top it up.

Do some insulation types last longer than others?

If you’re looking for durable, long-lasting insulation then spray foam insulation is an excellent option. It stays in place much better than other products like batts and isn’t as susceptible to moisture, mould, and pests.

Summing up

Insulation won’t last forever – there is a range of factors that cause it to lose its insulating properties. Are your home or workplace power bills increasing for no reason? Maybe you’re noticing the weather extremes more than you used to? They’re signs that your insulation may need to be replaced. If you decide to get new insulation installed, then we’d be happy to assist. Contact us today for a no-obligation quote.