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How Sunlight and Heat Damage Plastic Oil Tanks — And When to Replace Yours

How Sunlight and Heat Affect Plastic Oil Tanks

Though Ireland isn’t known for scorching summers, even moderate UV exposure and warm weather can gradually damage your plastic oil tank. UV rays break down the polymer chains in the plastic, causing it to become brittle over time. Combined with internal pressure from heating oil, this makes tanks prone to splitting and deformation.

Plastic tanks installed in full sun, especially dark-coloured ones, absorb more heat. This accelerates surface deterioration and increases the chance of early failure.

When to Replace Your Oil Tank: Key Warning Signs

Here are clear signs it may be time to replace your oil tank:

  • Deformation – If the tank no longer holds its original shape, that’s a red flag.
  • Oil smell – Strong odour near the tank could indicate minor leaks or venting problems.
  • Faded colour – A pale or chalky top means UV damage is underway.
  • Hairline cracks – Look closely for fine surface cracks, especially near seams and the top.
  • Spots of moisture or staining under the tank – This may point to seepage.

If you notice any of these, don’t wait — your tank could fail when you least expect it.

What Can Happen If You Delay?

Old or damaged tanks are not just unsightly — they’re risky. Here’s what you could be facing:

  • Oil leaks into the soil — Environmental fines and cleanup costs.
  • Loss of fuel — Heating interruptions in cold weather.
  • Fire risk — Escaping vapours can ignite.
  • Insurance issues — Many insurers won’t cover damage caused by neglected tanks.

That’s why Oil Tank Replacement Ltd. exists — to help you avoid all that hassle.

Our Oil Tank Replacement Process: Safe, Efficient, All-Inclusive

Here’s how we do it:

1. Safe Oil Tank Removal

We transfer usable oil into clean containers and safely contain any residue or sludge in disposal units. Your old tank and waste go with us — oil tank removal is included in your quote, so there are no hidden charges.

2. Solid Base Preparation

We assess and, if needed, modify your tank base to ensure proper support and maximum lifespan of your new oil tank. Learn more here: Tank Base Preparation

3. Install New Tank & Connect Heating

We’ll install your new oil tank, update the fuel line if required, and test your heating system to confirm it runs smoothly. View our tank options here: New Oil Tanks

No mess, no leaks, no stress. Most replacements take about 2 hours.

Ready to Replace Your Oil Tank?

Don’t risk a leak or system failure — call Brian on 086 806 8776 today or visit oiltankreplacement.ie to learn more.


We serve all of Leinster and handle everything — whether you need to replace your oil tank, move an oil tank, or plan a full oil tank relocation.
2025-06-23 19:06 Knowledge base