Lindab guttering

Short answer:
Yes, Lindab gutters can dent — but not in the way most people worry about.
Small dents are normal and usually cosmetic. Structural dents that affect performance are rare and almost always caused by poor handling or impact, not normal use.

This guide explains the difference, so you know what to ignore, what to fix, and what shouldn’t happen at all.

 

First: why this question comes up at all

Lindab gutters are made from coated steel, not plastic. That’s a good thing for strength and longevity — but steel behaves differently.

Plastic flexes and springs back.
Steel holds its shape.

That means:

  • it won’t warp in heat

  • it won’t sag easily

  • but if it’s hit hard enough, it can dent

That’s not a defect. It’s just how steel works.

 

What dents are normal (and not a problem)

Minor dents from handling or installation

Small, shallow dents can happen during:

  • transport

  • lifting long lengths

  • manoeuvring sections into place

  • knocking against ladders or scaffolding

If the dent:

  • doesn’t affect the fall

  • doesn’t distort the joint

  • doesn’t stop water flowing

…it’s purely cosmetic.

Most people only notice these when standing directly underneath. From the ground or street, they’re usually invisible — especially on darker colours.

Tiny ripples near brackets

Occasionally you’ll see very slight deformation close to bracket points. This is usually just where the gutter is being supported and is not a failure.

As long as:

  • brackets are correctly spaced

  • the gutter isn’t sagging between them

this is normal behaviour, not damage.

 

What dents are a problem

This is where the line is.

Dents that change the gutter’s shape

If a dent:

  • creates a low spot where water sits

  • disrupts the fall

  • causes water to pool instead of drain

that’s no longer cosmetic. Standing water leads to grime build-up and long-term issues.

 

Dents at joints or outlets

Any dent that:

  • distorts a joint

  • affects how sections meet

  • pulls stress into an outlet

is a problem. These areas rely on clean alignment. Damage here can cause slow leaks or premature wear.

 

Sharp creases from impact

If something heavy has hit the gutter — a ladder fall, scaffold pole, branch, or roof tile — and left a sharp crease, that section is usually best replaced.

Steel doesn’t “bounce back” once it’s creased.

 

Do Lindab gutters dent easily compared to other systems?

Compared to uPVC:
Yes, steel dents more easily than plastic - but plastic scratches, warps, fades and becomes brittle over time.

Compared to aluminium guttering:
They’re similar. Aluminium dents too, sometimes more visibly, especially on thinner systems.

Compared to cast iron guttering:
Cast iron doesn’t dent — it cracks. Different problem, different risk.

Steel sits in the middle: strong, stable, but honest about impact.

How to minimise dents (practical advice)

Most dent complaints come from handling, not weather.

  • Carry long lengths with two people

  • Support the gutter along its length when lifting

  • Don’t rest steel gutters across uneven scaffolding bars

  • Avoid levering sections into place — align first, then fix

  • Touch up any exposed steel if the coating is damaged

Installed properly, Lindab gutters don’t slowly “pick up dents” over time.

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