The right toilet seat is more than a detail – it’s a daily comfort. And for many Irish homeowners, the main challenge is finding one that actually fits the bowl. Whether you’re upgrading to soft-close or just replacing a worn plastic seat, this is one DIY task that takes little more than a tape measure and a screwdriver.

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Standard toilet seat length: 14–16 inches (round) or 18–19 inches (elongated) ·
Average retail price: $15 to $200 depending on material and features ·
Expected lifespan: 5 to 10 years with normal use ·
DIY installation time: 15 to 30 minutes ·
Typical plumber cost to install: $50 to $150 for seat replacement

Quick snapshot

1Types of Toilet Seats
2Sizing & Fit
  • How to measure your toilet – Lowe’s measuring guide
  • Bolt hole spacing (Lowe’s measuring guide)
  • Universal vs custom-fit (Lowe’s measuring guide)
3Installation
4Where to Buy in Ireland

Key facts about toilet seat dimensions and materials reveal clear differences between standard models.

Key facts about toilet seats
Attribute Typical Value
Standard toilet seat width Typically 14–16 inches round, 18–19 inches elongated – Lowe’s
Common material Plastic (polypropylene), wood, or composite
Soft-close hinge mechanism Uses a fluid damper to slow descent – Plumbworld
Average price range $15–$40 basic, $30–$100 soft-close, $100+ wood/designer

Do all toilet seats fit any toilet?

Why toilet seat shape matters

  • Toilet seats come in two main bowl shapes: round and elongated. Lowe’s buying guide
  • Round seats are shorter, designed to match round bowls; elongated seats are oval and longer. Lowe’s

Size differences between round and elongated

Round bowls typically measure about 16.5 inches from the mounting holes to the front edge, while elongated bowls are 18–19 inches. YouTube DIY guide

Bolt hole spacing and seat compatibility

The distance between the two fixing holes is often a standard 155 mm, but it should always be verified. Plumbworld plumbing specialist Seats are generally not universal – you must match the shape, size, and bolt pattern of your specific bowl.

Bottom line: Irish homeowners should measure before buying. A round bowl needs a round seat, an elongated bowl an elongated one – guessing leads to returns.

How do I know which toilet seat will fit my toilet?

Measuring your toilet bowl

  • Measure from the center of the mounting holes to the front rim of the bowl – that gives you the length. Lowe’s
  • Also measure the width at the widest point. B&Q home improvement guide

Determining shape: round or elongated

The simplest method: compare the length measurement. If it’s around 16–17 inches, the bowl is round; 18–19 inches means elongated. Lowe’s Some manufacturers offer a cardboard template – trace the bowl or use a known reference point.

Checking hinge spacing and mounting hole type

Most toilets have a 5.5-inch (155 mm) center-to-center distance between the mounting holes. Bunnings hardware guide However, some European or older models may differ. Always check the screw distance listed on the product page – Dunnes Stores includes this detail. Dunnes Stores

Bottom line: The tapemeasure is your best friend. A five-minute measurement saves a round trip to the store and ensures the replacement fits first time.

What are the three types of toilet seats?

Standard plastic seats

  • Lightweight, easy to clean, and affordable – typically €15–€40. Dunnes Stores
  • Made from polypropylene, resistant to moisture and stains.

Wooden and painted wooden seats

  • Offer a warmer feel and a more substantial look.
  • Require proper sealing to prevent water damage – not ideal in bathrooms with high humidity unless finished well.

Soft-close and luxury seats

  • Use a fluid damper to prevent slamming – a feature growing in popularity in Irish homes.
  • Woodie’s sells a model with a built-in potty training seat and slow-close lid in both round and elongated sizes. Woodie’s Ireland
Why this matters

Homeowners upgrading from a standard plastic seat to a soft-close model eliminate one of the most common household annoyances – and for around €30–€60 it’s a low-cost way to improve daily life.

Can I replace a toilet seat myself?

Tools needed for replacement

  • A screwdriver (flathead or Phillips, depending on bolt heads).
  • An adjustable wrench or pliers for stubborn nuts. Plumbworld
  • A tape measure (to confirm fit before buying).

Step-by-step installation guide

  1. Remove the old seat: unscrew the nuts under the bowl (use pliers if rusted). Plumbworld
  2. Clean the mounting area thoroughly.
  3. Align the new seat over the holes and slide the bolts through.
  4. Tighten the wingnuts from below – but don’t overtighten. Plumbworld
  5. Close the seat to check alignment and adjust if needed. Woodie’s YouTube tutorial

When to call a plumber

  • If the bolts are rusted and won’t budge.
  • If the toilet bowl is cracked or damaged during removal.
  • Expect to pay €50–€150 for professional installation. B&Q
The catch

A wobbly seat after installation usually means the bolts weren’t tightened evenly – check the underside and adjust. It’s the most common DIY mistake, but it’s easily fixed.

Do Dunnes sell toilet seats?

Dunnes Stores toilet seat product range

Dunnes carries a limited selection, including a soft-close white seat for €15 with dimensions H44×W37×D4 cm. Dunnes Stores The listing includes screw distance info, indicating fit matters – but the range is modest compared to specialists.

Woodie’s toilet seat selection

Woodie’s offers over 50 models in round and elongated sizes, including slow-close options and a model with a built-in potty training seat. Woodie’s Ireland

Other Irish retailers (Home Store + More, Tilestyle, Big Bathroom Shop)

  • Home Store + More and Tilestyle provide broader online ranges with detailed dimensions and customer reviews.
  • Big Bathroom Shop offers free delivery on most orders and a price-match guarantee.
  • Online specialist retailers often have better stock depth than large high-street stores.

Three Irish retailers, one clear pattern: big-box stores like Dunnes and Woodie’s offer convenience, but online specialists give more choice and often better pricing on premium seats.

Bottom line: For a quick budget replacement, Dunnes is fine. For variety, soft-close options, or specialty sizes, Irish homeowners should head to Woodie’s or an online bathroom retailer.

Upsides & Downsides of Common Toilet Seat Types

Upsides

  • Plastic seats are cheap, easy to clean, and widely available.
  • Soft-close seats eliminate noise and damage from slamming.
  • Wooden seats feel warmer and more comfortable in cold weather.
  • DIY replacement takes under 30 minutes with basic tools.

Downsides

  • Cheap plastic seats can crack or discolour within a few years.
  • Wooden seats need sealing – moisture can cause warping.
  • Soft-close hinges can fail if overtightened or abused.
  • Non-standard toilet sizes (e.g., compact or wall-hung) require specialist seats.

Confirmed Facts & What Remains Unclear

Confirmed facts

  • Toilet seats come in two main shapes: round and elongated. Lowe’s
  • Bolt hole spacing is generally 5.5 inches (155 mm). Bunnings
  • You can replace a toilet seat without a plumber using a screwdriver and wrench. Plumbworld
  • Dunnes sells a soft-close seat for €15. Dunnes Stores

What’s unclear

  • Exact stock availability of toilet seats at Dunnes Stores may vary by location.
  • Long-term durability of budget plastic seats vs premium wood is debated.

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Additional sources

youtube.com, thediyplaybook.com, youtube.com, youtube.com

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Frequently Asked Questions

What is a soft-close toilet seat and is it worth it?

A soft-close seat uses a fluid damper in the hinge to slow the seat’s descent, preventing slamming. For Irish homeowners, the upgrade from a standard seat costs roughly €30–€60 and eliminates a common household noise.

How do I clean a toilet seat safely?

Use a mild detergent and a soft cloth. Avoid abrasive cleaners or bleach on wooden seats as they can damage the finish. Plastic seats can be cleaned with standard bathroom cleaners.

Can I paint a wooden toilet seat?

Yes, but the seat must be sanded and primed properly. Use a paint designed for high-moisture environments. The finish will need reapplication over time as the paint wears.

How do I remove a stuck toilet seat bolt?

If a bolt is rusted, apply penetrating oil like WD-40 and let it sit for 10 minutes. Use a pair of locking pliers to grip the bolt head while turning the nut from below. If the bolt snaps, you may need a bolt extractor kit.

Is it normal for a toilet seat to wobble after installation?

No. A wobbly seat usually means the bolts were not tightened evenly. Check the underside and tighten both sides alternately. If the problem persists, the bolt holes may be stripped or the seat is incompatible.