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Edges & Fabrication

How Thick Are Marble Countertops? Choosing the Right Thickness

Marble is available in several thicknesses, and choosing the right one affects strength, appearance, installation and budget. Using a slab that is too thin can lead to cracks; using one that is too thick wastes money and adds unnecessary weight. Here is a practical guide.

By FB Marble & Granite, Lahore··2 min read
Marble wall cladding design, Pakistan
Marble wall cladding design, Pakistan

Common Marble Thicknesses

1 cm (about 10 mm)

Sunny White Marble slab from FB Marble Lahore, suited to 2 cm marble vanity
Sunny White Marble from our stock in Lahore. Ideal for: 2 cm marble vanity.
Chocolate Brown Marble slab from FB Marble Lahore, suited to 3 cm marble stair tread
Chocolate Brown Marble from our stock in Lahore. Ideal for: 3 cm marble stair tread.

Used for wall cladding, backsplashes, shower walls and some tiles. It must be fully supported or bonded to a solid wall. It is lightweight and economical but not suitable for unsupported counters.

2 cm (18–20 mm)

The most common thickness in Pakistan. It is used for floors, vanity tops, kitchen counters on full cabinets, window sills and stair risers. It offers a good balance of strength, weight and cost.

3 cm (30 mm)

Used for stair treads, door thresholds, heavy-use counters, table tops and statement islands. It looks substantial and handles overhangs better.

4 cm and above

Reserved for custom work such as solid table tops, carved pieces, columns and outdoor benches.

Thin vs Thick: How They Compare

Durability. Thicker slabs resist cracking over spans and around cut-outs. Thinner slabs rely on solid support beneath.

Appearance. A thick edge looks luxurious. However, you can achieve the same look on a 2 cm slab with a built-up or mitered edge.

Weight. A 3 cm slab is roughly 50% heavier than a 2 cm slab. Consider cabinet strength, upper-floor access and wall loads.

Cost. More stone means a higher price per square foot, plus more labour to handle and fabricate.

UseRecommended
Floors18–20 mm
Stair treads30 mm
Stair risers18–20 mm
Vanity tops18–20 mm
Kitchen counters18–20 mm on full support
Wall cladding10–18 mm
Table tops20–30 mm

Does Marble Need to Be Thicker than Granite?

Marble is softer than granite, so it benefits from good support, especially around sink cut-outs. For most vanities and counters, 18–20 mm marble on a solid base is perfectly adequate. For long spans or overhangs, add plywood or steel supports.

Talk to FB Marble

FB Marble & Granite has supplied and installed natural stone across Pakistan since 2001. Visit our showroom at 51 Y Jamun, Bedian Road, near the DHA Phase 5-6 Interchange, Lahore, or WhatsApp +92 323 4148908 with your measurements for a free quote. Browse our granite, marble, quartz, porcelain and onyx collections on fbmarble.com.

Frequently asked questions

Can thin marble be used on floors?

With a proper mortar bed it is possible, but 18–20 mm is safer for durability.

Does thicker marble cost much more?

Yes, roughly in proportion to the extra stone.

What thicknesses does FB Marble stock?

Mostly 18–20 mm, with thicker sizes available on request.

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Want to see these stones in person?

Visit our showroom at Bedian Road, DHA Phase 6, Lahore, ask for free samples, or send us your measurements for a quote.

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