How Are Quartz and Stone Worktops Templated and Fitted?

Quick Answer: Quartz and stone worktops are templated on site (paper, MDF or laser templater) after cabinets are fully installed and level, fabricated in a stone yard with CNC saw and water jet, and lifted into position typically by 2–3 fabricators. Worktops are bedded on units in silicone, with joints sealed in colour-matched epoxy (typically Akemi or Tenax). Heat protection is required for hob and sink cut-outs to BS EN 14617 for quartz and BS EN 12058 for natural stone. HSE COSHH rules apply to dry cutting — engineered quartz contains up to 90% silica and must be cut wet with FFP3 RPE.

Summary

Stone-class worktops (granite, marble, quartz composite, sintered stone) are templated, fabricated and installed by specialist stone yards. The kitchen fitter's role is preparation, the stone yard's role is delivery. Understanding the handoff prevents disputes about who is responsible for delays, cut-out positions and final fit.

The templating moment is the single highest-value 60 minutes of the kitchen project. After templating, no cabinet can move, no sink can change, no hob model can swap, and no socket can shift — every dimension is fixed in the stone. Customer sign-off at templating stage is essential.

Once fabricated (typically 5–14 days from template), the slabs arrive on a fitted lorry, are carried in, lifted onto the cabinets, joints and silicone are completed, and the install is done in 4–8 hours for a typical 4–6m run kitchen.

Key Facts

Quick Reference Table

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Material Joint Visibility Cutout Type Heat Tolerance Install Care
Quartz (Silestone, Caesarstone) Slight CNC dry edges 150°C Standard care
Granite Slight Cut + polish edge 200°C+ Seal annually
Marble Slight Cut + polish 200°C+ Etches with acid
Sintered (Dekton) Slight Diamond wet cut 300°C+ Extreme care during lift — can crack
Solid surface (Corian) Invisible Thermo + seam 100°C Seamed in workshop or on site

Detailed Guidance

Pre-template requirements

Before the templater arrives, the kitchen fitter must complete:

Template Day Readiness Checklist
□ All base cabinets installed and FIXED in place
□ Top of all units level to ±2mm across whole run
□ End panels and decor sides in place
□ Wall cabinets installed (so heights and breaks are visible)
□ Plumbing rough-in complete — sink type confirmed
□ Hob model confirmed and on site (or template available)
□ Electrical rough-in complete (sockets in correct locations)
□ Splashback type confirmed (separate splash, integrated upstand, full slab)
□ Edge profile chosen
□ Joint locations agreed
□ Customer present for sign-off

Templating methods

Three main methods used by UK stone yards:

The templater records:

Joint planning

A typical 4-metre kitchen run usually involves 1–2 joints, because slab sizes are usually 3.0–3.2m and corners need to be cut. Joint planning rules:

Lifting and craneage

A 2400 × 700 × 30mm quartz slab weighs around 110 kg. Standard practice:

Risk-assess for the lift. CDM 2015 manual handling rules apply. Slabs are dropped occasionally — replacement piece is a fortnight's delay and a difficult conversation.

Bedding and securing

Worktops are bedded on cabinets with silicone, not glued solid. Why:

Procedure:

  1. Vacuum the cabinet tops — any grit causes the slab to sit unevenly
  2. Lay 10mm beads of neutral-cure silicone across cabinet tops, every 200–300mm
  3. Lift slab into position with suction lifters
  4. Press down evenly — silicone holds the slab securely once cured
  5. Check level across the slab; pack any low spots with thin shim before silicone cures

Joints between slabs

Joints are made with colour-matched epoxy adhesive:

The joint is visible on close inspection — claim "invisible joints" only if the slab pattern is uniform (concrete look, plain white). On heavily veined slabs (marble look, calacatta) the joint shows as a thin line because the veining doesn't quite continue.

Sink and hob cutouts

Sink cutout:

Hob cutout:

Edge profiles

Standard profiles:

Profile Description Cost vs Square Edge
Square arris 90° edge slightly eased Standard
Pencil round Quarter-round at top +5–10%
Bevel (20° chamfer) Top edge cut at angle +5%
Bullnose Full half-round +15%
Mitred apron 80mm Folded edge appearing 80mm thick +50% (extra slab)
Mitred apron 100mm Same, 100mm appearance +60%
Waterfall end panel Slab continues down the cabinet side +100% (full slab side)

Mitred edges are 45° glued joints — the visible joint sits at the top corner. Quality of mitred edges is the test of a good stone yard.

Sealing — natural stone

Granite, marble, slate, limestone all benefit from impregnator sealer:

Silica safety

Engineered quartz contains up to 90% crystalline silica. Dry cutting on site is prohibited under HSE COSHH guidance and the General Duty under HSWA 1974:

Australia banned engineered stone in 2024 after a wave of silicosis cases in fabricators. UK regulators (HSE) have increased scrutiny — site cutting of quartz is increasingly considered an unacceptable risk.

Customer handover

Walk the customer through:

Frequently Asked Questions

Why can't I just buy a slab and have my kitchen fitter install it?

The fabrication (cutting, polishing edges, drilling for sink/hob, water-jet cutouts) requires specialist equipment — CNC saws, water-jet, diamond polishing. Stone yards have £150k+ of plant. The fitter and customer pay the yard to do the fabrication; the fitter prepares the units and may help on install day.

Can I change my mind about the hob or sink after templating?

Only if you accept a delay — the stone yard recuts the cutout (sometimes possible) or remakes the affected section (typically £400–£1500 depending on slab consumed). Late changes are the most common cause of stone job overruns. Sign off the template carefully.

What's the lead time from template to fit?

5–14 working days is typical UK lead time for quartz and granite. Premium quartz colours (sourced from Spain or Israel) and sintered stone can be 3–6 weeks. Confirm lead time before scheduling the rest of the kitchen.

Does the worktop expand with heat?

Yes, very slightly. Quartz expands ~25 × 10⁻⁶ /°C; granite similar. Across a 4m run, a 30°C temperature swing gives ~3mm of expansion. This is why worktops are bedded on silicone (allowing movement), and why the joint between worktop and wall is finished in silicone, never grouted.

Can I have a quartz worktop with an integrated drainer?

Yes — drainer grooves are cut into the surface during fabrication with a CNC router, then polished. Cost is typically +£100–£200 per drainer. Limited to specific quartz brands; check at design stage.

Regulations & Standards