Countertops and Window Sills of Natural Stone and Porcelain Stoneware: Fabrication and Installation
Stone countertops: the functional luxury of your interior
A countertop is a work surface that every day withstands significant loads: cutting, impacts, high temperatures, contact with moisture and chemicals. At the same time a countertop is an important design element that defines the character of the whole room. Natural stone and large-format porcelain stoneware perfectly combine practicality with unrivalled aesthetics.
M-STONE is an expert in making and installing countertops and window sills of marble, travertine, onyx and porcelain stoneware in Kyiv and Ukraine. We create products that serve for decades, keeping their beauty and functionality.
Where stone countertops are used
Kitchen countertops
Work surfaces The main food-preparation area with the maximum load:
- Cutting food
- Contact with hot cookware
- Splashes of water, grease, sauces
- The effect of acids (lemon, vinegar)
- Mechanical impacts
Islands The central element of spacious kitchens:
- A work zone + a dining zone
- Visible from all sides
- The possibility of built-in appliances
- Often the largest surface in a kitchen
Bar counters
- A zone for quick snacks
- A visible edge (needs finishing)
- The possibility of lighting (onyx)
- Integration with kitchen furniture or a separate structure
Bathroom countertops
Under a washbasin
- Constant contact with water
- Splashes of soap and cosmetics
- A built-in or countertop sink
- The possibility of lighting
Vanity tables
- Less load than in the kitchen
- An emphasis on aesthetics
- Contact with cosmetics
Countertops for furniture
Coffee tables
- A decorative function
- Minimal load
- The possibility of exclusive materials (onyx)
Console tables
- For lobbies and hallways
- A decorative accent
- Combination with mirrors
Desks
- A work surface
- Contact with paper and stationery
- Long periods spent at the desk
Cabinets and chests of drawers
- A top made of stone
- Protection from scratches
- Raising the status of the furniture
Window sills
Functions of a window sill
- Finishing the window opening
- A place for pots and decor
- The possibility of use as a table (wide window sills)
- A seating area (very wide window sills)
Features
- Contact with condensation
- Solar radiation
- Temperature swings by the window
Materials for countertops and window sills
Natural marble
Advantages
- Unrivalled natural beauty
- A unique pattern on every slab
- A cool surface (ideal for working with dough)
- Prestige and status
- The possibility of restoration
Features of use
- Sensitivity to acids (lemon, vinegar and wine leave stains)
- Porosity (needs a water-repellent treatment)
- Softness (scratches are possible)
- Regular care
Popular varieties for countertops
- Bianco Carrara: a classic white, universal
- Calacatta: a premium one with expressive veins
- Statuario: the whitest, the most expensive
- Crema Marfil: a warm beige
- Emperador: a rich brown
- Nero Marquina: an elegant black
M-STONE recommendation: marble in a kitchen is a conscious choice of beauty over practicality. If you are ready for special care and accept the “patina of time” as part of the character, marble will give you unrivalled aesthetics.
Natural travertine
Advantages
- A warm natural look
- A unique texture with characteristic pores
- An antique character
- A pleasant tactile feel
Features
- Porosity (filling or protection is mandatory)
- Sensitivity to acids
- The need for a water-repellent treatment
Application
- Countertops for bathrooms
- Window sills
- Furniture tops
- Kitchens (if you are ready for special care)
Natural onyx
Advantages
- Translucency when backlit
- Unique beauty
- Exclusivity
- A magical glow effect
Features
- The most demanding to care for
- The highest price
- Fragility
- Sensitivity to acids and mechanical impact
Application
- Bar counters with backlighting
- Bathroom countertops with LED lighting
- Decorative elements
- Exclusive projects
Large-format porcelain stoneware
Advantages
- High scratch resistance (hardness 8-9 on the Mohs scale)
- Zero water absorption
- Resistance to acids and alkalis
- Heat resistance
- A wide choice of designs (imitation of marble, concrete, wood)
- Hygiene
- Ease of care
- A more affordable price compared with natural stone
Popular formats
- 120×60 cm: for small countertops
- 160×80 cm: for medium countertops
- 320×160 cm: for large surfaces without joints
Thickness
- 6 mm: for furniture facades and light structures
- 12 mm: the standard for countertops
- 20 mm: for a massive look
Popular designs
- Calacatta, Statuario, Carrara: imitation of white marble
- Emperador, Noir: imitation of dark marble
- Pietra Grey: a grey stone
- Concrete: an industrial style
- Monochrome: minimalism
M-STONE recommendation: porcelain stoneware is the optimal choice for those who want the beauty of marble without its care requirements. Modern technology makes the imitation almost indistinguishable from the original.
Quartz agglomerate (artificial stone)
Advantages
- High strength and wear resistance
- Non-porosity
- A wide colour palette
- Stable characteristics
Features
- An artificial material
- Limited heat resistance (up to 150°C)
- Can fade in the sun
Popular brands
- Caesarstone
- Silestone
- Quartzforms
The technology of making countertops by M-STONE
Stage 1: measuring and design
A measurer’s visit
- Exact measurements of the space
- Determining the configuration of the countertop
- The position of the sink, hob and mixer
- Taking into account wall thickness and unevenness
Design
- A scale drawing of the countertop
- Determining joints (if needed)
- Planning cutouts
- Choosing the edge finishing
- 3D visualisation (on request)
Stage 2: choosing the material
For natural stone
- The client visits the warehouse to choose a particular slab
- Selecting slabs by pattern and colour
- Checking the quality of the material
- Planning the optimal cutting layout
For porcelain stoneware
- Choosing a collection and colour
- Selecting slabs from one batch
- Checking the calibre and shade
Stage 3: production
Cutting
- CNC machines with numerical programme control
- Water cooling for a clean cut
- Accuracy up to 0.5 mm
Finishing the edges
- A straight finish: a modern minimalist look
- A chamfer: a bevelled edge, the classic option
- Half bullnose: a soft rounded edge
- Full bullnose: fully rounded
- Shaped: decorative profiles for classic interiors
Cutouts
- For a sink (countertop or inset)
- For a hob
- For a mixer
- For a soap dispenser
- For sockets (in the backsplash)
Polishing
- Achieving the desired level of gloss
- From matt to mirror
- Finishing the edges and cutouts
Reinforcement
- Reinforcing the back side (for thin slabs)
- Strengthening the zones around cutouts
- Installing embedded elements for fixing
Stage 4: installation
Preparation
- Checking that the furniture is ready
- Control measurements
- Preparing the fixings
Transport
- Special frames for transporting
- A team of experienced movers
- Cargo insurance
Installation
- Positioning the countertop
- Levelling
- Fixing to the furniture carcasses
- Bonding the joints (if any)
- Sealing the junctions
Finishing work
- Installing the sink
- Connecting the mixer (by agreement)
- Cleaning and checking
- Instruction on care
Specifics of countertops for different rooms
Kitchen countertops
Configurations
- Straight: along one wall
- L-shaped: two walls
- U-shaped: three walls
- Island: a separate structure
- Combined: a work zone + an island
Standard parameters
- Depth: 60-65 cm
- Thickness: 20-40 mm
- Height from the floor: 85-90 cm
Additional elements
- An integrated sink (of the same material)
- A built-in chopping board
- Drainage grooves
- Openings for a waste bin
The backsplash (a wall panel)
- A continuation of the countertop up the wall
- Height 5-15 cm
- Protecting the wall from splashes
Bathroom countertops
Features
- Less depth (45-55 cm)
- A cutout for a built-in or countertop sink
- A hole for a mixer
- The possibility of shelves and niches
Sink options
- A ceramic countertop sink: a classic
- An inset one: a modern look
- An integrated one of stone: premium
- An undermount one: a minimalist look
Lighting
- An LED strip under the countertop
- Mirror lighting
- For onyx countertops: lighting from below
Window sills
Standard parameters
- Depth: 15-40 cm (and more for table window sills)
- Thickness: 20-30 mm
- Projection beyond the reveal: 3-5 cm
Installation specifics
- A slope towards the room (to drain condensation)
- Or a perfectly flat surface with sealing
- Thermal insulation under the window sill
- Sealing the junctions with the frame and walls
Wide table window sills
- Depth 60+ cm
- The possibility of use as a work surface
- Reinforcing the structure (legs or brackets)
Finishing the edges of countertops
Types of finishing
Flat (Flat Edge)
- A simple straight edge at 90°
- A modern minimalist look
- The most economical option
- A small chamfer to take off the sharp edge
Bevelled (Beveled Edge)
- A chamfer at 45° or another angle
- A classic elegant look
- Reduces the risk of chipping
Half bullnose profile (Half Bullnose)
- The top edge is rounded, the bottom is straight
- A soft modern look
- A popular choice for kitchens
Full bullnose (Full Bullnose)
- A fully rounded edge
- Safe (no sharp corners)
- Suitable for children’s spaces
Waterfall (Waterfall)
- The countertop “flows” down the face
- A modern designer technique
- Especially striking for islands
Shaped profiles (Ogee, Dupont, Cove)
- Decorative classic profiles
- For traditional interiors
- Need individual fabrication
Finishing the back side
Polishing the visible parts If the edge will be visible (an island, a bar counter), it is polished to a shine.
Reinforcement For thin slabs and the zones around cutouts, mesh reinforcement is used.
Strengthening Installing embedded elements for reliable fixing.
Caring for countertops
Marble
Daily care
- Wiping with a soft damp cloth
- Using pH-neutral products
- Immediately removing spilled liquids (especially acidic ones!)
What you must NOT do
- Cut food without a board
- Put hot cookware down without a trivet
- Use acidic products (vinegar, lemon)
- Leave stains for long
Periodic care
- Renewing the water-repellent treatment (once a year)
- Polishing out scratches (if needed)
- Professional restoration (once every 5-10 years)
Travertine
As with marble, plus:
- Checking the condition of the pore filling
- Extra attention to porous areas
Onyx
The most delicate care:
- Only gentle products
- Avoiding any mechanical impact
- Regular water-repellent treatment
- Caution with the lighting (do not overheat)
Porcelain stoneware
Daily care
- Ordinary washing with any products
- Resistance to acids and alkalis
- You can cut on the surface (although not recommended)
What you must NOT do
- Put very hot cookware down (thermal shock for the grout)
- Strike with heavy objects (chips are possible)
What the cost of countertops and window sills depends on
The price depends on:
- The material (marble, travertine, onyx, porcelain stoneware)
- The variety and quality of the stone
- The dimensions and configuration
- The number and complexity of cutouts
- The type of edge finishing
- The presence of lighting (for onyx)
- The complexity of installation
For an exact calculation contact M-STONE!
Contact information
M-STONE: making and installing countertops
📞 Phones: +38 068 100 27 96, +38 050 914 18 99 📧 Email: [email protected] 🌐 Website: https://mstone.ua/
Social media
- Instagram: https://www.instagram.com/mstone_kiev/
- Facebook: https://www.facebook.com/mstone.kyiv/
- YouTube: https://www.youtube.com/@M-Stone_Kyiv/
Geography of work
Kyiv: all districts Kyiv region: Brovary, Irpin, Bucha, Vyshhorod, Vyshneve, Boiarka, Kozyn, Koncha-Zaspa and others
M-STONE’s advantages for countertops
✅ Own production: CNC machines, precision, quality ✅ Work with natural stone: marble, travertine, onyx ✅ Large-format porcelain stoneware: slabs up to 320×160 cm ✅ Any configurations: straight, corner, island ✅ Integrated sinks: made of the same material ✅ Lighting: for onyx countertops ✅ Guarantee: on the product and its installation
The current cost of work for your project can be calculated in the online calculators or confirmed by the manager: it depends on the material, the slab format and the condition of the substrate. The consultation is free.

About M-STONE
This material was prepared by the M-STONE team: 20 years of brand history, installation of large-format tile and natural stone in Kyiv and across Ukraine. The company is led by Oleg Dolynskyi. The recommendations describe the typical order of work; a specialist refines the solution for your project after a consultation.
Contact us
We will price your project
Send the dimensions and slab format: we will calculate the material and installation and suggest the timing.