Manufactory in the Zollernalb district · Balingen, Germany

Seamless clay floor. No cement, no plastics.

Claycasein is our clay casein trowel compound made from natural and renewable raw materials. It becomes a seamless clay floor, wipeable and hard-wearing like an oiled wooden floor. Just as good on walls and furniture. For doing it yourself or with your tradesperson.

Send request See the colours

Clay, quartz, casein, hemp fibresProject support via WhatsApp

Clay screed finished with Claycasein Base in an open kitchen with timber walls and a wood stove

Wooden table and chair on a Claycasein clay floor in Beige 10

Manufactory in the Zollernalb districtMade in Baden-Württemberg, Zollernalb district, Germany

Claycasein since 2022Grew out of renovating old buildings, started as a carpentry business in 2003

DIY-friendlyYou can do this. No craft skills required

Support via WhatsAppQuestions? Message +49 173 970 34 76, ideally with photos

Wipeable and hard-wearingOiled and waxed, comparable to a wooden floor

The product

Claycasein: a seamless clay floor that holds

Dry material to mix with water. The base colour is clay brown, and you tint the Base with up to 10 % earth and mineral pigments. The alternative to plastic-modified microcement, outside the direct wet area.

ClayQuartzCasein (milk protein)Mineral aggregatesBuilding lime, small amountHemp fibresEarth and mineral pigments, optional

No cement, no plastics, no PU sealant
Natural and renewable raw materials. A natural product, not certified, with a lively cloudy character. Every trowelled surface is unique.
Adheres to many substrates
Screed, concrete, wood, Fermacell, plasterboard, gypsum fibre, plaster, rammed earth, clay screed. Low-temperature underfloor heating: yes.
Wipeable thanks to hard oil and wax
Impregnated with hard oil, carnauba wax emulsion and hard wax. Hard-wearing like an oiled wooden surface.

Water drops bead off an oiled and waxed Claycasein surface, untreated clay next to it — Left Claycasein, oiled and waxed: water beads off. Right the untreated clay.

3 kg5 kg10 kg

Applications

One material. Many possibilities.

Floor, wall, kitchen, furniture: almost any surface. All from our customers projects, most of them trowelled by the owners themselves, some with us on WhatsApp.

Beige clay floor under a sloping ceiling, small lattice window and a wall niche — **Seamless floor**Trowel floor without cement. Best on crack-free screed

Wall coating with Claycasein in Grau 5.1 in a small WC with wooden walls and patterned tiles — **Wall coating**Wipeable, also in the bathroom: outside the direct wet area

Kitchen splashback with Claycasein in Beige 10 above the hob, wipeable and hard-wearing — **Kitchen splashback**Instead of tiles. On old tiles after preparation

Dark troweled table top with a vase of flowers, wooden and metal chairs — **Furniture and wood**Door leaves, table tops, worktops, upcycling too

Seamless stairs with landing in Claycasein Grau 80.20 in front of the dining area — **Stairs and steps**Floor and stairs in one piece, seamlessly drawn over the treads.

Listed building renovation: washbasin in front of a natural stone wall on a seamless Claycasein clay floor in Beige 10 — **Floor in a listed building**Old buildings and renovation: clay suits clay. In the bathroom only outside the direct wet area.

All applications Send request

Colours and textures

Colours that already exist

No colour chart, but real surfaces: the shades emerge from project to project from the Base and up to 10 % earth and mineral pigments. Surface samples on plywood, about 15 x 23 cm.

Sample board Claycasein Base, base material without pigment, two coats on plywood, clay brown with a cloudy texture — **Base**Base material without pigment. The liveliest texture: lighter and darker browns alternatealready realised

Claycasein Beige 10 on screed, light warm beige with 10 % titanium white rutile, two coats — **Beige 10**10 % titanium white rutilealready realised

Sample board Claycasein Sand, 5 % titanium white rutile and 1 % Terra di Siena, two coats on plywood — **Sand**5 % titanium white rutile + 1 % Terra di Sienaalready realised

Sample board Claycasein Grau 80.20, mix of 80 % Beige 10 and 20 % Grau 5.1, on plywood — **Grau 80.20**Mix of 80 % Beige 10 + 20 % Grau 5.1already realised

Claycasein Schwarz 10 with 10 % iron oxide black, three coats on old mineral plaster — **Schwarz 10**10 % iron oxide blackalready realised

Claycasein Umbragruen 05 on screed, 5 % umber green, pigmented by the customer herself — **Umbragrün 05**5 % umber green, pigmented by the customer herselfalready realised

All colours and samples

More than 20 realised shades, sample boards delivered to your home and the way to your own colour.

10 € plus VAT per sample board, free if returned within 14 days

See the colours

Application

A few steps to the finished surface

Mix, trowel thinly, sand, oil, wax. The short version of our application guide, in full on the Application guide page.

First thin coat of Claycasein on the floor, about 1 mm per coat

Mix and trowel

Mix with water, let it soak for 30 minutes. Apply thinly, about 1 mm per coat, 2 to 3 coats.

max. 360 ml of water per kg

Sand

After drying, sand lightly, level ridges, dust off. Wear a mask.

sanding mesh K220

Claycasein surface saturated with hard oil, with a silky sheen

Oil and wax

Saturate with hard oil and polish dry. Then carnauba wax emulsion and hard wax finish.

about 0.12 to 0.15 l of oil per m²

Application guide step by step

Project support via WhatsApp

If questions come up during application, we are happy to help via WhatsApp. A short project description with photos helps.

+49 173 970 34 76

Application guide, data sheet and safety data sheet as PDF on the Application guide page.

Sample box and prices

Everything for your first surface in one box

The sample box holds everything you need for a clay casein coating. Use it to lay sample and test areas and find your colour. Can be ordered once per customer.

RENNER Claycasein sample box: 3 kg Claycasein Base, casein primer, hard oil, hard wax, pad and application guide on the shipping carton

Test box with Base and accessories

€142.80per box plus VAT and plus shipping

Claycasein Base 3 kg
Casein primer 250 g
Floor hard oil 0.75 l
Carnauba wax concentrate 0.5 l
Floor hard wax 1 l
Polishing pad beige, normal
Polishing pad white, superfinish
Sanding mesh K220

Request sample box What is in the box

We are happy to offer pigments for tinting. The price list for earth and mineral pigments is in preparation.

Material costs per m²

Including oil, wax, pads and accessories, for areas from 25 m² and 2 to 3 coats. We recommend 3 coats.

about 45 to 60 € incl. VAT

Surface sample

Sample board about 15 x 23 cm on plywood, subject to availability. Free if you return it undamaged within 14 days.

10 € plus VAT

Insights

Our customers projects

Living spaces, kitchens and furniture. Every surface one of a kind. More of it regularly on Instagram and Pinterest.

Cloudy troweled clay floor in grey, grey sofa in front of a wooden wall — Grau 5.1 · Living room

Open kitchen with island on a seamless Claycasein clay floor in Beige 05, without cement or plastics — Beige 05 · Open kitchen, without cement or plastics

Modern stove and stairs on a light grey Claycasein clay floor in Grau 9.5.05, white walls — Grau 9.5.05 · Living room with stairs

Seamless clay floor in beige in an attic room, wooden post and lounge chair by the window — Beige 10 · Attic room

Table top trowelled with Claycasein in Schwarz 10, furniture coating with clay casein — Schwarz 10 · Furniture coating

Grey clay floor in an empty room with floor-to-ceiling windows looking into autumn woods — Grau 80.20 · Living room facing the woods

Dark troweled wall niche with a shelf, a watermelon resting on it — Schwarz 10 · Wall niche

Seamless Claycasein trowel floor in Umbragruen 05 with plants and a rug in the living room — Umbragrün 05 · Living room

Living room with a beige clay floor, light sofa and rug by the window — Beige 10 · Living room

#clubclaycasein@claycasein.original Send request

Instagram

New surfaces, new colours

On @claycasein.original we regularly show finished floors, walls and furniture from customer projects, new colours and the #clubclaycasein. Show us your project with the hashtag.

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