Best Balkon Abdichten 2026

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Last Updated - 22.07.2026

Best Choice

01

Alfa

Alfa Easy Flachdachabdichtung 1 K 7kg Liquid Igdicht Fabric Roof and Garagenabdichtung

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9.9

Exceptional

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Main highlights

Water vapour permeable, no sticky surface, low viscosity product, solvent-free, isocyanate-free, contains dibutilin contents
The DIY direct flat roof sealing/liquid plastic: join the over 250,000 satisfied customers. Professional quality from Alfa at Heimwerker Direkt. Fast. Reliable. Affordable.
Temperature resistance: -40 to +80 °C, processing temperature +5 to +40 °C, curing time: 3 hours at 23°C/50% humidity. Fully cured after 12 hours, volume change: <3%
Immediately waterproof, UV and weather resistant, adhesion to many surfaces - can then be walked on
Easy to use - only 2 coats, no primer and fleece required, short curing times
Consumption approx. 1.4 - 2.0 kg/m², ready to use (one-component), crack-bridging up to 3 mm

93,99 €
02

isolera Abdichtungssysteme

isolera Liquid Plastic - Elastic Hybrid Polyurethane for Sealing Indoor and Outdoor Use, Waterproof, UV & Weather Resistant, No Primer Required, Grey, 4 kg, Made in Germany

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9.8

Exceptional

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Versatile use on many surfaces: excellent adhesion to concrete, wood, bitumen, cement boards, metal, plastic, ceramic, tiles, glass, aluminium, copper, PVC, polyurethane
Reliable liquid plastic for sealing and construction: highly elastic, UV and weather resistant – ideal for flat roofs, balconies (no wear layer), wall connections, roof windows, detail connections and many other applications
Fast curing and highly flexible: short curing times for quick further processing – extremely stretchy and resilient even with temperature fluctuations
Easy to use without primer: no primer required – only 2 coats are enough for a durable, waterproof and diffusion-open seal indoors and outdoors
Available in grey – 4 kg or 15 kg container: for large and small sealing projects – recommended processing at least 10 °C environment and 5 °C component temperature

66,10 €
03

Isolbau

Isolbau 20kg Balcony Waterproofing Sealing Slurry, 2-K Waterproofing Terrace Balconies Bathroom Basement Shower

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9.6

Exceptional

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Water-insulating two-component sealing sludge for indoor and outdoor use. Polymer and cement based. Seamless and jointless. Fibre-reinforced. Ideal for balconies, patios, basements, ceilings, foundations.
The balcony sealing 2K coating is monolithic, protects buildings from aggressive chemicals (sulphates, chlorides, acids) and all other active chemical compounds in the soil. The compound is easy to work with and can be easily applied to intricately shaped or curved surfaces. Isolbau balcony waterproofing 20kg bucket consists of: Comp. (A) 5 kg liquid comp: (B) 15 kg powder
Opens to diffuse, frost, UV and ageing resistant, Water-repellent, Suitable for all coverings, Flexible, Hydraulic setting, Crack-bridging.
Isolbau Balcony Waterproofing 2K 20 kg elastic, fast-curing, 2-component waterproofing slurry for bonded waterproofing under ceramic coverings, as concrete surface protection and structural waterproofing, terrace and balcony waterproofing shower, bathroom, basement, indoors and outdoors.
Flexible two-component sealing membrane. Particularly waterproof - even with continuous exposure to water, particularly long weather resistance, high scratch resistance, good load capacity and high vapour permeability. The coating is rough and is suitable as a base for ceramic coverings.

65,89 €
Value for Money

04

MEM

MEM Balkon-Imprägnierung, Für saugende Untergründe, Wasserabperleffekt, Wasserdicht und atmungsaktiv, Lösemittelfrei, 5 l

32% Off

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9.5

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Transparent and solvent-free impregnation with water beading effect for absorbent surfaces, which impregnates cracks up to 0.2 mm waterproof and breathable
Surface to be processed must be clean, cover the surface that is not to be processed, remove paint and rust from metal parts at transitions, apply impregnation with brush, tassel or lambskin roller, allow each layer to dry for 1 hour
Ideal for terraces and balconies made of tiles, ceramic, concrete, stone and screed as well as for joints in showers and bathrooms, excellent for indoor and outdoor use, preventive treatment recommended
Box contents: 1 x MEM balcony waterproofing, solvent-free, contents: 5 l, colour: milky white, item number: 30836441
After curing, transparent and breathable, water-repellent protective layer prevents moisture penetration, water vapour permeability is largely retained, consumption: 5 l/25 m²

32,71 € 47,95 €(32% Off off)
05

Ultrament

Ultrament Power Seal Universal Sealant, 5 Litres

11% Off

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9.4

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Wide range of applications: Power Seal is intended for outdoor use and can be used on bitumen, sanded roofing membranes, weldable sheeting, concrete, plaster and masonry.
Top quality: Power Seal is UV-resistant and bridges cracks.
Other features: The universal seal is available in black and is solvent-free.
Faster work: The seal has a quick drying time.
Easy to use: the universal sealant is ready to use and extremely flexible.

26,59 € 29,99 €(11% Off off)
06

plid

Plid Liquid Plastic Indoor and Outdoor Use, Anthracite Grey, 5 L, Liquid Plastic, Protective Layer for Floor and Wall, Concrete Paint, Waterproof, Floor Coating, Patio, Workshop, Basement, Liquid PVC

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9.3

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Water-based, solvent-free floor coating - odourless to use and safe for many indoor and outdoor floor types. Not suitable for garage floors as well as smooth tile surfaces.
Made in Germany - controlled brand quality - production in Germany allows regular quality controls, short production channels and a direct influence on constant manufacturing standards.
Heavy Duty Floor Sealant for Indoor & Outdoor Use - Provides high protection against abrasion and impact. Ideal for living areas, balconies and patios, with proper use without standing water or continuous wet load.
Flexible and durable protective coating - The elastic formula adapts to the surface, effectively prevents cracking and ensures an even, resilient and visually clean floor seal in the long term.
Easy to use with professional results - Easy to apply with brush or roller for optimal distribution. Provides an even, streak-free finish without complicated processing steps.

59,90 €
07

HSS

HSS Liquid Plastic for Sealing & Repair - UV & Weather Resistant - MS Polymer - Solvent & Bitumen Free - Transparent - 800 g for Approx. 2.2 m²

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9.1

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Versatile use: for wood, glass, metal, zinc, roofing sheets, sheet metal & more - ideal for sealing old roof seals, wall, patio, screws, tiles & wall surfaces - also suitable for small cracks & hard to reach areas
UV & WEATHER RESISTANT: MS polymer seal permanently protects against rain, sun & moisture - no quick brittleness - ideal for long term outdoor applications
Solvent-free and gentle on materials: free from bitumen, silicones and solvents – low odour and suitable for sensitive surfaces such as concrete, stone, glass, wood or plastic (for coated surfaces if necessary sanding)
Easy to use: 1-component, ready to use - apply in 2 layers if necessary, insert fleece in between - no mixing or priming required
Durable: highly elastic, resistant to ageing and cracking - if used correctly lasts over 20 years - resists mechanical stress, UV radiation and frost - ideal for new buildings or renovations

54,99 €
08

BIBODU

BIBODU® Transparent Waterproof Coating Agent 5 kg | Sealant Waterproof High Quality | Liquid Plastic for Patios, Roofs, Outdoors, Indoors, Kitchens

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9.0

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

️[TOTAL PROTECTION]: The waterproofing compound outside waterproof effectively protects against water and moisture and ensures that your surfaces stay dry and safe. It is also used as a water repellent.
️[Maximum adaptability]: The transparent waterproof seal is perfect for a variety of materials such as concrete, wood, ceramic, plastic, metal and glass.
️[HIGHEST QUALITY]: The waterproof sealant is made of high-quality raw materials with acrylic technology to ensure an effective and durable seal. It is non-toxic and contains no solvents or bitumen. Each kilo covers between 1 and 1.5 m², depending on surface type and porosity.
️[Guaranteed resistance]: The transparent liquid plastic provides long-lasting protection against environmental influences, sun and weather and keeps your surfaces in optimal condition.
️[Easy to use]: Apply the sealant with a brush or brush in two layers. First apply a layer to the surface to be sealed and wait 4 hours. Then apply the second coat. Drying is visible after 3 hours, and full protection is achieved after 72 hours.

37,99 €
09

BH BAUHANDEL24

Bauhandel24 – Sealing Strip D11 10 m², Shower Sealing Film, Sealing Film, Shower Element

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8.9

Very Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Outdoor use – the track is also suitable for applications such as patios, balconies, porches under ceramic coverings according to DIN 18531
Installation – The sheet is easy to work with and is used for sealing under tiles and floor coverings
Indoor use: the seal tested for wet areas such as showers, bathrooms and kitchens according to stress classes A and C
Features: the sealing material has a metre marking and is ageing and alkali resistant
Dimensions: length 10 m, width 100 cm, thickness 0.6 mm

56,90 €
10

HSS

HSS Liquid Plastic for Sealing & Repair - UV & Weather Resistant - MS Polymer - Solvent & Bitumen Free - Transparent - 250 g for Approx. 0.7 m²

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8.7

Very Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Versatile use: for wood, glass, metal, zinc, roofing sheets, sheet metal & more - ideal for sealing old roof seals, wall, patio, screws, tiles & wall surfaces - also suitable for small cracks & hard to reach areas
UV & WEATHER RESISTANT: MS polymer seal permanently protects against rain, sun & moisture - no quick brittleness - ideal for long term outdoor applications
Solvent-free and gentle on materials: free from bitumen, silicones and solvents – low odour and suitable for sensitive surfaces such as concrete, stone, glass, wood or plastic (for coated surfaces if necessary sanding)
Easy to use: 1-component, ready to use - apply in 2 layers if necessary, insert fleece in between - no mixing or priming required
Durable: highly elastic, resistant to ageing and cracking - if used correctly lasts over 20 years - resists mechanical stress, UV radiation and frost - ideal for new buildings or renovations

21,99 €