Best 1k Bauschaum 2026

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Last Updated - 22.07.2026

Best Choice

01

AWOTEX

AWOTEX 12 x Mounting Foam B2 750 ml 1-K I Construction Foam Insulation Foam without CFC and HCFCs I Adhesive Foam for Insulation Panels I Mounting Foam Exterior I Mounting Foam Door Frame I Can Be

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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

Professional products – we at Awotex are specialists in custom-made slings and consumables on construction sites. Within 24 hours we will ship every order to your desired address.
Practical: the one-component sealing foam is moisture-curing, ageing-resistant, resistant to acids and alkalis and can be used at low material and ambient temperatures.
Polyurethane foam – the Awotex mounting foam construction foam is a ready-to-use PU foam for filling, sealing and insulating cavities. It sticks to concrete, plaster, masonry, wood and many plastics.
Environmentally conscious and certified – the PU foam waterproof is certified according to building material class according to DIN 4102, part 1, B2. It is CFC and HCFC free, so that the environment is not unnecessarily polluted.
Areas of application: the polyurethane foam insulation and much more. finds its main applications in the following areas: installation of door frames, heat-insulating insulation, insulation of water-conducting pipes, etc.

89,00 €
Value for Money

02

Isolbau

Isolbau - Construction Foam Mounting Foam 12 x 750 ml PU Foam 1K Gun Foam Frame Foam Insulation Sealing for Indoor and Outdoor Use

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9.7

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: the polyurethane foam can be used flexibly as sealing foam, insulation foam, insulating foam, filling foam, gun foam as well as door foam, window foam or frame foam. The foam adheres very well to all surfaces. Ideal for professional sealing and mounting of doors, windows, parapets, stairs, dividers and many other construction work.
Important features: very high yield: up to 45 litres; very high thermal insulation and joint sound insulation; can be cut quickly; resistant to ageing and rotting; free from freon (harmless to the ozone layer); high filling capacity; temperature resistance (after curing): from -50°C to +90°C, foam yield: 45 litre (each according to air temperature and humidity). Skin formation time: 4-7 min. (20°C / RH 90%), curing time: 24 hours, can temperature +20°C.
Ecological: according to § 15 para. 2 p. 2 of the German Packaging Act, we are obliged to take back used filling goods containing harmful substances (in particular construction and assembly foam), which have been placed on the market by us, free of charge. Interzero Circular Solutions Germany GmbH, picks up the packaging on our behalf and picks it up from you free of charge. Telephone: +49 2203 9147-1366; Email: emballagen@interzero.de; Interzero customer number: 230513 Pick-up card: isolbau.de/abholkarte/abholkarte.pdf
CERTIFIED PRODUCT: The mounting foam is a certified product. The highest quality of the building material of class B2 according to the DIN 4102 standard is confirmed by the certificate of the MPA Hannover Test P-NDS04-1424. The gun foam was made in Germany.
Box contents: 12 x 750 ml PU foam; Storage and durability: Store product in sealed packaging in a vertical position (to prevent the valve from clogging), in a well-ventilated room and at a temperature of +5°C to +35°C (preferably room temperature) away from direct sunlight and other sources of heat and ignition.

86,52 €
03

Wuerth

5 Würth Purlogic Top 1K Gun Foam Concrete Grey Construction Foam Mounting Foam 0892142

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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

Up to 40 litres of foam yield
Suitable for winter
Resistant to ageing
Fine-cell and even foam structure
1K gun foam for a variety of applications

39,09 €
04

fischer

fischer Rapid Installation Foam PU S 750, Construction Foam for Backfilling, Insulation and Damping, Polyurethane (PU) Foam, incl. Instant Use Adaptor 750 ml

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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

Ready for use: The quickly-mounted adapter allows for immediate use. No additional processing devices are required
Contents: 1 x fischer foam PU S 750 B2 (750 ml) with an adapter, without protective gloves, only suitable for commercial use
Building materials: Adheres to all standard building materials, e.g. Concrete, anodised layer, plasterboard, wood, sand-lime brick, PVC materials (including resins with high degree of polymerisation – HPVC), masonry, metals, plaster
Applications: For insulating and filling window connection joints around window sills as well as roller shutter boxes, finished elements, wall connections, wall openings and cavities and much more
All-rounder: The rapid installation foam with proven high level of sound insulation and water pressure resistance is suitable e.g. for window joints or for bonding concrete shaft rings

13,99 €
05

AWOTEX

AWOTEX 12 x Mounting Foam B2 500 ml 1-K I Construction Foam Insulation Foam without CFC and HCFCs I Adhesive Foam for Insulation Panels I Mounting Foam Exterior I Mounting Foam Door Frame I Can Be Painted and Plastered

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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

Professional products – we at Awotex are specialists in custom-made slings and consumables on construction sites. With 21 years of experience, we are your reliable partner for the field of construction and accessories.
Practical: the one-component sealing foam is moisture-curing, ageing-resistant, resistant to acids and alkalis and can be used at low material and ambient temperatures.
Polyurethane foam – the Awotex mounting foam construction foam is a ready-to-use PU foam for filling, sealing and insulating cavities. It sticks to concrete, plaster, masonry, wood and many plastics.
Environmentally conscious and certified – the PU foam waterproof is certified according to building material class according to DIN 4102, part 1, B2. It is CFC and HCFC free, so that the environment is not unnecessarily polluted.
Areas of application: the polyurethane foam insulation and much more. finds its main applications in the following areas: installation of door frames, heat-insulating insulation, insulation of water-conducting pipes, etc.

69,00 €
06

fischer

fischer Rapid Installation Foam PU 500, Building Foam for Backfilling, Insulation and Damping, Polyurethane (PU) Foam, incl. Quickly-Mounted Adapter for Instant Use and Reuse, 500 ml

42% Off

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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

Reliable damping and insulation: The waterproof expanding foam is ideal for sound insulation and ensures a reduction of noise, while providing good thermal insulation, e.g. when working with roof trusses
Practical, no additional foam gun needed: To process the polyurethane (PU) foam, you do not need a separate processing device, as the quickly-mounted, lockable adapter ensures it is ready to use immediately, so that opened dispensers can be reused
For numerous building materials: The polyurethane foam adheres reliably to all standard building materials, such as Concrete, anodised layer, plasterboard, sand-lime brick and masonry – thanks to the tested water pressure resistance, the foam is also ideal as a special foam for well shafts
Contents: 1 x 500 ml rapid installation foam PU 1/750 (item no. 50426), construction foam with German building authority certificate. B2 fire rating, incl. Protective gloves from fischer
Areas of application: The filling foam is suitable for the insulation and filling of finished elements, window connection joints, for installing window sills, roller shutter boxes as well as in roof construction, construction with drywall, for gluing and sealing shaft rings and much more

7,01 € 12,09 €(42% Off off)
07

Soudal

12 x Soudal Soudafoam 2K, 400 ml, building material class B2, aerosol can - ready-to-use, two-component frame foam for quick and secure installation of door frames and window elements

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9.2

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

The high dimensional stability of the PU foam prevents shrinkage and re-stretching, allowing for durable, reliable application - ideal for precise work
Thanks to the outstanding insulation value for heat and sound insulation as well as excellent adhesive properties, ideal for filling cavities, sealing all openings in the roof construction as well as optimising insulation in cooling systems
Due to the fast curing and high adhesion, it is particularly suitable for mounting windows and doors as well as for placing bath and shower tray supports

68,79 €
08

dubaust

12 x dubaust MSP24 Construction Foam Mounting Foam Gun Foam 750 ml Combination Sets PU Filling Foam Insulation Foam High Sound Insulation Thermal Insulation Insulating B2 750 ml

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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

Very good adhesive properties
Sound insulation 62 dB / insulation value (DIN 52612) 35.4 mW/m.K
High filling capacity (approx. 45 litres)
High dimensional stability (no shrinking or re-stretching)
Good adhesion to all surfaces (except PE, PP and PTFE)
For sealing all openings in the roof construction and similar
For mounting window and door frames

73,90 €
09

PRITEX

PRITEX Construction Foam Set 3 x 750 ml Gun Foam Including Gun Cleaner 500 ml and Foam Gun - Mounting Foam for Filling, Insulating & Sealing - PU Foam with Excellent Sound and Heat Insulation

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8.8

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: with the PRITEX construction foam all-round set, you are well equipped for the filling, sealing and insulation of window frames, cavities between roller shutter boxes and masonry, wall joints, pipe openings and cable guides
Sound and heat insulation: in addition to very good sound insulation (up to 61 dB), the building foam also impresses with excellent thermal insulation, which prevents cold bridges
Product details: 3 x 750 ml gun foam, 1 x 500 ml gun cleaner and a foam gun. 750 ml of building foam yield a foam yield of up to 45 litres (free foam)
Practical accessories: the gun is made of metal and has a rubberised handle for optimum grip. The gun cleaner is perfect for rinsing PU mounting guns and removing fresh PU foam dirt
For various surfaces: the foam adheres excellently to concrete, plaster, masonry, wood and many plastics (polystyrene, PU hard foam, polyester, hard PVC, except PE/silicone) as well as on damp surfaces

32,95 €
10

Pattex

Pattex 1996883"White Line" Assembly Foam, White, 500 ml

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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 - The foam adhesive can be used for various applications, e.g. for filling and insulating window frames or sealing well and shaft rings.
Practical box contents - Pattex White Line mounting foam, pure white PU foam, particularly fine cell structure, heat and sound insulating, high flexibility, 1 x 500 ml
Many materials - Pattex White Line filling foam is suitable for many absorbent materials*, but also for mounting door frames made of plastic or wood.
Highly efficient - As a high-quality insulation foam, Pattex White Line has 4x more cells per room unit thanks to WhiteTeq Quattro technology and offers 25% flexibility.
High insulation - The frame foam provides 20% better thermal insulation** (0.032 W/mK) and 50% better sound insulation** (63 dB) and can be used e.g. for filling and insulating window frames.

7,87 €