Best Delta Dachfolie 2025

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Last Updated - 26.07.2025

Best Choice

01

Dörken

Dörken Delta Maxx Plus Energy Saving Membrane 50 m x 1.5 m, 190g/qm

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9.7

Exceptional

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Main highlights

With integrated Rand for Vollgedämmte angled roofs with
Diffusionsoffene of, windproof underlay membrane
Also suitable as a cased train

284,97 €
02

Aquagart

Aquagart High Quality Diffusion-Open Underlay Sheet, 50 m Formwork Sheet, Black, 130 g/m², 1.5 m Wide, SD Value: 0.02 m, Roof Film, Waterproof & Breathable, Roofing Felt Roofing Felt

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9.6

Exceptional

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Main highlights

The sealing membrane with a fire behaviour of class E offers a three month UV stability and a water vapour permeability of 2000 g/m²/24 h
The roof underlay is made of high-quality material and impresses with its enormous stability, extreme tear resistance and high steam diffusion
The 3-layer roof film is waterproof and breathable thanks to a breathable PE membrane between the two PP fleece layers
The 1.5 m wide black underlay has a surface weight of 130 g/m, a resistance to water passage: class W1 and an SD value of 0.02 m
Our underlay film is applied directly to the rafters or roof formwork, or can also be laid directly on the thermal insulation

84,70 €
03

Hausa

HAUSA Classic HU100 Underlay Sheet 100 g/m² Flexible Three-Layer Highly Diffusion Open Underlay Sheet 1.5 m x 50 m (75 m²) Tear-Resistant Weather-Resistant without Self-Adhesive Strips Waterproof

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9.4

Excellent

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Main highlights

Technical data: water vapour permeability, SD value: < 0.02 m (+0.03; -0.01); weight: approx. 100 g/m² (+/- 10%), colour: grey, fire material class: E; resistance to water passage: class W1, UV resistance: 3 months; tensile strength in longitudinal direction: 150 (+30; -30) [N/50 mm], tensile strength in transverse direction: 85 (+20; -20) [N/50 mm]; elongation in longlonglonglongdirection direction 80 (+30; -30) [%]; elongation in transverse direction: 150 (+50; -50) [%]; resistance to tearing: 100 (+30; -30) [N]
Store in premises in a dry place, away from frost and heat. Keep out of weather conditions and direct sunlight. Avoid contact with wood impregnation that has not yet dried out.
Product features: Hausa Classic underlay HU100 is made from two layers of polypropylene fleece and a functional film and is equipped with a special anti-reflective coating that prevents the negative effects of light reflections. The functional membrane contains UV stabilisers that slow down their ageing process.
Our product: Hausa Classic HU100 is a flexible, three-layer, highly diffusion-open underlay, underlay and formwork sheet with high water vapour permeability (SD value <0.02 m) and high durability. Tear-resistant, weather-resistant and completely waterproof.
Contents: 1 x roll 1.5 m x 50 m (75 m²) underlay sheet Hausa Classic HU100 without self-adhesive strips; surface weight: 100 g/m²; on the product there are special prints that allow the formation of overlaps.
APPLICATION: Hausa underlay HU100 can be used on all ventilated and unventilated roofs under a variety of roof coverings such as ceramic/concrete/clay and sheet tiles etc. It can be laid directly on the thermal insulation or on the wooden construction (formwork) (without ventilation gap). Thanks to the light weight of the product, working on the roof is easy and safe.

59,95 €
04

ALMO

ALMO Diffusion-Open UV Underlay 37.5 m² (1.5 x 25 m), Facade Sheet, 130 g/m², Underlay Sheet, Water-Repellent and UV-Resistant with Integrated Self-Adhesive Seam

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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

Versatile – In addition to the classic application as a underlay sheet, the ProLine 130 is also suitable as a façade membrane for closed facades. It offers flexible applications in the roof and wall area.
High density foam and mould: thanks to its breathable structure, the roof film supports optimal moisture exchange to the outside, allows a particularly high water vapour permeability (SD value 0.02 m) and reliably prevents the formation of mould.
Extremely tear-resistant 3-layer construction - The robust construction of two fleece layers and a medium special membrane ensures exceptional tear resistance, even under high mechanical stress.
Easy and quick to use: With a surface weight of 130 g/m², the ALMO underlay offers an ideal balance of stability and flexibility. The integrated self-adhesive strips allow safe and time-saving installation on the roof.
Certified quality: ALMO ProLine 130 meets the requirements of the ZVDH classification UDB-A / USB-A and meets the highest standards for roof sealing.
Additional weather protection - The underlay sheet can be laid directly on the thermal insulation or wooden constructions. It effectively protects against driving rain, wind load and UV radiation.

77,95 €
Value for Money

05

AMF Life

AMF Life Roof Sheet, Roof Foil, Underlay Panel, Vapour Blocker, 115 g/m², Anthracite, Width 150 cm, Length Selectable

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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

Very easy, quick processing, easy to cut without fraying, protective layer for thermal insulation from wind and moisture.
Multi-layer quality fleece, breathable, UV-stabilised, waterproof, anti-mould, weather-resistant, high vapour diffusion.
Long life: extremely robust and durable, 115 g/m² strong material, tear-resistant, anti-mould thanks to diffusion-open material
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45,99 €
06

Generic

Roof Underlay Sheet, Roof Film, Underlay Sheet, Vapour Barrier, Underlay Sheet 1.5 m x 10 m, 25 m, 50 m Underlay Sheet Veltec 100 g/m² Roll 75 m² Roof (15 m² (10 m x 1.5 m))

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8.9

Very Good

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Main highlights

SIZE: One roll corresponds to an area of 75 m² and has the specific dimensions 1.5 m x 50 m. Calculate how many rolls you need to get started with our product as soon as possible.
APPLICATION: It has been developed for use on pitched roofs as a waterproofing layer and can also be used as a wind protection layer for walls in houses with wooden frame construction. The above features indicate roofing sheets as a protective layer laid directly on the rafters or as a full formwork under the roofing.
Our product: Veltec 100 is a new three-layer roofing sheet, which is manufactured using a modern lamination process on the latest machines. This makes it possible to offer a product with high mechanical strength, high vapour permeability and waterproofing.
Main features: Veltec membranes can be laid in direct contact with the thermal insulation installed in the roof. For this reason, we recommend the use of membranes when building usable attics. Water vapour permeability: Class W1
Detailed information: our underlay sheet offers a surface weight of 100 g/m² ± 20%. Application temperature: -30 ÷ 80°C. Tensile strength: in longitudinal direction 350 N/50 mm, in transverse direction 100 N/50 mm. Water vapour permeability (Sd) 0.015 m. Additional fire behaviour class F.

22,00 €
07

ALMO

ALMO Underlay Roof 150 g/m² | 15 m² (1.5 x 10 m) Diffusion Open & UV-Resistant Water-Repellent Roof Film with 2 Self-Adhesive Strips | Facade Sheet & Underlay Sheet for Roof Sealing

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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 – In addition to the classic application as a underlay sheet, the ProLine 150 is also suitable as a façade membrane for closed facades. It offers flexible applications in the roof and wall area.
️ Reliable weather protection - The underlay can be laid directly on the thermal insulation or wooden constructions. It effectively protects against driving rain, wind load and UV radiation.
️ High density foam and foam - Thanks to its breathable structure, the roof film supports optimal moisture exchange to the outside, allows a particularly high water vapour permeability (SD value 0.02 m) and reliably prevents the formation of mould.
️ Extremely tear-resistant 3-layer construction - The robust construction of two fleece layers and a medium special membrane ensures exceptional tear resistance, even under high mechanical stress.
️ Easy and quick to use: With a surface weight of 150 g/m², the ALMO underlay offers an ideal balance of stability and flexibility. The integrated self-adhesive strips allow safe and time-saving installation on the roof.
️ Certified quality: ALMO ProLine 150 meets the requirements of the ZVDH classification UDB-A / USB-A and meets the highest standards for roof sealing.

49,75 €
08

Hausa

HAUSA Underlay 130 g/m² Grey 75 m² (1.5 m x 50 m) Highly Diffusion-Open Waterproof Underlay Sheet Weather- Ageing Resistant Tear-Resistant Formwork Sheet Ultra HU130 without Self-Adhesive Strips

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8.5

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: Ultra HU130 underlay sheet can be used on all ventilated and non-ventilated roofs under various roofs (ceramic tiles, concrete tiles, metal tiles). It allows direct installation on thermal insulation or wooden structures without additional ventilation gap. In addition, Hausa underlay is also suitable as a facade membrane for closed facades. Thanks to its robustness and light weight, it makes working on the roof easier.
Reliable roof protection: the Ultra HU130 underlay is a flexible, three-layer, highly diffusion-open underlay, underlay and formwork sheet with high water vapour permeability (SD value < 0.02 m) and high durability. Tear-resistant, weather-resistant and completely waterproof. This roof sheet effectively protects roof construction and thermal insulation from extreme weather conditions such as rain, driving rain, snow and wind.
Premium quality and durability: our underlay is made from two layers of high-quality polypropylene fleece and a functional film. It ensures UV resistance of up to 3 months and is classified in fire class E. Equipped with a special anti-reflective coating that prevents potential disadvantages caused by light reflections, as well as UV stabilisers that slow down the ageing processes.
Optimal air circulation: this particularly highly diffusion-open roof film allows efficient moisture regulation thanks to its three-layer construction to prevent mould formation and create a healthy indoor climate. The Ultra HU130 underlay sheet wicks moisture away from the insulation to the outside while preventing water from entering the interior.
Contents: 1 x roll 1.5 m x 50 m (75 m²) underlay sheet Hausa Ultra HU130 without self-adhesive strips; surface weight: 130 g/m²; on the product there are special prints that allow the formation of overlaps. Technical data: water vapour permeability, SD value: < 0.02 m (+0.03; -0.01); colour: light grey, fire material class: E; resistance to water passage: class W1, UV resistance: 3 months

75,45 €
09

Alfa

Alfa 1 x Flexible High Performance Adhesive Tape 50 mm x 25 m Professional Quality Vapour Barrier Vapour Barrier Roof Films Smooth Film Tape System Tape

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8.3

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

Strong adhesive power – the Alfa Flex film tape is characterised by its strong, durable and reliable adhesive strength on a wide range of materials
Sticks to many materials – the adhesive strength, elasticity and resistance ensure that the flex can connect airtight with a wide range of materials
Guaranteed long-lasting sealing: thanks to its strong adhesive strength and elasticity, the tape clings airtight to a wide range of surfaces and allows a durable and airtight seal
Fast, reliable, inexpensive, craftsman quality
Durability: the high product quality, strong adhesive strength and resistance ensure durability, so we offer a 10 year functional guarantee
10-year functional guarantee – we trust our product, so we offer all customers a 10 year functional guarantee

12,90 €
10

okoium

doitBau deventt Underlay 1.5 m x 50 m (75 m²) 100 g/m² - Waterproof | Diffusion Open | Ageing Resistant | Film for Roof and Flat Roof | Roof Film | Easy to Install

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8.2

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

doitBau deventt underlay sheet 1.5 m x 50 m (75 m²) 100 g/m² - waterproof, diffusion, ageing resistant, film for roof and flat roof, roof film, easy to install
Product type: building material
Brand: Baupark24

57,69 €