Best Delta Dachfolie 2026

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Last Updated - 27.03.2026

Best Choice

01

Generic

Dörken Delta XX Plus Underlay and Underlay Sheet 50 x 1.50 m Diffusion Open Energy Saving Sheet

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9.9

Exceptional

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Main highlights

The integrated self-adhesive strips allow direct bonding of the overlap and reliably prevent cold air and moisture from entering the insulation. This allows more energy efficiency and living comfort. In addition, the self-adhesive edge facilitates the execution of overlap adhesion.
The diffusion-open underlay and underlay sheet is characterised by its special durability and protects the roof permanently.
Thanks to the high elasticity, our Delta XX Plus Universal offers more safety in case of unplanned contact with the shoe tip (high ladders) and tools. The mouldability also allows easy and comfortable processing - even with difficult details.
DELTA-XX PLUS UNIVERSAL impresses with proven durability and thus ensures long-term protection. Extreme quality and long-term tests as well as special testing procedures confirm the special resistance. The extreme durability is clearly proven by an appropriate ETA.

230,90 €
02

DÖRKEN

DOERKEN Delta XX Plus 2208324 Universal Doarenken 1.50 x 50 m

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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

Universally applicable: perfect for fully insulated pitched roofs, whether directly laid on insulation or on wooden formwork. Complies with ZVDH classes UDB-A and USB-A Can also be used as a cover under metal or slate.
Robust and easy to install: tear-resistant material (approx. 150 g/m²) makes it easier to use on the roof. Dimensions: 1.50m x 50m roll (75m²). Temperature resistant from -40°C to +80°C.
Maximum durability: this premium underlay offers ETA confirmed high ageing resistance and an extra long service life. Includes 30 year manufacturer's warranty for your safety.
Integrated self-adhesive edges: equipped with adhesive zones on both edges for direct, windproof bonding ("glue-in-adhesive system"). Prevents cold air and moisture from entering the insulation.
HIGH DIFFUSION SOFFS (Sd 0.08m): The special PU functional layer allows moisture to escape reliably from the inside, while it protects against rain and flying snow from the outside.

195,34 €
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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9.6

Exceptional

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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.

61,95 €
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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9.4

Excellent

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Main highlights

Very 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.
Variable – In addition to the classic application as a substrate sheet, the ProLine 130 is also suitable as a facade membrane for closed facades. It offers flexible applications in the roof and wall area.
Reliable weather protection - The underlay sheet can be laid directly on the thermal insulation or wooden structures. It effectively protects against driving rain, wind load and UV radiation.
Highly diffusion fabrics and mould-resistant - 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.
Easy and quick installation - 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 according to ZVDH - ALMO ProLine 130 meets the requirements of the ZVDH classification UDB-A / USB-A and meets the highest standards for roof sealing.

77,95 €
Value for Money

05

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

Very 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.
Variable – In addition to the classic application as a substrate sheet, the ProLine 130 is also suitable as a facade membrane for closed facades. It offers flexible applications in the roof and wall area.
Reliable weather protection - The underlay sheet can be laid directly on the thermal insulation or wooden structures. It effectively protects against driving rain, wind load and UV radiation.
Highly diffusion fabrics and mould-resistant - 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.
Easy and quick installation - 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 according to ZVDH - ALMO ProLine 130 meets the requirements of the ZVDH classification UDB-A / USB-A and meets the highest standards for roof sealing.

77,95 €
06

DÖRKEN

Aluminium Delta Reflective Vapour Barrier 75 m² Vapour Barrier Roof 2,67 Euro/m²

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14% Off
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

Very good processing properties
Structural fire protection for flat roofs
Long-term protection of thermal insulation and roof construction
Heat reflection
Air and steam stop

189,00 € 219,99 €(14% Off off)
07

DELTA

Vapour Barrier Delta Dawi Dörken GP 2 m x 50 m 4 m x 25 m

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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

Steam barrier Delta Dawi GP 2 m x 50 m 4 m x 25 m 4 m x 25 m
Dörken
Construction material:

183,20 €
08

Smabix

SMABIX® Aluminium Roof Film, 5 x 1 m, Self-Adhesive with Strong Bitumen Adhesive, Easy to Use, Alternative to Roofing Felt & EPDM Film, Ideal for Garden Sheds, Garage Roofs and Sheds

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15% Off
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

Use: this self-adhesive roof film is perfect for garages, garden sheds, carports and sheds. It adheres to wood, metal, concrete and bitumen - ideal for various roof coverings.
Size and dimensions: the roof film measures 5 x 1 m, ideal for smaller areas. For a 15 m² garden shed you need 3 wheels. The film has a thickness of 1.2 mm and a weight of 6 kg per roll, making it durable and easy to handle.
Quality and reliability. Trust our experience and positive feedback from satisfied customers to ensure your roof is well protected.
Installation: Make sure that the outside temperature is at least 12 degrees during installation to ensure optimal adhesion of the self-adhesive bitumen sheet.
Ideal quality: as an alternative to roofing felt and EPDM film, this aluminium roof film offers easier handling. Compared to EPDM roofing film, it does not require special tools or glue and it is more cost-effective
High-quality material: made of robust aluminium with strong bitumen adhesive, the roof sheet is tear-resistant, durable and UV-resistant. It provides a waterproof roof cover and protects efficiently against the elements.
Easy to install: the roof film is self-adhesive and allows quick and easy installation without the use of special tools. Simply peel off the protective film, apply and smooth out. No welding or drilling required - ideal for everyone.

50,91 € 59,99 €(15% Off off)
09

HSS

HSS EPDM Self-Adhesive Roof Film - 10 m² KSK Roofing Sheet for Garden Shed & Carport - UV Resistant & Waterproof - 1.3 mm Thick - 100 cm x 10 m - Black

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8.6

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

Weatherproof and flexible: the UV-resistant EPDM film remains permanently elastic even in heat, frost or rain and is ideal for carport and garden shed roofs
Versatile: whether garden shed, tool chamber, carport, canopy or outdoor sauna – the roof film is versatile and also suitable as a high-quality alternative to bitumen or aluminium roofing sheets
Quick processing: the self-adhesive KSK roofing sheet has an integrated adhesive layer and is easy to cut, place and press - without additional tools or glue
Made in the EU: our EPDM roof film is produced in the EU, is tested for material resistance and is ideal for long-lasting renovations and new buildings
DURABLE & STRONG Our fabric reinforced EPDM roof sheet is 1.3mm thick and has a lifespan of over 50 years in the roof area. It is ideal for roofing in the carport, garden shed, tool chamber and other flat roofs

159,80 €
10

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 (37.5 m² (25 m x 1.5 m))

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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

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.
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.
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.

35,00 €