Waterproofing sheet of polymer modified bitumen with non-protected surface finished with polyethylene film.
Product variations:
ESTERDAN 30 P POL is a waterproofing bituminous sheet with non self-protected surface of 3.0 kg/m². Composed of a reinforced polyester felt reinforcement and covered on both sides with polymer modified bitumen mastic. A polyethylene film is used as anti-adherent material on both sides. Tested according to standard EN test methods.


  • Anti-capillary barrier in walls.
  • Waterproofing sheet on the outside of walls.
  • Two-ply self-protected membrane underlay mechanically fastened to the deck roof.
  • Improved single-ply membrane underlay for waterproofing of roofs with heavy bonded protection.
  • Improved single-ply membrane underlay for waterproofing of heavy unbonded or floating roofs with heavy protection.
  • Bottom or top sheet in two-layer membranes for waterproofing of roofs with heavy bonded protection.
  • Bottom or top sheet in two-layer membranes for waterproofing of heavy unbonded or floating roofs with heavy protection.

Advantages & Benefits

  • Absorbs structural movements well.
  • Helps to increase the durability of the sheet.
  • It retains its properties better over time.
  • Good anti-piercing protection from mechanical damage.
  • This sheet is suitable for waterproofing buried structures (basement walls) with a favourable technical evaluation (see DIT 567/11 "ESTERDAN - SELF DAN - POLYDAN BURIED STRUCTURES").
  • This sheet can be used on roofs without slope (see D.I.T. 550/10 "ESTERDAN PENDIENTE CERO").
  • High tensile strength and high elongation at break.
  • High resistance to tearing.
  • High resistance to static and dynamic piercing.
  • Rot-proof.
  • The membrane, being made of a bitumen mastic modified with plastomers, provides high performance at high and low temperatures, plasticity and resistance to ageing, which leads to greater durability of the sheet and greater safety of the waterproofing membrane.
  • The sheet can be combined, in two-ply membranes, with a sheet reinforced with glass fibre felt, which provides the waterproofing system with dimensional stability, of great importance in bonded systems.
  • Improves the performance of mechanically fastened sheets by providing a high wind suction resistance value and optimising the density of fastenings.
  • Very stable in the long term.

Instruction for Use

Preparation of the substrate:
The surface of the base substrate shall be resistant, uniform, smooth, clean, dry and free of foreign bodies. In the case of thermal insulation, the boards shall be laid flush with each other and without gaps of more than 0.5 cm between boards.
  • Two-ply membrane underlay heavy-duty bonded system and self-protected two-ply membrane underlay. The adhesion of the membrane to the substrate is carried out with a blowtorch. In the case of mortar or concrete substrates, a bituminous primer (CURIDAN, IMPRIDAN100, MAXDAN or MAXDAN RUBBER) must be applied beforehand. If the substrate is a weldable thermal insulation board, i.e. finished in asphalt (Rocdán A or Rocdán PIR VA), the primer is not necessary. The overlaps are to be welded and shall be 8 cm in both longitudinal and transverse directions.
  • Two-ply membrane underlay adhered system in green roofs. The sheet is adhered to the substrate with a blowtorch. In the case of mortar or concrete substrates, a bituminous primer (CURIDAN, IMPRIDAN100, MAXDAN or MAXDAN RUBBER) must be applied beforehand. The overlaps must be welded, and shall be 8 cm in both longitudinal and transverse directions.
  • Two-ply membrane underlay with unbonded or floating system with heavy duty protection. In this case, the membrane is only welded to the substrate at singular points (parapets, expansion joints, drains, etc.), where a bituminous primer (CURIDAN, IMPRIDAN100, MAXDAN or MAXDAN CAUCHO) has been previously applied. Non-adherence to the substrate must be guaranteed and a separating layer (DANOFELT PY 150 or Velo 100) may be necessary between the substrate and the waterproofing membrane. The overlaps must be welded and shall be 8 cm in both longitudinal and transverse directions.
  • Top sheet of two-layer waterproofing membranes with heavy duty protection. The sheet is laid in the same direction as the bottom sheet, shifting the overlap line by approximately half of the roll. The sheet is fully welded to the bottom sheet with a blowtorch. The overlaps must be welded, and will be 8 cm in both longitudinal and transversal directions.
  • Waterproofing of walls. A bituminous primer (CURIDAN, IMPRIDAN100, MAXDAN or MAXDAN RUBBER) must be applied beforehand. For ease of installation, it is recommended to cut the rolls into smaller, more manageable dimensions, adjusting to the width of the wall.

Indications and Important Recommendations

  • In case of new construction and renovation, possible chemical incompatibilities with other sheets shall be taken into account.
  • In case of renovation, chemical incompatibilities with old waterproofing consisting of flexible PVC sheets, modified tar-based mastics or any other, shall be taken into account, and it may be necessary to remove them completely or to use suitable separating layers (geotextiles, mortar layer, polyethylene film, etc).
  • If it is necessary to adhere to metallic or slightly porous elements, a bituminous primer (IMPRIDAN 100) shall be applied to the entire surface to be welded beforehand.
  • On roofs, do not use in single coat system.
  • This product may form part of a waterproofing system, so all the documents referred to in the Danosa Solutions Manual must be taken into account, as well as all the regulations and legislation that must be complied with in this respect.
  • Sheets made of plastomeric bitumen require more blowtorch input than sheets made of SBS elastomeric bitumen in order to work properly. It is important to take this aspect into consideration when welding the sheets to the substrate, when welding the overlaps of the sheets and when welding the sheets to each other.
  • NOTE: For more information on the Danosa systems in which this product is used, please see the document "Waterproofing Solutions".
  • There is no chemical incompatibility between the Danosa range of oxyasphalt, SBS elastomeric bitumen and plastomeric bitumen sheets.
  • Do not use as a top sheet on green roofs.
  • Possible incompatibility between thermal insulation and waterproofing shall be checked.
  • A separating layer (DANOFELT or DANODREN) shall be laid before laying the heavy protection (paving, gravel, topsoil, etc).
  • Polyurethane foam shall not be sprayed directly on top of the waterproofing without the use of a suitable separating layer (geotextiles, mortar layers, polyethylene film, etc).
  • If expansion that could affect the sheet is expected, a geotextile separating layer (Danofelt PY 200) shall be used between the sheet and the extruded polystyrene insulation panels, so that each product expands independently.

Maintenance Recommendations

  • Maintenance requirements for Danosa Roofing Products The following maintenance checks must be adhered to: - A general examination on the condition of the waterproofing and surrounding roof components. - An inspection of all functional roofing elements including skylights, outlets, upstands, penetrations and any other visible roofing components. - Clean outlets, drains, gutters and remove any debris from the roof. - Periodic removal of mildew, moss, herbs or any other kind of vegetation that has been accumulation on the waterproofing. - Periodic removal of possible sediments accumulated on the deck (silt, sledges, slate granules, etc) by occasional water accumulation. - Periodic removal of debris and small objects that may have accumulated on the roof. - Ensure surrounding structural elements are sound such as eaves, flashings, slate tiles and brickwork. - Ensure that the waterproofing is in good condition and there are no blisters, damage or separation. - Review the condition of the waterproofing (adherence to upstands, condition of overlaps, visual appearance, etc) and repair the defects observed. These operations must be carried out twice a year, preferably at the beginning of spring or autumn and must be increased in case of decks or valleys with zero falls. It is also necessary to perform additional maintenance depending on the type of roof, location and proximity of roofs to areas with trees or in areas with high levels of pollution. More details on the document Maintenance and repair recommendations for flat roofs waterproofed with modified bitumen sheets

Handling, storage and preservation

  • Before moving the pallet, the condition of the shrink-wrap is checked in order to reinforce it if necessary.
  • Danosa recommends consulting the safety data sheet for this product, which is permanently available at, or it can be requested in writing from our Technical Department.
  • The product must be stored in a dry place protected from rain, sun, heat and low temperatures.
  • The product will be stored in an upright position.
  • The product will be used on a first-come, first-served basis.
  • In all cases, the Occupational Safety and Hygiene standards, as well as the standards of good construction practice, must be taken into account.
  • This product should not be installed when the temperature is below -5ºC.
  • This product is not toxic or flammable.
  • Waterproofing work must not be carried out when weather conditions may be detrimental, in particular when it is snowing or there is snow or ice on the roof, when it is raining or the roof is wet, surface dampness >8% according to NTE QAT, or when a strong wind is blowing.
  • Pallets shall not be stacked on top of each other.
  • For high storage, the racks must have three cross members, or braces under the wooden pallet skids.
  • For further information, please contact our Technical Department.
  • For handling with a crane, use a protective net as indicated on the pallet label.


  • The information contained in this document and any other advice provided, are given in good faith, based on DANOSA's current knowledge and experience when products are properly stored, handled and applied, in normal situations and in accordance with the recommendations of DANOSA. The information applies only to the application (s) and the product (s) to which reference is expressly made. In case of changes in the parameters of the application, or in case of a different application, consult the DANOSA Technical Service before using the DANOSA products. The information contained herein does not exonerate the responsibility of the building agents to test the products for the application and intended use, as well as their correct application in accordance with current legal regulations. The product images used in our communications are indicative and may differ slightly in color and aesthetic appearance in relation to the final product.Orders are accepted in accordance with the terms of our current General Sales Conditions.DANOSA reserves the right to modify, without prior notice, the data reflected in this documentation.Website: E-mail: Telephone: +34 949 88 82 10


  • Length (cm): 1200
  • Width (cm): 100
  • Thickness (mm): 2.5
  • Product code: 141901

Technical Data

Concept Value Standard
External fire behaviour Broof(t1) UNE-EN 1187
Density (kg/m³) 1200 -
Durability flexibility -5 ± 5 -
Creep durability (ºC) 120 ±10 UN-EN 1110
Longitudinal traction durability (N / 5cm) 700 ± 200 -
Transversal tensile durability (N/5cm) 450 ± 150 -
Elongation at break longitudinal (%) 45 ±15 UNE-EN 12311-1
Elongation at transverse break (%) 45 ±15 -
Humidity resistance factor 20.000 UNE-EN 1931
Low temperature flexibility (ºC) <-15 UNE-EN 1109
Mass per unit area (nominal) (kg/m²) 3 -
Reaction to fire E UNE-EN 11925-2; UNE-EN 13501-1
Resistance to static loading (kg) >15 UNE-EN 12730
Resistance to root penetration No pasa EN 13948
Longitudinal tensile strength (N / 5cm) 700 ± 200 -
Transverse tensile strength (N / 5cm) 450 ± 150 -
Longitudinal resistance to tearing (nail shank) (N) NPD -
Transversal resistance to tearing (nail shank) (N) NPD -
Resistance to impact, B (mm) >900 -
Hazardous substances PND -

Addtitional Technical Data

Concept Value Standard
Adhesion of granules (%) NPD UNE-EN 12039
Dimensional stability at elevated temperatures (longitudinal) (%) <0.6 UNE-EN 1107-1
Dimensional stability at high temperatures (transversal) (%) <0.6 -
Creep resistance at high temperatures (ºC) >130 UN-EN 1110

Environmental Information

Concept Value Standard
Volatile organic compounds (COV's) (µg/m³) 50 (A+) ISO 16000-6:2006
Recycled content afterword the consumer (%) 35 -
Manufactured in Fontanar -

Standards and Certification

  • In accordance with the UNE-EN 13707 standard for flexible sheets for waterproofing. Reinforced bituminous sheets for roof waterproofing. Definitions and characteristics.
  • In accordance with the UNE-EN 13969 standard for flexible sheets for waterproofing. Bituminous anti-capillary sheets including bituminous sheet for sealing buried structures. Definitions and characteristics.
  • It complies with the requirements of the Technical Building Code (CTE).
  • Complies with CE marking requirements.
  • Application Document DA18/2009.


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