Launching New Platform, contact us to if you like to place an order.we apologize for any inconvenience
Launching New Platform, contact us to if you like to place an order.we apologize for any inconvenience
Membrane Roofing Material Online Ireland
Pitched Roofing Underlay Supply Ireland

DELTA-MAXX X 75m2 breathable roof underlay


Regular price



Breathable, extremely tear-resistant sarking sheet featuring top and bottom self-sealing edges for fully-insulated pitched roofs. Suitable for temporary roofing. May also be used as soft sheathing.

Featuring the extreme tensile strength of 500 N/5cm both length- and crosswise, DELTA MAXX X stands out because of its high mechanical load-bearing capacity. Its unique, cold-insensitive overlap bonding works safely even at below-zero temperatures. The sheet can be laid out quickly thanks to its integrated self-sealing edges on the upper and under side and its calendered cloth backing. A sheet overhang c. 5mm wide along the edges additionally protects overlap zones from moisture. Absolute step-through safety for ladder work. No chemical wood preservatives in conformance with DIN 68800-2. Documented reliability for 15 years. Complies with BG fall-through safety criteria.

  • Extremely fall-proof with a tensile strength of 500/500 N/5 cm,
  • The underlay membrane offers high resistance to hailstorms and is an additional protective shield underneath the hard roofing (resistance up to 130 km / h).
  • Optimal temporary cover and safe protection below the roofing.
  • Extremely sure-footed, meets the criteria for the fall-through security of the BG.
  • Vapor-permeable and water-repellent polyurethane coating as well as storable carrier fleece for best moisture protection.
  • 25-year functional warranty (according to the guarantee conditions)
  • DELTA®-Bico Technology
  • Prevents moisture and  condensate from rafters and insulation
  • The adsorption layer of non-woven polyester, located on the underside of the membrane is capable of retaining up to 1000 g / m² of moisture, keeping the insulation dry.


The strongest man in Germany in 2013, has tested the material in his own special way - links below

DELTA MAXX X  youtube open >>>>>>tensile test

DELTA MAXX X  youtube open >>>fall  protection

 Technical data 

Polyester non-woven fabric with a waterproof and vapour permeable PU coating and sealing self-adhesive edge.

Fire resistance

Class E, EN 13501-1

Tear strength

approx. 500/500 N/5 cm,
EN 12311-1 + 2


Class W 1, EN 13859-1 + 2


approx. 0,15 m, EN ISO 12572

Servicetemperature range

-40 °C to +80 °C

Short-term maximum temperature load of the material

+120 °C

Resistance against driving rain

Pass in the driving-rain test for waterproofing and soft sheathing, TU Berlin


approx. 210 g/m²

Roll weight

approx. 16 kg

Roll size

50 m x 1,50 m

ZVDH classification UDB-A and USB-A, the highest grades

Guaranteed Safe Checkout