Official distributor of Naturheld GmbH for Bulgaria · stock in Bulgaria+359 876 999 586 · office@modopan.com
Naturheld · Isocell

Membranes and airtightness – Naturheld and Isocell

Roofing underlays, facade and renovation membranes, vapour barriers, tapes and grommets

The right membrane matters as much as the insulation. We supply the complete Isocell airtightness system — OMEGA roofing underlays and facade membranes, AIRSTOP vapour barriers, tapes, grommets and sealants — as well as the Naturheld roofing underlay and renovation membrane.

  • Roofing underlays and facade membranes
  • Renovation from outside without opening up the rooms
  • Vapour barriers on the inside
  • Tapes, grommets and sealants
Public prices

Know the price in advance

The prices are published in the price list, and the calculator works out the quantities and the membranes for a roof or a wall.

Isocell — airtightness system

91 products from the Isocell catalogue (Austria): OMEGA roofing underlays and facade membranes, AIRSTOP vapour barriers, tapes, grommets and sealants. End-customer prices including VAT are on each product page, by size; for quantities and lead times, send us an enquiry.

OMEGA roofing underlays

Vapour-permeable membranes for pitched roofs — for laying directly on thermal insulation or timber boarding.

Roofing underlay, weldable

OMEGA UDOs 330 TopGrip

Vapour-permeable, weldable membrane for sub-roofs with increased rain-tightness, with a non-slip non-woven facing on both sides.

from €11.08 / m² incl. VAT →
Roofing underlay, weldable

OMEGA UDOs 330

Vapour-permeable, weldable membrane for sub-roofs with increased rain-tightness to ÖNORM B 4119. Also supplied pre-welded to size.

from €9.47 / m² incl. VAT →
Roofing underlay

OMEGA MONOTOP 330 SK DUO

Vapour-permeable membrane with two integrated adhesive strips for sub-roofs with increased rain-tightness — for pitches from 5°.

from €7.37 / m² incl. VAT →
Roofing underlay

OM 240 ND SK DUO

Vapour-permeable roofing underlay for laying directly on thermal insulation or timber boarding, tested for tightness when perforated (ETA 25/0019).

from €6.65 / m² incl. VAT →
Roofing underlay, monolithic

OMEGA MONO 230 SK DUO

Monolithic vapour-permeable roofing underlay with increased UV resistance and resistance to driving rain. Also supplied pre-welded to size.

from €5.30 / m² incl. VAT →
Roofing underlay, monolithic

OMEGA MONO 200

Monolithic vapour-permeable roofing underlay for laying directly on thermal insulation or timber boarding; nail-tight to ÖNORM B 3647.

from €4.30 / m² incl. VAT →
Roofing underlay, three-layer

OMEGA 180

Three-layer vapour-permeable roofing underlay with a non-slip, tear-resistant surface.

from €3.19 / m² incl. VAT →
Roofing underlay, lightweight

OMEGA LIGHT

Lightweight three-layer vapour-permeable membrane for ventilated pitched roofs and for closed ventilated facades.

from €2.35 / m² incl. VAT →
Roofing underlay for metal roofing

OMEGA DRAINY PLUS

Vapour-permeable membrane with a three-dimensional drainage mesh for laying on timber boarding under metal roofing; with an integrated butyl strip for the longitudinal joints.

from €13.93 / m² incl. VAT →

Accessories for roofing underlays

Adhesives, sealing tapes under the counter battens, grommets and preformed parts for a tight sub-roof.

Adhesive sealant for membranes

OMEGA QUILLI

Adhesive sealant for rainproof and windtight bonding of roofing underlays at overlaps and junctions, and for sealing the nails and staples under the counter battens.

from €14.98 incl. VAT →
Adhesive for membranes

OMEGA N55

Adhesive for windtight and watertight bonding of UV-resistant facade membranes and of OMEGA UDOs 330 to each other and to concrete, timber and sheet metal — with a cold-welding effect.

Data and sizes →
Welding fluid for membranes

OMEGA QSM

Fluid for homogeneous windtight and watertight welding of the OMEGA UDOs 330 roofing underlay.

Data and sizes →
Sealing tape under counter battens

OMEGA NDB ESK

Single-sided adhesive bitumen tape, 2 mm, for sealing the screws and nails under the counter battens — for pitches from 1.5°.

from €1.55 / m incl. VAT →
Sealing tape under counter battens

OMEGA NDB DSK

Double-sided adhesive bitumen tape, 2 mm, for sealing the screws and nails under the counter battens — for pitches from 1.5°.

from €1.60 / m incl. VAT →
Sealing tape under counter battens

PE NDB DSK

Double-sided adhesive PE foam tape, 3 mm, for sealing the screws and nails under the counter battens — for pitches from 5°.

Data and sizes →
Sealing tape under counter battens

PE NDB ESK

Single-sided adhesive PE foam tape, 3 mm, for sealing the screws and nails under the counter battens — for pitches from 5°.

from €0.38 / m incl. VAT →
Pipe grommet, external

OMEGA Alu-Butyl GD2

EPDM grommet with an aluminium-butyl sealing patch for sealing pipe penetrations inside and outside — on wood fibre boards, concrete and roofing underlays.

from €11.50 incl. VAT →
Pipe grommet, external

OMEGA Alu-Butyl RGD

EPDM grommet with an aluminium-butyl sealing patch for larger pipe penetrations inside and outside — on wood fibre boards, concrete and roofing underlays.

from €26.09 incl. VAT →
Pleated pipe grommet for roof slopes

OMEGA Alu-Butyl FRGD

Pleated EPDM grommet with an aluminium-butyl sealing patch for pipes that pass through a roof with a pitch of up to 45°.

from €45.70 incl. VAT →
Sub-roof ventilation

Ventilation spigot for roofing underlay

Two-part spigot for a secure penetration of the roofing underlay and ventilation of the roof space.

Data and sizes →
Grommet for UDOs membrane

OMEGA UDOs pipe grommet

Permanently elastic grommet for sealing pipe penetrations through the OMEGA UDOs 330 membrane.

from €30.78 incl. VAT →
Grommet for UDOs membrane

OMEGA UDOs pleated grommet

Ready-made preformed part for quick windtight and watertight connection of pipes to OMEGA UDOs 330 — for DN 110 — DN 125 and a roof pitch of up to 45°.

Data and sizes →
Preformed part for UDOs membrane

OMEGA UDOs external corner

Ready-made preformed part for quick windtight and watertight forming of external corners with the OMEGA UDOs 330 membrane.

Data and sizes →
Eaves strip with UV protection

OMEGA UDOs 330 UV eaves strip

Long-term UV protection for the OMEGA UDOs 330 membrane in the eaves area — the membrane is joined to a highly UV-resistant PVC.

Data and sizes →

AIRSTOP vapour barriers

Vapour barriers and airtight membranes for the inner side of roofs, walls and ceilings.

Vapour barrier for above-rafter insulation

OMEGA SD10

Weather-resistant, non-slip three-layer vapour barrier for laying beneath the thermal insulation in above-rafter systems. Also supplied pre-welded to size.

from €3.32 / m² incl. VAT →
Vapour barrier with variable Sd value

AIRSTOP DIVA

Vapour barrier with variable diffusion resistance for the airtight layer — with a high potential for the construction to dry out again.

from €4.75 / m² incl. VAT →
Vapour barrier with variable Sd value, reinforced

AIRSTOP DIVA+

Thread-reinforced vapour barrier with variable diffusion resistance for the airtight layer — very tear-resistant, with a high potential for drying out again.

from €5.14 / m² incl. VAT →
Non-woven fabric vapour barrier

FH FORTE

Soft, close-fitting vapour barrier with a moderate effect for roofs, ceilings and walls that are vapour-permeable on the outside.

from €2.30 / m² incl. VAT →
Kraft paper vapour barrier

AIRSTOP ÖKO Natur

Vapour barrier and airtight layer made of two layers of kraft paper with a strong integrated mesh — for walls, roofs, ceilings and floors.

from €2.68 / m² incl. VAT →
Vapour barrier for timber construction

TIMBERTEX

Tear-resistant vapour barrier and airtight layer for roofs and walls, with an appearance designed for timber construction.

from €2.17 / m² incl. VAT →
Vapour barrier

AIRSTOP SD18

Transparent, extremely tear-resistant vapour barrier and airtight layer for tighter wall, ceiling and roof constructions.

from €2.77 / m² incl. VAT →
Vapour barrier, reinforced

AIRSTOP SOLID SD23

Mesh-reinforced, extremely tear-resistant vapour barrier for the airtight layer in roofs and walls.

from €2.74 / m² incl. VAT →
Vapour barrier

AIRSTOP SD50

Universal and economical vapour barrier for roofs and walls that are vapour-permeable on the outside.

from €1.73 / m² incl. VAT →
Polyethylene vapour barrier

AIRSTOP VAP

High-quality flame-retardant polyethylene vapour barrier film for tighter wall and roof constructions — folded for convenient transport.

from €1.98 / m² incl. VAT →
Vapour-tight membrane

AIRSTOP 1500

Extremely strong vapour-tight membrane — completely impermeable to water vapour even under extreme moisture load.

from €5.92 / m² incl. VAT →

Adhesive tapes and sealants

System tapes and sealants for overlaps, joints and junctions — inside and outside.

Adhesive tape

AIRSTOP FLEX

Slightly transparent, strong adhesive tape for airtight bonding of vapour barriers and boards — with an extremely ageing-resistant adhesive for almost all substrates.

from €0.90 / m incl. VAT →
Wood-coloured adhesive tape

TIMBERFLEX

Strong adhesive tape with a high adhesive content and a wide adhesion range, in a colour matched to timber — preserves the look of the timber construction.

from €1.02 / m incl. VAT →
Adhesive tape

AIRSTOP FLEX FL, black

Black non-woven fabric tape with a protruding liner (fingerlift) for easy release — strong, with a high adhesive content, can be plastered and painted over.

from €1.51 / m incl. VAT →
Adhesive tape

AIRSTOP KB

System adhesive tape for airtight bonding of vapour barriers, OSB and MDF — with an extremely ageing-resistant adhesive for almost all substrates.

from €0.89 / m incl. VAT →
Adhesive tape, stretchable

AIRSTOP ELASTO

Slightly stretchable adhesive tape with a reinforced PE backing and high-quality acrylate adhesive — for vapour barriers, OSB, MDF and connections to timber, masonry and metal.

from €0.86 / m incl. VAT →
Linerless adhesive tape

AIRSTOP SOLO

Slightly stretchable adhesive tape without a liner — tears by hand and is quick to apply, inside and outside.

from €1.21 / m incl. VAT →
Pre-folded tape for corners

AIRSTOP COPLI

Pre-folded adhesive tape for permanently airtight taping at purlins, beams, corners and edges.

from €2.09 / m incl. VAT →
Sealant on a roll

AIRSTOP DIMAROLL

Bead of sealant that is applied like an adhesive tape — for permanently elastic, airtight bonding of junctions and overlaps of vapour barriers.

from €3.30 / m incl. VAT →
Double-sided adhesive mounting tape

AIRSTOP DUO KB

Double-sided adhesive tape — a mounting aid for fast and secure fixing of the vapour barrier to the construction on the inside.

from €0.79 / m incl. VAT →
Adhesive tape for difficult substrates

OMEGA ULTRA

Slightly stretchable adhesive tape for airtight sealing inside and outside — also bonds to difficult substrates such as PP films.

from €1.08 / m incl. VAT →
Adhesive tape for outdoor use

OMEGA EXOFIX

UV-stabilised adhesive tape with water-resistant adhesive for airtight connections and weather protection — also bonds to uneven substrates such as brick and concrete.

from €1.56 / m incl. VAT →
Sealant

AIRSTOP SPRINT

Fast-drying, odourless adhesive sealant for permanently elastic sealing of joints, junctions and overlaps of vapour barriers.

from €11.64 incl. VAT →
MS polymer-based adhesive sealant

OMEGA UNI MS

UV-resistant, permanently elastic and water-resistant adhesive sealant that can be painted over — for sealing and bonding inside and outside, for example joints around windows.

from €13.25 incl. VAT →

Grommets and penetrations

Grommets for cables and pipes, sealing patches for openings and airtight boxes for sockets and downlights.

Sealing patches for openings

AIRSTOP FLEX sealing patches

Strong sealing patches on a roll for quick closing of larger openings, for example the blow-in openings for insulation; numbered consecutively.

from €0.85 incl. VAT →
Sealing patches for openings

TIMBERFLEX sealing patches

Strong wood-coloured sealing patches for quick closing of larger openings, for example the blow-in openings for insulation; numbered consecutively.

from €1.04 incl. VAT →
Sealing patches for openings

AIRSTOP ELASTO sealing patches

Sealing patches on a roll for quick closing of the blow-in openings for insulation.

from €0.83 incl. VAT →
Cable grommet

AIRSTOP D1

Grommet for permanently airtight sealing of cable penetrations.

from €6.46 incl. VAT →
Grommet for two cables

AIRSTOP DD3

Grommet with two openings for permanently airtight sealing of cable penetrations.

from €6.60 incl. VAT →
Grommet for installation pipes

AIRSTOP GD2

Grommet for permanently airtight sealing of installation pipe penetrations.

from €6.91 incl. VAT →
Pipe grommet

AIRSTOP RGD

Grommet for permanently airtight sealing of penetrations of larger pipes.

from €20.22 incl. VAT →
Pleated pipe grommet for roof slopes

AIRSTOP FRGD

Pleated grommet for permanently airtight sealing of pipes that pass through a roof slope with a pitch of up to 45°.

from €40.08 incl. VAT →
Airtight box for sockets

AIRSTOP SDD-2

Allows airtight installation of mounting boxes for sockets and switches in the insulation layer, and can be reopened. The wide adhesive collar is bonded directly to the vapour barrier or OSB.

from €25.56 incl. VAT →
Airtight box for triple mounting boxes

AIRSTOP SDD-3

Allows airtight installation of triple mounting boxes for sockets and switches in the insulation layer. The wide adhesive collar is bonded directly to the vapour barrier or OSB.

from €26.74 incl. VAT →
Airtight box for downlights

AIRSTOP SPOTI

Allows airtight installation of recessed ceiling downlights where the installation space is insufficient. The adhesive collar is bonded directly to the vapour barrier or OSB.

from €18.86 incl. VAT →
Airtight box for downlights with exposed rafters

AIRSTOP SPOTI LIGHT 2

Airtight installation of recessed downlights in exposed roof structures with above-rafter insulation — the box is fitted directly on the vapour barrier.

from €16.72 incl. VAT →
Grommet for a bundle of pipes

AIRSTOP Multi 6 for pipes

Grommet for sealing up to 6 installation pipes with one component — on timber, OSB, MDF, metal and vapour barriers.

from €30.60 incl. VAT →
Grommet for a bundle of cables

AIRSTOP Multi 6 for cables

Grommet for sealing up to 6 cables with one component — for example cable bundles and satellite cables.

from €24.13 incl. VAT →

Plinth, corners and junctions

Butyl and bitumen tapes and liquid waterproofing for sole plates, the plinth and the second water-shedding layer.

Stretchable butyl tape

OMEGA PLASTO

Stretchable butyl tape with a non-woven fabric backing that can be plastered over — for the plinth, corners, pipes and for the second water-shedding layer under the window sill.

from €2.12 / m incl. VAT →
Corner piece

OMEGA PLASTO corner 30/200

Ready-made corner piece for quick forming of the corners of the second water-shedding layer under the window sill.

from €10.68 incl. VAT →
Bitumen rubber tape

AIRSTOP BB

Self-adhesive, permanently elastic bitumen rubber tape, 1.5 mm, for sealing the transition between the sole plate and the concrete slab and for joints and valleys in wood fibre boards and MDF.

from €3.56 / m incl. VAT →
Bitumen rubber tape with non-woven fabric

AIRSTOP VBB

Bitumen rubber tape, 1.5 mm, with a non-woven fabric facing — can be filled over and taped over. For the transition between the sole plate and the concrete slab and for wood fibre boards and MDF.

from €6.73 / m incl. VAT →
Sealing tape for the sole plate

OMEGA DB

Single-sided adhesive, highly stretchable sealing tape, 1.5 mm, for the transition between the sole plate and the concrete slab on the inside — also runs easily over the fixing brackets.

from €3.38 / m incl. VAT →
Aluminium bitumen tape

OMEGA AB

Aluminium tape, 1.5 mm, with a permanently elastic bitumen rubber compound — for repairing and sealing the roof (joints, gutters, metal flashings, pipes) and for connections at the sole plate on the outside.

from €2.34 / m incl. VAT →
Liquid waterproofing

OMEGA POBIT

Ready-to-use water-based elastomer-bitumen waterproofing for seamless sealing around windows and doors, under window sills, at penetrations and for the plinth.

Data and sizes →

Photos and technical data: ISOCELL GmbH & Co KG.

naturheld membranes

A vapour retarder below the insulation (ADB 5) and a vapour-permeable membrane for renovation and as a roofing underlay (LDB 0.02), matched to the naturheld boards.

naturheld membranes and accessories — prices

Gross prices from the naturheld price list, ex warehouse in Bulgaria. Membranes are sold in whole rolls of 75 m².

ProductFormatPackagingPrice incl. VATPrice excl. VAT
Membranes
naturheld LDB 0.02 · code 26001001
roll of 75 m²: €348.30 incl. VAT (€290.25 excl. VAT)
1.50 × 50 mroll 75 m², 20 rolls/pallet€4.64 / m²€3.87 / m²
naturheld ADB 5 · code 26001003
roll of 75 m²: €308.70 incl. VAT (€257.25 excl. VAT)
1.50 × 50 mroll 75 m², 20 rolls/pallet€4.12 / m²€3.43 / m²
naturheld DB 20 · code 26001005
roll of 75 m²: €285.30 incl. VAT (€237.75 excl. VAT)
1.50 × 50 mroll 75 m², 20 rolls/pallet€3.80 / m²€3.17 / m²
naturheld DB Vario · code 26001007
roll of 75 m²: €326.70 incl. VAT (€272.25 excl. VAT)
1.50 × 50 mroll 75 m², 20 rolls/pallet€4.36 / m²€3.63 / m²
Tapes
naturheld FIX 60 · code 2600300160 mm × 25 m10 rolls/carton€26.66 / roll€22.22 / roll
naturheld FIX 100 · code 26003002100 mm × 25 m6 rolls/carton€49.78 / roll€41.48 / roll
naturheld FIX 150 · code 26003003150 mm × 25 m4 rolls/carton€85.56 / roll€71.30 / roll
naturheld FIX 200 · code 26003004200 mm × 25 m2 rolls/carton€158.89 / roll€132.41 / roll
Sealants & primer
naturheld FILL · code 26002001310 ml cartridge12 pcs/carton€17.33 / pc€14.44 / pc
naturheld WANDFIX · code 26002002310 ml cartridge12 pcs/carton€14.00 / pc€11.67 / pc
naturheld PRIMER · code 26002003500 ml spray can12 pcs/carton€17.77 / pc€14.81 / pc
System boards
naturheld window sill wedge 150 · code 26004001150 × 1250 mm10 pcs/carton€27.78 / pc€23.15 / pc
naturheld window sill wedge 200 · code 26004002200 × 1250 mm10 pcs/carton€31.12 / pc€25.93 / pc
naturheld window sill wedge 250 · code 26004003250 × 1250 mm10 pcs/carton€34.44 / pc€28.70 / pc
naturheld window sill wedge 150, with seal · code 26004004150 × 1250 mm10 pcs/carton€34.44 / pc€28.70 / pc
naturheld window sill wedge 200, with seal · code 26004005200 × 1250 mm10 pcs/carton€37.78 / pc€31.48 / pc
naturheld window sill wedge 250, with seal · code 26004006250 × 1250 mm10 pcs/carton€41.11 / pc€34.26 / pc
naturheld reveal board 22 mm · code 2600400722 × 1250 × 600 mm5 pcs/carton€11.40 / pc€9.50 / pc
naturheld reveal board 35 mm · code 2600400835 × 1250 × 600 mm3 pcs/carton€18.00 / pc€15.00 / pc
naturheld plinth insulation board (XPS) · code 2600400940 × 1200 × 325 mm12 pcs/carton€27.78 / pc€23.15 / pc
Plugs
naturheld COOKIE 105 · code 26003005Ø 105 mm144 pcs/carton€2.26 / pc€1.88 / pc
naturheld COOKIE 120 · code 26003006Ø 120 mm144 pcs/carton€2.40 / pc€2.00 / pc
Tools
naturheld centring drill with shank · code 2600401010 mm1 pc€40.00 / pc€33.33 / pc
naturheld hole saw HM 75 · code 26004011Ø 75 mm1 pc€101.11 / pc€84.26 / pc
naturheld hole saw HM 105 · code 26004012Ø 105 mm1 pc€124.44 / pc€103.70 / pc
naturheld hole saw HM 120 · code 26004013Ø 120 mm1 pc€155.56 / pc€129.63 / pc
naturheld core drill HF 106.5 · code 26004014Ø 106.5 mm1 pc€355.56 / pc€296.30 / pc
Dowels
fischer TermoFix 6H-NT 80 · code 260050016 × 80 mmbox of 100€0.85 / pc€0.71 / pc
fischer TermoFix 6H-NT 100 · code 260050026 × 100 mmbox of 100€0.90 / pc€0.75 / pc
fischer TermoFix 6H-NT 120 · code 260050036 × 120 mmbox of 100€1.01 / pc€0.84 / pc
fischer TermoFix 6H-NT 140 · code 260050046 × 140 mmbox of 100€1.12 / pc€0.93 / pc
fischer TermoFix 6H-NT 160 · code 260050056 × 160 mmbox of 100€1.22 / pc€1.02 / pc
fischer TermoFix 6H-NT 180 · code 260050066 × 180 mmbox of 100€1.63 / pc€1.36 / pc
fischer TermoFix 6H-NT 200 · code 260050076 × 200 mmbox of 100€1.85 / pc€1.54 / pc
fischer TermoFix 6H-NT 220 · code 260050086 × 220 mmbox of 100€2.18 / pc€1.82 / pc
fischer TermoFix 6H-NT 240 · code 260050096 × 240 mmbox of 100€2.58 / pc€2.15 / pc
fischer TermoFix 6H-NT 260 · code 260050106 × 260 mmbox of 100€2.83 / pc€2.36 / pc
fischer TermoFix 6H-NT 280 · code 260050116 × 280 mmbox of 100€3.00 / pc€2.50 / pc
fischer TermoZ CS II 8/155 · code 260050128 × 155 mmbox of 100€0.85 / pc€0.71 / pc
fischer TermoZ CS II 8/175 · code 260050138 × 175 mmbox of 100€0.96 / pc€0.80 / pc
fischer TermoZ CS II 8/195 · code 260050148 × 195 mmbox of 100€1.07 / pc€0.89 / pc
fischer TermoZ CS II 8/215 · code 260050158 × 215 mmbox of 100€1.16 / pc€0.97 / pc
fischer TermoZ CS II 8/235 · code 260050168 × 235 mmbox of 100€1.30 / pc€1.08 / pc

Which membrane where?

SituationInsideOutside
New roof, pitch ≥ 15°, tongue and groove board above the raftersAIRSTOP vapour barrier + tapesThe board is the rain-tight underlay; LDB 0.02 optional
New roof, pitch 10–15°AIRSTOP vapour barrier + tapesLDB 0.02 (sd 0.02 m) on top of the board
Roof without a board above the raftersAIRSTOP vapour barrier + tapesLDB 0.02 (sd 0.02 m) over the rafters
CLT wall or roofADB 5 on the CLT, below the insulation + tapesnaturheld board; roof below 15° — LDB 0.02 on top
Renovation from outside, without opening up the inside—LDB 0.02 over and between the rafters + board ≥ 35 mm
Timber frame wallAIRSTOP vapour barrier + tapesnaturheld board (wind barrier)
Masonry wall, external insulation—No membrane needed