Skip to main content

Browse Projects, find Products,connect with Professionals.

Become a Pro

ISOCELL Airtight Building Envelope Systems

Siegware
Visit Website

Creating an airtight building envelope is essential for improving energy efficiency, thermal comfort and the long-term durability of modern buildings. ISOCELL Airtightness Systems provide a complete sealing solution designed to reduce uncontrolled air leakage, manage moisture and protect the building envelope throughout its service life.

Distributed by Siegware, the ISOCELL range includes premium building wraps, airtight tapes, vapour control membranes, sealants, primers and installation accessories that work together as a fully compatible system. Suitable for residential, commercial and Passive House projects, these solutions help architects, builders and installers achieve high-performance building envelopes while simplifying specification and installation.

By treating airtightness as a complete system rather than individual products, ISOCELL supports healthier indoor environments, improved thermal performance and greater building longevity.

Details
Specifications

Applications

  • Building envelope sealing
  • Window installation
  • Door installation
  • Roof construction
  • Wall construction
  • Façade systems

Suitable Construction Types

  • Timber frame
  • Masonry
  • Steel frame
  • Concrete construction

Suitable Building Types

  • Residential
  • Commercial
  • Passive House
  • High-performance buildings
Scope of use
  • Residential homes
  • Multi-residential developments
  • Commercial buildings
  • Passive House projects
  • Low-energy buildings
  • Timber frame construction
  • Window and door installation
  • Roof and wall assemblies
  • New construction and renovation projects
Features
  • Complete airtight building envelope system
  • Reduces uncontrolled air leakage
  • Improves thermal efficiency and indoor comfort
  • Helps manage moisture and minimise condensation risk
  • Supports energy-efficient and Passive House construction
  • Compatible range of membranes, tapes, sealants and primers
  • Suitable for timber, masonry and steel-framed construction
  • Technical support and product expertise available through Siegware
Variant

Building Wraps & Membranes

High-performance internal and external membranes designed to protect the building envelope while managing vapour movement and weather exposure.

Suitable for:

  • External wall systems
  • Roof assemblies
  • Timber frame construction
  • High-performance façades

Airtight Tapes

A comprehensive range of sealing tapes designed to create durable airtight connections around windows, doors and building junctions.

Includes:

  • Window tapes
  • Membrane tapes
  • Joint sealing tapes
  • Penetration sealing tapes
  • Nail sealing tapes

Sealants & Adhesives

Professional-grade sealants and adhesives that ensure long-lasting airtight and weather-resistant connections across the building envelope.

Suitable for:

  • Membrane installation
  • Window and door sealing
  • Junction sealing
  • General airtight construction

Primers

Surface preparation products designed to improve adhesion and ensure long-term performance across a variety of construction substrates.

Installation Accessories

A range of complementary tools and accessories that support accurate and efficient installation of the complete ISOCELL airtightness system.

Visit Website

About the
Seller

Founded in 2009, we began by supplying Siegenia hardware to Australia’s emerging energy-efficient window market. Over time, our business has evolved to offer a carefully selected range of premium European-engineered hardware and construction consumables for architectural and low-energy building applications.

Today, we work closely with architects, designers, window and door fabricators, and builders across Australia and New Zealand, supporting projects that demand precision, durability, and performance—without compromising timelines. By maintaining significant stock levels in our local warehouse, we help ensure reliable availability and fast turnaround when it matters most.

Our reputation is built on the quality of our products and the strength of our service. With deep industry experience, we provide practical technical support, dependable supply, and solutions informed by European innovation—delivering real, long-term value for our customers.

Verified ArchiPro Member1 year · Since 2025