Make your building airtight and windproof

We support architects, builders and installers to build energy-efficient buildings.

Weatherproofing and Airtightness for Mass Timber

Discover expert guidance on achieving air- and weathertight mass timber buildings—efficient, durable, and ready for the future.

Airtightness Guide Aligned with RIBA Stages

This guide helps UK architects and specifiers plan airtightness at every RIBA stage – from early design through to site execution – ensuring performance, compliance, and buildability.

Design and build energy-efficient buildings with clarity

This guide explores how airtightness supports the path to Nearly Zero Energy Buildings (NZEB) — a key standard across many regions aiming for low operational emissions, high comfort, and long-term cost

Connect with us at these events

Passivhaus conference, Belfast10/7/2025, 12:00 am - 10/8/2025, 12:00 am

Belfast, Northern Ireland

ukphc.org.uk

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ZAK World of Facades, London11/5/2025, 12:00 am - 11/5/2025, 12:00 am

London, England

zakworldoffacades.com

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Fensterbau Frontale, Nuremberg3/24/2026, 12:00 am - 3/27/2026, 12:00 am

Nuremberg, Germany

www.frontale.de

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Trestard^® 420 black FR

The fire rated and fully self-adhesive tape is especially suitable for indoor and outdoor connections with windows and door frames to seal joints in solid and metal structures.

Wetguard^® 200 SA

Diffusion open and robust full-surface self-adhesive membrane for reliable moisture protection of timber floors during the construction phase.

Fentrim^® 2

Plaster-compatible, pre-folded adhesive tape for outdoor connection with windows and doors, resistant to driving rain.

Find your solution for an airtight and weatherproof building envelope

Products in residential buildings

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Products in commercial buildings

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Products in residential buildings

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Products in commercial buildings

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Thermal Insulation: The Ultimate Guide to A Safe Thermal Envelope

Learn what makes a thermal envelope safe, efficient and future-proof—from vapour control to airtight sealing.

Recent SIGA blog posts

Clean solution for penetrations, cables and ducts

SIGA’s Fentrim^® grommets provide a reliable solution for sealing penetrations in the building envelope, ensuring an airtight and windproof seal around cables, pipes, and ducts.

Weather protection on-site: plan it right from the start

When the weather matters: Why smart weather protection is essential on any construction site.

As unique as you: We make what you need

Standard just doesn’t always cut it. With Customer Specific Production (CSP), SIGA gives you exactly what you need – like in the timber construction project Feuerfalter by Künzli Davos AG in Köniz.

Bridgewater Wharf, Great Britain

Luxurious high-rise buildings were built on the River Irwell in Manchester. A robust window sealing system had to be found.

Springfield Meadows, Great Britain

Greencore Constructions plans buildings for a sustainable lifestyle. 25 zero-emission buildings are being built in Southmoor.

Landsbankinn, Iceland

The new headquarters of the largest Icelandic bank is inspired by nature.

Jobs

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Make your building airtight and windproof

Achieve smarter planning and building with SIGA know-how

Weatherproofing and Airtightness for Mass Timber

Airtightness Guide Aligned with RIBA Stages

Design and build energy-efficient buildings with clarity

Connect with us at these events