SIGA
16 Great Queen Street
WC2B 5AH London
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Make your building airtight and windproof

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

Check out the latest technical guide carefully curated by SIGA experts

Weatherproofing and Airtightness for Mass Timber

Looking for a detailed guide to ensuring an air- and weathertight mass timber building?

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Popular products

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.

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Wetguard® 200 SA

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

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Fentrim® 2

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

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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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Video: Build a safe thermal envelope
 

Thermal Insulation: The Ultimate Guide to A Safe Thermal Envelope

Are you an architect or a builder who's finding answers to your building problems concerning "Thermal Insulation"?

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Meet us

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

www.frontale.de

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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.

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How to Properly Seal a Roof Eave Connection 

Discover how to achieve a long-lasting, airtight roof eave connection by following expert advice and using the right product, Rissan® 420 Black.

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By boat to the construction site: The challenge of rebuilding a hut in the middle of the ocean

Discover how SIGA provided specialized waterproofing solutions to protect the iconic Cabane Tchanquée from harsh oceanic weather conditions during its reconstruction.

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Project References

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.

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Springfield Meadows, Great Britain

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

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Landsbankinn, Iceland

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

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Build airtight and save costs

Learn why airtightness is vital for delivering NZEB and how airtightness makes it easier to meet NZEB

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Jobs

Become part of the SIGA team. Be inspired by our corporate culture.

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