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Sealant for the building industry PASSIVHAUS AIRTIGHT
for buildingconstructionwatertight

Sealant for the building industry - PASSIVHAUS AIRTIGHT - Intelligent Membranes - for building / construction / watertight
Sealant for the building industry - PASSIVHAUS AIRTIGHT - Intelligent Membranes - for building / construction / watertight
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Sealant for the building industry - PASSIVHAUS AIRTIGHT - Intelligent Membranes - for building / construction / watertight - image - 3
Sealant for the building industry - PASSIVHAUS AIRTIGHT - Intelligent Membranes - for building / construction / watertight - image - 4
Sealant for the building industry - PASSIVHAUS AIRTIGHT - Intelligent Membranes - for building / construction / watertight - image - 5
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Characteristics

Domain
construction, for the building industry, for building
Other characteristics
watertight

Description

Overview

Passive Purple sealant tubes – for precise airtight sealing of gaps in the building fabric

Key features and benefits
  • Efficient airsealing: Seals gaps, cracks and service penetrations in the building envelope to reduce air leakage and improve thermal performance.
  • Fast, controlled application: Supplied as 600 ml sausage tubes for use with standard sausage/caulking guns for precise dispensing and a smooth finish.
  • Wide substrate compatibility: Bonds to timber, concrete, brick, plasterboard, CLT and common construction materials.
  • Durable and flexible: Forms a long-lasting, elastic airtight barrier that accommodates building movement.
  • Supports energy efficiency: Reduces heating/cooling losses and improves occupant comfort.


Why choose Passive Purple in sealant tubes?
  • Precision application: Targeted sealing for small gaps and tricky junctions.
  • Retrofit and new-build ready: Practical for both renovation and new construction airtightness works.
  • Proven performance: Same formulation as the Passive Purple liquid airtight membrane with verified properties.


Applications / Typical uses
  • Joist ends and straight connection joints (joist seal).
  • Sealing around window and door perimeters.
  • Sealing service penetrations and small gaps in walls, floors and ceilings.
  • Corner joints in OSB, blockwork junctions and similar details.


Key points (product detail)
  • Format: 600 ml sausage tube for sausage/caulking gun application.
  • Pack options: single units or boxes (example: box of 12).
  • Coverage: approximately 6 linear metres per 600 ml sausage (applied as directed).
  • Fast application using a sausage gun; forms an airtight membrane at joints.


Tested & Certified — Summary
  • Passive House Institute airtightness: Class A — 0.02 m³/h·m² @ 50 Pa (EN 12114).
  • Air barrier material performance: 0.02 L/s·m² at 75 Pa (ASTM E2178 · ICC-ES ESR-4715).
  • Indoor emissions: French A+ rating & Finnish M1 class (very low VOCs, EN 16516 / RTS).
  • Reaction to fire: ASTM E84 Class A; Euroclass C-s1,d0 (EN 13501-1) — B-s1,d0 when used with specified FRED system.
  • Watertightness & vapour control: EN 14891; Sd ~0.8–40 m (EN ISO 12572).
  • Adhesion (EN ISO 4624): steel 2.7 N/mm², CLT 1.83 N/mm², gypsum 1.6 N/mm², brick 1.5 N/mm².
  • Mould resistance: 10/10 (ASTM D3273). EPD (EN 15804). ICC-ES ESR-4715, Passivhaus certified, BBA approved.


Related guides and installation notes
  • Apply with a sausage/caulking gun into prepared gaps and joints; follow substrate preparation guidance.
  • Refer to technical data sheet, installation guide and SDS for coverage, handling and PPE.


Technical specifications
  • Product format: 600 ml sausage tube.
  • Coverage: ~6 linear metres per 600 ml sausage.
  • Available pack options: single or box (e.g. box of 12).
  • Airtightness: 0.02 m³/h·m² @ 50 Pa (EN 12114).
  • Air barrier performance: 0.02 L/s·m² @ 75 Pa (ASTM E2178 / ICC-ES ESR-4715).
  • Indoor emissions: A+ (FR) & M1 (FI).
  • Reaction to fire: ASTM E84 Class A; EN 13501-1 Euroclass C-s1,d0 (B-s1,d0 with FRED where noted).
  • Vapour control: Sd ~0.8–40 m (EN ISO 12572).
  • Adhesion (EN ISO 4624): steel 2.7; CLT 1.83; gypsum 1.6; brick 1.5 N/mm².

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.