Conpreseal 3V BG1

CONPRESEAL 3V BG1 is a three-level expanding foam sealing tape engineered for the perimeter joint between a window or door frame and the structural opening.

What it does

The pre-compressed PU foam with moisture-adapting membranes expands in the joint to fill irregular gaps and create three integrated zones in a single product: airtight on the warm side, thermally and acoustically insulating in the middle, and watertight on the weather side. Variable μ-value (7–44) lets the joint dry to either side year-round, while the outer layer holds back driving rain up to 1050 Pa.

When and where to use it

• Window and door perimeter joints in new build and retrofit
• Wood-frame, prefab, masonry, and concrete construction
• Passive House projects requiring high airtightness with vapour openness

Key benefits

• Airtightness well below DIN 4108-2 requirements
• 1050 Pa rain resistance, weather and UV resistant
• EC1 PLUS Ecolabel — no VOCs
• Compensates for component movement from temperature changes
• One product replaces separate vapour barrier, foam, and weather-seal

Format

64 mm width, 14.1 m length, suitable for joint widths 6–15 mm.