The latest in effective weathersealing

Discusses the requirements of a first class weatherseal. Concludes that silicone rubber is the most effective material. Swedish research shows that silicone resists deformation and cracking better than other weathersealing materials, and that a thin wall tubular seal gives the highest resistance to air and water infiltration. Agrement Board tests show that this type of seal reduces air infiltration through a window from more than 40 m3 air/hour to less than 1m3 at a test pressure of 600Pa.