Willseal 600 - The joint sealing tape o
	Weatherproof, breathable joints
	JOINT SEALING SYSTEMS o Joints in the fabric of a building envelope are the inevitable consequence of the process of construction. All building materials suffer dimensional changes during their lifetime as a result of induced or inherent factors. Inherent cyclic expansion and contraction caused by changing temperature and moisture conditions can place significant strain on the interface between structural elements and the accompanying joint sealing system. All joint sealing systems must be capable of fulfilling the following requirements to avoid becoming the weak link in the building envelope: accomodate cyclic thermal / moisture movements be compatible with other materials be resistant to rain, wind, sun, heat and cold be user friendly in their application be aesthetically complementary have the same life span as adjacent material   ILLBRUCK JOINT SEALING TECHNIQUE o With so much expected of the joint sealant, careful selection is needed to ensure all these criteria are satisfied. illbruck's worldwide experience and its determination to prduce only the highest quality products is demonstrated by over 30 years usage in the world's harshest climates. Timber frame walls   CHALLENGING TRADITION o Prevailing opinion believes that brickwork expansion joints or concrete panel construction joints be sealed as tight as possible, even hermetically sealed. At first glance this seems reasonable and is usually achieved by a material which spans across the joint adhering to the appropriate joint flanks. Setting aside the problems of cleaning, priming etc. required to achieve a consistent level of performance and durability, the question must be asked: what additional benefit is being offered by these hermetic seals in what is otherwise a permeable / breathable structure? o