Ray Thompson Article in FCI

[eaadams]

If all vinyl shrinks then you should compression fit every seam, no?

Many vinyl manufacturers call for gaping high quality vinyl the width of a credit card before heat welding. When we later get a complaint of a seam bulging on both sides of a seam it is usually because the vinyl grew, not shrink. The same goes for most recycled rubber floors, when an installer compression fits those (like you would normal rubber) you also get seam bulging.