Vinyl Flooring Expansion Gap. My installation area is roughly L shaped and the long runs will be on the order of 40 - 45 feet. If you use the new Karndean click system you need expansion gap but small not like laminate flooring.

Is an expansion gap needed for vinyl flooring. Just enough to absorb the smaller amount of expansion a bonded vinyl floor. The instructions say to leave a 18 perimeter gap but do not say anything about an expansion gap at a certain maximum run length or between rooms.
You just leave 14 inch between the wall and planks.
An expansion gap is essential when it comes to laminate flooring installation. Vinyl is susceptible to temperature changes in its ambient environment which will cause the vinyl flooring to expand and contract with normal hot and cold fluctuations. Yes an expansion gap is needed for vinyl flooring to allow for expansion or contracting due to temperature changes. All Vinyl Plank Floor Types.