Dry room Yellowing- Marmoleum
What is “drying room yellowing” (also known as “stove yellowing”) and when will it disappear?
“As all linoleum completes its maturing, a temporary and variable natural phenomenon occurs which may give the product a yellow tint. Expose the product to either natural or artificial light to allow this tint to disappear and the true colour of Marmoleum will develop.” Yellowing is related to the natural linseed oil and usually only occurs on lighter colours in blue, grey and greens.
Marmoleum drying room "yellowing" factsheet
Bight mark in Marmoleum
3km runs of Marmoleum mature in large drying rooms in continuous rolls up to 16 metres high. At the top, the linoleum passes over a pole, face inwards, and at the bottom forms a loop, or bight, face outwards.
During the 2-3 week curing process the weight of the material causes the linoleum to mould a little to the pole at the top causing a mark across the width which is always cut out at the factory.
The fold or “bight” at the bottom is however more gentle though sometimes detectable as a slight ridge across the middle of a full roll about 15 cm wide. With modern flexible linoleum formulations, this can usually be stuck down in 2.5 mm or 2.0 mm linoleum using normal adhesive spreading techniques provided the bight mark area is well rolled, firstly across the sheet and then along it until the bight has bonded securely. "bight" marks are not manufacturing defects.
How to fix marmoleum bright mark bubbles