How much expanding foam for a window or door: working out the cans
How to calculate foam from the opening perimeter and gap size, why the 'up to 70 l' label is a poor basis, and how many cans one or three windows need.
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How to calculate foam from the opening perimeter and gap size, why the 'up to 70 l' label is a poor basis, and how many cans one or three windows need.
Cured foam cannot be fully dissolved, but it can be removed almost without a trace. Five methods and a table for plastic, glass, wood, fabric and skin.
Secondary expansion from 15 to 300%, a cold can, UV and moisture in the joint: why foam crumbles or pushes a frame, and how to fill a joint right.
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