# How to Replace the Upper Foam Edge on a Soft-Sided Waterbed
The frame of a soft-sided waterbed is made of stiff foam rather than wood and hidden beneath a mattress cover. While waterbeds are usable for several years more than regular mattresses, the foam frame of a soft-sided waterbed eventually breaks down due to stress. Fortunately, each piece of the outer frame can be replaced independently. The procedure doesn't require draining the mattress bladders.
Instructions
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1
Unzip the mattress cover completely.
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2
Remove all of the mattress bladders and carefully place them on a clean floor or in a bathtub.
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3
Remove both side foam edges and the upper foam edge from inside the mattress liner.
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4
Place the new upper foam edge inside the liner and push it against the upper edge of the liner, then replace the side edges.
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5
Return the mattress bladders to the cavity created by the foam frame. Straighten each bladder within the cavity, then zip the mattress liner back onto the frame.
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