With the sponge rubber sealing around the hatch covers, they lift up above the deck. This makes the 8 hatch cover holders angle upward. Should I add a spacer washer on the deck to square off the hatch cover holders or will the sponge flatten out over time.
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RE: Hatch covers do nlot lie flat
» Submitted by hspira - Mon, 5/9/16 » 9:43 PM
i assume from your description you have a boat with what are supposed to be 'flush' hatch covers....with the four toggles that hold each one in place.
the short answer is yes. the foam/sponge rubber will flatten over time. but initially it can be a real bear to get them closed when the boat is fresh/new.
no need to add spacer washers....but you may need to give it an evening to let the sponge finally get compressed.