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Old mattress foundation question

10 Sep 2019 13:25 #1 by golgi101
I have an old mattress foundation:Box frame of 2×4s. Has 3in layer foam over cardboard over 1×2" slats 5" apart. I have attached a photo of the underside.
Question: If I remove 3" foam will that reduce sagging in middle of mattress that is sitting on this foundation?It would then be resting on cardboard which may be a moisture problem,no?

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10 Sep 2019 13:43 #2 by Arizona Premium
The best thing you could do is to remove the foam and cardboard and buy 1 x 3 slats to go between each of the 1 x 2 slats. This will reduce the gap between the slats making both the cardboard and foam unnecessary and stronger. Home Depot carries 1 x 3's but you would have to cut them yourself. Nails or drywall screws work good to secure them in place.

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10 Sep 2019 18:04 #3 by golgi101
Thank you,Ken! Although a spring mattress is on it now,if we add the 1x3s will it be suitable for our latex mattress? (with the wavy dunlop topper your previosly recommended,and I purchased,thank you!)

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11 Sep 2019 10:19 #4 by Arizona Premium
Absolutely, you'll never have to worry about it again if you add the extra slats I recommended.

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