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Old tent care: Do I need to re-tape seams?

I have an REI Morph tent that I left in a southern garage a little too long, and the waterproofing became gummy and the waterproofing tape has separated. I am washing it to get the gummy residue off and know I need to re-waterproof it afterwards. Question is, do I need to tape the seams again? Or will a spray-on or wash-in water proofing product be sufficient? 

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You will probably need to re-tape or otherwise seam seal it using a brush applied seam sealer.  Seam sealing blocks the holes caused by sewing.  It is unlikely that any spray on product will be effective at doing the same

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Seam seal on outside with homemade sealant (mix clear silicone with paint thinner into a slurry) (brush on)

spray the body with silicone (example like Walmart sells)

test in backyard with garden hose

REI Member Since 1979 YouTube.com/philreedshikes
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