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newfiesig · 12-27-2025, 10:34 PM

When searching online to see if PSA slabs are waterproof, I keep reading that they are not waterproof, but water resistant.

I have experimented with several cheap slabs to see if I can get water inside. I've submerged in water (with something weighing them down), scrubbed the seams with soaked cloths, etc. I have not been able to get even a drop of water inside around 10 random slabs I've tried on.

I've also watched a number of YouTube videos without anywhere getting in the slab.

Has anyone ever had a (non-compromised with a crack, etc.) slab take on water? Tracking that ultrasonic welding can have faults, but I personally haven't seen it (like issues I have seen with SGC).

12-27-2025, 10:34 PM	#1
newfiesig Member Join Date: Apr 2023 Posts: 221	PSA Slabs; waterproof...? When searching online to see if PSA slabs are waterproof, I keep reading that they are not waterproof, but water resistant. I have experimented with several cheap slabs to see if I can get water inside. I've submerged in water (with something weighing them down), scrubbed the seams with soaked cloths, etc. I have not been able to get even a drop of water inside around 10 random slabs I've tried on. I've also watched a number of YouTube videos without anywhere getting in the slab. Has anyone ever had a (non-compromised with a crack, etc.) slab take on water? Tracking that ultrasonic welding can have faults, but I personally haven't seen it (like issues I have seen with SGC).