13/07/2026
Sacrificed a perfectly good bubly for this demo 🫡
On unsealed wood, it disappears straight into the boards. That’s exactly what happens every time it rains.
The moisture sits inside the fibres, feeds mould and rot, and swells the boards until they crack and split.
On the sealed side, it beads up and rolls right off. Nothing gets in.
And water is only half the battle. UV breaks down the surface and turns the wood grey, so a proper penetrating sealer protects against both at once.
If your deck drinks water like the first board did, it’s unprotected and quietly getting worse every season.
Most people wait until the boards are grey and splintering. By then it costs way more to bring back.
Seal it while the wood is still healthy and it stays that way for years.