11:18AM | 08/12/06
Member Since: 08/10/06
1 lifetime posts
Does anyone have any idea what is eating at my hardy plank siding?

It only appears to be happening on my front porch.

As you can see from the attached pictures, I have this white saw dust looking stuff (flakes) coming from between the two planks.

The house was recently painted and all holes were painted over. Now it appears that something has eaten through the new paint and the flakes have reappeared.

The stuff even reappears after I hose down my front porch with water.

Does anyone know if Hardy Plank attracts termites?

Thanks in advance,


2743 what is eating my ha


07:03PM | 02/24/07
Member Since: 02/23/07
2 lifetime posts
Did you paint new hardy plank or had it been previously painted? It sounds like your problem is efflorescense. The alkalinity of the cement is extremely high, causing salt-like deposits to rise to the surface of your paint. Go to your local Sherwin-Williams store and buy a product call Loxon Masonry Primer and a Loxon Masonry topcoat - don't let them give you anything else - and this will block your efflorescense.


07:06PM | 02/24/07
Member Since: 02/23/07
2 lifetime posts
if you want to test this, lick your finger, rub some of the white stuff off and taste it. If it tastes salty, it's efflorescense. If it's something that kills you, sorry. just kidding on the last part.
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