shingle stain การใช้

To prevent a recurrence buy a shingle stain that has mildewcide in it, as well as a wood preservative.
A : Application of two coats of shingle stain is definitely advisable _ for appearance sake, as well as for preserving the shingles.
Your best bet now is to have the wood professionally cleaned by power washing, then apply two coats of a light colored, semitransparent, pigmented shingle stain.
There a number of shingle stains on the market that also contain a wood preservative and any of these, if applied periodically, will help preserve the shingles and prevent such problems.
A : You don't say how long ago the stain was applied, but as a rule shingle stains must be renewed after three or four years if you want to maintain a constant appearance.