RAD Guard Mildew & Algae Cleaner & Preventer
RAD Guard removes mold, mildew and algae stains from exterior surfaces and keeps them from coming back for 1–2 years. There’s no pressure washing, scrubbing or rinsing. Spray it on and let it work. It’s safe over existing stains, sealers and paints, and contains no bleach, chlorine, acids, sodium hydroxide or phosphates.
Note: RAD Guard is not a wood prep product. To clean and prep wood for staining, use Restore-A-Deck Cleaner and Brightener.
Where to Use It
Stained or sealed decks, fences, siding, outdoor furniture, concrete and other exterior surfaces with mildew or algae buildup.
Ready-to-Use vs. Concentrate
- Ready-to-Use (1 gallon): Pour into a pump sprayer and apply. Covers about 200 sq. ft.
- Concentrate (1 gallon): Mix 1 part RAD Guard with 5 parts water. Makes 5–6 gallons and covers 1,000+ sq. ft. The best value for large decks and whole-house use.
How to Apply
- Make sure the surface is dry. Any paint or stain must be fully cured.
- Pre-wet nearby plants and grass with water.
- Mix if using the concentrate, then pour into a pump sprayer.
- Saturate the affected areas. No scrubbing or rinsing needed.
- Let it work. Stains fade over the following days and weeks as RAD Guard breaks them down, and rain and sun speed up the results.
Maintenance
Reapply every 12–24 months or when new stains appear. For best results, apply right after staining to protect the new finish from mildew and algae.
Frequently Asked Questions
Can I use RAD Guard before staining?
No. It isn’t designed for prep. Clean and brighten the wood first, stain, let it cure, then apply RAD Guard to prevent growth.
Will RAD Guard restore faded or gray wood color?
No. It removes mildew and algae stains, but it won’t restore color lost to UV. That takes restaining.
Will it dull my stain?
No. RAD Guard won’t dull or remove a cured stain.
How long does it keep?
About 1–2 years once opened. Don’t let it freeze.