Stains & Finishes
Deck Prep
Thompson's WaterSeal
$8-$22/galDeck Cleaner for Deep Wood Surface Preparation
Deck cleaner is a concentrated cleaning solution removing dirt mildew algae grayed wood fibers and old finish residue from wood deck surfaces. This essential first step opens wood grain creating a clean receptive surface for stain or sealer application.
Key Features
- Removes mildew and algae
- Strips grayed wood fibers
- Prepares surface for staining
- Concentrated formula
- Plant safe when diluted
- Works with pressure washer or brush
Specifications
Coverage: 100-250 sq ft/gal concentrated | Contact: 10-15 min | Apply: pump sprayer brush or pressure washer | Rinse: pressure washer or hose
Best For
Annual deck maintenance pre-stain preparation removing mildew and algae growth and stripping grayed surface fibers.
Compatible Materials
Pressure-treated pine
Cedar
Redwood
Composite decking
Vinyl fencing
Concrete pavers
Pros & Cons
Pros
- ✓ Restores weathered wood appearance
- ✓ Essential for stain adhesion
- ✓ Removes stubborn mildew
- ✓ Affordable maintenance product
- ✓ Easy application
Cons
- ✗ Requires physical scrubbing
- ✗ Must follow with brightener
- ✗ Can damage plants if not diluted
- ✗ Alkaline can darken wood temporarily
- ✗ Messy application
Installation Tips
Wet plants and cover delicate landscaping. Apply cleaner to dry wood with pump sprayer. Allow 10-15 min dwell. Scrub with stiff brush working with grain. Rinse with pressure washer at 1500-2000 PSI or garden hose. Follow with deck brightener.
Frequently Asked Questions
Annually before staining. High-traffic decks twice per year.
Not required but recommended. Stiff brush and hose works with more effort.
Cleaner removes surface dirt. Use wood stripper for old stain removal.