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Thompson’s WaterSeal can be applied with a pump sprayer when the label for the exact product permits it. Use a clean sprayer reserved for coatings, choose an adjustable nozzle and clean it immediately after use so residue does not ruin the next application.
| # | Product | Price | Where to buy |
|---|---|---|---|
| 1 | Chapin 1949 3.5-Gallon Tri-Poxy Sprayer | $50–$80 | Amazon · eBay |
| 2 | Chapin 19149 3.5-Gallon Industrial Sprayer | $50–$90 | Amazon |
| 3 | Chapin 20075 1-Gallon Poly Sprayer | $15–$30 | Amazon · eBay |
| 4 | Smith Performance Sprayers NL400 | $100–$160 | Amazon · eBay |
| 5 | Smith Performance Sprayers R200 | $60–$100 | Amazon · eBay |
| 6 | Solo 425 2-Gallon Sprayer | $35–$60 | Amazon · eBay |
| 7 | Solo 418 One-Hand Sprayer | $15–$30 | Amazon · eBay |
| 8 | Hudson Bak-Pak 4-Gallon Sprayer | $90–$150 | Amazon · eBay |
| 9 | Chapin 63985 Backpack Sprayer | $90–$150 | Amazon · eBay |
| 10 | Field King 190328 Backpack Sprayer | $90–$140 | Amazon · eBay |
The picks, in detail
Chapin 1949 3.5-Gallon Tri-Poxy Sprayer
Chemical-resistant 3.5-gallon pump sprayer suited to larger deck projects.
- 3.5-gallon tank
- Tri-Poxy tank
- capacity
- durable tank
- heavy when full
Chapin 19149 3.5-Gallon Industrial Sprayer
Large manual sprayer with industrial-style components.
- 3.5-gallon tank
- manual pump
- capacity
- common parts
- manual pumping
Chapin 20075 1-Gallon Poly Sprayer
Compact one-gallon choice for fences, steps and small repairs.
- 1-gallon tank
- adjustable nozzle
- light
- inexpensive
- frequent refills
Smith Performance Sprayers NL400
Four-gallon professional pump sprayer for larger coating jobs.
- 4-gallon tank
- professional line
- capacity
- serviceable
- price
Smith Performance Sprayers R200
Two-gallon sprayer for medium-size deck and fence work.
- 2-gallon tank
- professional line
- manageable size
- build quality
- manual pumping
Solo 425 2-Gallon Sprayer
Two-gallon manual sprayer with a commercial-style design.
- 2-gallon tank
- manual pump
- manageable
- widely available
- smaller capacity
Solo 418 One-Hand Sprayer
Small handheld sprayer for touch-ups and narrow sections.
- handheld
- adjustable nozzle
- compact
- simple
- small volume
Hudson Bak-Pak 4-Gallon Sprayer
Backpack-style option for large fences and long perimeter work.
- 4-gallon tank
- backpack straps
- capacity
- less carrying
- more cleaning
Chapin 63985 Backpack Sprayer
Backpack pump sprayer with capacity for bigger exterior projects.
- backpack design
- manual pump
- coverage
- mobility
- bulk
Field King 190328 Backpack Sprayer
Four-gallon backpack sprayer with a pump handle designed for extended use.
- 4-gallon tank
- backpack straps
- large jobs
- comfort
- storage size
Buying tips
- Read the WaterSeal label for the exact formula before spraying.
- Strain material if the product instructions require it, and test spray pattern on cardboard first.
As an Amazon Associate and eBay Partner, toptenpick.com earns from qualifying purchases. Prices and availability are subject to change.