How to Build an Affordable Soft Wash System From Scratch
Building your own soft wash system doesn't have to cost a fortune. With the right components and a little know-how, contractors can put together a fully functional, professional-grade soft wash rig at a fraction of the cost of pre-built systems. Here's exactly how to do it.
What Is a Soft Wash System?
A soft wash system uses low pressure and high-concentration chemicals to clean surfaces like roofs, siding, and fences without the risk of damage from high-pressure washing. It's an essential service for any serious pressure washing contractor.
Core Components You Need
1. 12V Soft Wash Pump
The heart of your system. A 12V diaphragm pump is the most affordable entry point for soft washing. Browse our Soft-Wash Machines collection for reliable options that won't break the bank.
2. Chemical Tank
A 35–100 gallon poly tank works great for most rigs. Source locally from farm supply stores for the best prices.
3. Soft Wash Hose
You need hose rated for chemical use — standard pressure washing hose won't cut it. Check out our Softwash Hose Roll 200' x 5/8" 300 PSI — purpose-built for soft wash applications at an affordable price.
4. Spray Gun & Nozzles
A quality spray gun rated for your flow is essential. Our Spray Guns collection and Nozzles collection have everything you need to complete your setup.
5. Chemical Injector
For downstream injection setups, check out our Chemical Injectors collection including the GP Fixed Injector (3-5gpm) and GP Fixed Injector (2-3gpm).
6. Fittings & Connections
Don't overlook quick connects and ball valves — browse our Quick Connect Fittings and Ball Valves collections to complete your plumbing.
Estimated Budget Build Cost
- 12V pump: $150–$300
- Tank: $80–$200
- Hose: $60–$120
- Gun, nozzles, fittings: $50–$100
- Total: $340–$720 vs. $1,500+ for pre-built systems
Pro Tips for Keeping Costs Down
- Buy components individually rather than kits — you pay a premium for bundling
- Source your tank locally to avoid shipping costs
- Use our Parts collection for replacement components to extend the life of your rig
Final Thoughts
A DIY soft wash system built from quality affordable components can save you $800–$1,200 upfront and give you full control over your setup. Start with our Soft-Wash Machines and build from there.