Building rig
I too have a 2001 Haulmark 7' x 14' tandem axle trailer with side door and double swing doors on rear. Here's how I've got mine setup.
First, I went to auto parts store and bought some of that roll-on truck bed liner to coat the entire floor area and 6" up all the way around on walls. This will keep alot of water/chemicals from warping wood floor too fast. Then bought a rubber 1 piece truck bed-type mat to cover the entire floor area (2nd line of defense). Looked into doing the spray on truck bed liner (Rhino liner) but they wanted $800+ just to spray floor area. Painted walls with white exterior (washable) paint. Makes everything brighter inside w/ lights on.
Tuff 3000 psi 5 gpm skid w/ horizontal burner sits toward front of trailer facing end-to-end (the engine faces side door). Used metal duct work to form a removable "chimney" which directs the exhaust out the side door. I exhaust mine out the side door since I don't want to alter the structure of my trailer (i.e. roof, side wall, etc) for a couple of reasons: debris getting into burner coils, rain and snow, etc.
I haven't routed my engine exhaust yet, but plan to take muffler off engine, and form a piece of pipe to extend exhaust thru bottom of trailer floor then reattach the muffler under the trailer (your structural floor beams will protect the muffler). Be sure to use some type of heat shielding on plywood floor and around pipe so you don't start a fire.
Behind that have a 500 gal water tank (plan to reduce to about 250 - 300 gal) secured with 10,000 lb straps.
Behind that have 2 Cox Reels (150' 3/8" hi pressure hose) one in front of other with 2' jumper hoses and female quick connects attached.
Have run a 12' hi pressure hose (w/ male quick connect attached) from skid back to reels. This allows for adding more hose from other reel, another pressure washer, as backup if primary reel or hose breaks on job, or can run shorter hoses for straight from washer discharge for smaller jobs or maintenance (hate having to unreel 100'+ for maintenance only).
Next to hi pressure reels have Cox Reel that holds 200' of 3/4" low pressure hose. Have a 2' jumper hose off it w/ standard garden hose screw thread hooked to 12' 3/4" low pressure hose going into intake of washer.
Can't take credit for this design since I met a washer in the Detroit area w/ a 7'x16' set up this way. I took alot of pictures of his and have set mine up the same way. Really works well. Will take pictures and post when done.
Any questions, you can email me at
divers_son1@hotmail.com or call (952) 292-2287. Good luck.
Tim
