Big Wash Self Service
Car & Truck Wash
COIN OPERATED 24/7 SELF SERVICE WASH
19540 Clay Rd. Katy, TX 77449
Our Services and Mission - Your Satisfaction is our Mission!
You put your car through a lot, so why not put it through a custom car wash? Big Wash is a premier car wash company that serves the greater Katy, Houston and Cypress area. You choose how to clean your car inside and out, from top to bottom. Clean your car the way you want it done with the gentlest, safest and most effective system for protecting your investment in the vehicle that you drive.
Keys to Protecting Your Investment
Here in our area, we understand the problems that bad weather can create because airborne contaminants include corrosive particles carried by rain and fog. Also damaging are sand and gravel that soak into the road asphalt and get flushed to the surface by rain. We recommend that drivers in our area keep these tips in mind:
- Keep your vehicle in the garage whenever possible to avoid exposure to pollutants.
- Also damaging are bugs, tree sap, pollen, and bird droppings.
- You need to wash your car promptly after it rains because the pollution delivered in the drops of water can chemically damage the paint and clear coat layer.
The Finish is in the Shine
Exposure to road oils, sun rays, bugs, tree sap, bird droppings, and other pollutants in the environment in our area deteriorate automotive finishes. The best way to help prevent permanent damage is with regular washing. At Big Wash, we utilize the most effective cleaning materials in the industry to remove dirt safely while protecting the finish and enhancing the shine.
We Accept All Major Credits Cards!
COIN OPERATED 24/7 SELF SERVICE WASH
- CHOOSE THE WASH YOU NEED - TOUCHLESS OR BRUSH
- QUICK SPOT WASH - Bugs -Tree Sap - Bird Drops
- QUICK RINSE OFF - Tree Pollen
- CLEAN THE PLACES THE AUTOMATIC WASH MISSED
- COMPLETE WASH - REACH EVERY NOOK & CRANNY
LARGE VEHICLE SELF SERVICE WASH
- TRACTOR TRUCKS
- DUMP TRUCKS
- BUSES & RVs
- TRAVEL TRAILERS
MUDDY & DIRTY VEHICLES WELCOME
- PLEASE USE THE TRUCK WASH BAYS
- SPECIAL VEHICLES - ATV - MOTORCYCLE- DIRT BIKES - TRAILER
CAR, SUV, LIGHT TRUCKS
- PLEASE USE THE MUD FREE WASH BAYS
- MARKED WITH 7 FT CLEARANCE BARS
Our Mission
Big Wash is committed to your 100 percent satisfaction. We strive to supply the highest-quality self service car wash services. Big Wash provides a clean and well lighted self service wash where everything works 24/7.
CAR - SUV - LIGHT TRUCK - CAMPER TRAILER - BOAT up to 7' clearance
- An inexpensive way to clean your car - 75¢ Start up
- Clean what needs cleaning - engine - wheels - underside - body
- Customize your wash - for customers who prefer to do it themselves
- Expensive Custom vehicles - avoid automatic rotating brush damage
LARGE VEHICLES - TRUCK - DUMP TRUCK - BUS - RV up to 13½' clearance
- Vehicles too large or too unusual for automated washes
- Wash off the dirt and mud at Big Wash
- Wash every nook & cranny
- 30' Double wide bay - Wash both sides at the same time
- Bring a ladder and wash the roof of your RV or trailer
SPECIAL VEHICLES - ATV - MOTORCYCLE - DIRT BIKE - BOAT - TRAILER
- Clean every curve & angle you can reach
- Dirt & Mud is OK at Big Wash
- Use Tire & Wheel cleaner to cut the grease and restore the shine
CASH & CREDIT CARD PAYMENT
- Quarter Change Machine exchanges $1, $5, $10, & $20 Bills
- Token Machine accepts Credit Cards and $5, $10, & $20 Bills
CAR, SUV, LIGHT TRUCK - CAMPER TRAILER - BOAT
LARGE VEHICLE SELF SERVICE WASH
Big Wash Instructions
-
Self-Service Car Washing Instructions
+Big Wash wants you to get the most value for your money. These instructions will help you optimize your self service wash and vacuum usage. A cost effective self service wash requires a plan and constant movement to get the most effective service from the time you purchase.ˇ
TIP Before you deposit any coins -- hold the spray gun, foam brush, or foamy wax gun in your hand - select the service you want on the control panel. Quickly deposit the coins {using $1 tokens works faster than quarters}.
TIP Even better have a partner deposit the coins after you get in position. A partner can deposit the minimum amount to start the Wash Bay, then insert coins one at a time until you finish or want to pause.
TIP Begin at the control panel and work around the car. Then switch to the next service on the control panel when you circle back to your starting position at the control panel. Even better, have your partner select the next service on the control panel.
STEP 1 Begin with the low pressure TIRE & WHEEL CLEANER. This low pressure service will take up to 15 seconds to begin flowing. Spray the TIRE & WHEEL CLEANER on the chrome, rubber, vinyl, tires, and rims. Try not to wash off the TIRE & WHEEL CLEANER; it needs some time to work on grease , brake dust, and road film.
TIP Switch from TIRE & WHEEL CLEANER to PRESOAK as you approach the last wheel. The PRESOAK will force the remaining TIRE & WHEEL CLEANER out of the hose while you spray the last wheel, then move to the roof before the PRESOAK begins to flow.
STEP 2 Switch to the medium pressure PRESOAK {BUG REMOVER}. Wet the entire car, apply it from top down. Start on the roof and move down to the rims and tires. The Presoak needs some time to soak and loosen the dirt and bugs.
TIP Prepare the foam brush by spraying the foam brush in its holder to wash out any dirt particles from a previous use.
STEP 3Switch to FOAM BRUSH service first, then lift the brush and wand out of its holder. Hook the spray gun over the foam brush holder; you will change again on the next circle around the car. Work around the car using the Foam Brush to free the dirt and road film.
TIP The foam keeps dirt and debris from collecting in the brush. Using the brush dry, without the foam, may scratch your car's finish.
TIP Hang up the foam brush and hold the high pressure gun in you hand before switching to high pressure SOAP service. The gun will spray and snake on the ground if it is not held firmly.
STEP 4Hold the high pressure gun, then switch to high pressure SOAP. Circle the car, washing from top down to remove any dirt or bugs still adhering to the car.
STEP 5Switch to medium pressure CLEAR COAT SPRAY WAX (or high pressure RINSE) and wash off the remaining soap. It may take two circles around the car to wash off all soap.
---------- OPTIONAL FOAMY WAX APPLICATION ----------
STEP 6Switch to FOAMY WAX, then return the high pressure gun to its holder, and remove the foamy wax gun from its holder. Spread lines of foamy wax over the car in a zig zag pattern.
TIP The foamy wax works best when it is spread evenly over the car with a towel. Let the timer run down to zero, then use a towel to spread the foamy wax.
STEP 7Switch to medium pressure CLEAR COAT SPRAY WAX and wash off the remaining foamy wax. It may take two circles around the car to wash off all foamy wax.
---------- OPTIONAL SPOT FREE FINISH ----------
STEP 8Switch to low pressure SPOT FREE RINSE. This low pressure service will take up to 15 seconds to begin flowing. This reverse osmosis mineral free water will dry without leaving mineral spots on your car. A small amount of SPOT FREE WATER will wash off the disolved minerals in the softened water that can leave mineral spots.
---------- PLEASE RETURN ALL HANDLES AND GUNS TO THEIR HOLOERS ----------
---------- HANGING HOSES CAN CATCH ON AND DAMAGE YOUR CAR ----------
TIP Drying the car with lint free towels or a shamee will also prevent mineral spots. Please move your car to a covered vacuum island and dry it there. That will allow the next customer to use the Wash Bay.
-
Engine Washing Instructions
+TIP WARNING! Only Low pressure and medium pressure sprays should be used on gasoline engines. High pressure spray can short out spark plug wires and prevent an engine restart. The engine should be left running while cleaning, but do not spray water into the engine air filter . If the engine falters, stop the cleaning, and rev the engine to restore smooth running. Even if the engine stops, the heat will help to evaporate the moisture. Try a restart in a few minutes.
TIP CAUTION! High pressure SOAP or RINSE can strip the insulation off of electrical wiring if the nozzle is held too close to the wires. It will also blow the grease out of suspension ball joints, or force water into the suspension ball joints. The water can penetrate electrical components, and the water can cause expensive damage to computer components. The same precautions apply to Diesel engines. Even though diesels do not have spark wires, the electrical wiring and computer components are still subject to damage from high pressure water spray. High pressure services are not recommended for engine cleaning or suspension cleaning.
TIP Apply Engine Degreaser (purchased at an auto supply store) prior to washing.
Begin with TIRE & WHEEL CLEANER. It is the strongest cleaning solution at Big Wash. Try not to spray the spark plug wires, the distributor, or electrical wiring and component boxes at any time. The TIRE & WHEEL CLEANER is most effective when it is allowed to penetrate and work on oil and grease. Multiple applications also help.
The TIRE & WHEEL CLEANER can be flushed off of the engine with SPOT FREE WATER. If a more thorough cleaning is desired, spray the engine again with TIRE & WHEEL CLEANER, then use medium pressure PRESOAK to penetrate and remove stubborn grease and dirt deoposits.
-
Vacuum Cleaner Instructions
+Before you deposit any coins:
--- VACUUMING - Position the vacuum hose inside the car or hold the nozzle in your hand.
--- FRAGRANCE - Lay out the dispenser gun hose - select the fragrance service - also select the scent you want on the control panel - hold the gun and be prepared to press the spray button on the side of the gun.
---- SHAMPOO & SPOT FREE - Lay out the brush hose - clear the areas to be cleaned - position floormats where they can be cleaned - select the carpet cleaning service on the control panel - hold the brush and be prepared to press the selector switch on the brush. The vacuum option can be used to dry the carpet or upholstery.
---- Quickly deposit the coins {using $1 tokens works faster than quarters}. Begin working as soon as the vacuum starts.
-
Vending Machine Instructions
+---- The vending machines only accept quarters. Tokens will not fit through the coin opening. Please do not try to use nickles, dimes, pennies, foreigh coins, or other tokens; they will not trick the machine, instead they will jam the machine and inconvenience other customers.
---- Deposit each quarter slowly, one at a time. It is best to listen for the quarter to quit moving before depositing another quarter.
---- Pull the handle slowly to the first stop - hesitate - then pull the handle all the way to the stop.
---- The product may fall just out of sight - if you do not see the item - bend down and look in the opening, or run you fingers up into the opening - once you touch the item, it will fall out.
Self-Service Car Wash Options in our area
Big Wash offers convenient coin operated self-service car wash options 24/7. Our self-service car wash facilities utilize brush-and-hose combinations that distribute detergent cleaners, spot free rinse, and waxes to enable you to clean your car with ease. We understand that having a clean car makes you feel good, and it is essential to keeping your car rust- and contaminant-free. Big Wash is the best place for the customers who prefer to do it themselves.
Customize Your Wash
Big Wash, takes pride in maintaining well-kept, well lighted, and clean facilities with multiple features that are environmentally friendly for our Katy patrons.
Car care & Detailing products in vending machines to make your car sparkle inside and out:
-
Drying Towels
+-25¢ White Paper Towels
-50¢ Blue 20"'x 28" Paper Towel
-75¢ Big Blue 20"x 40" Paper Towel
-$1 Blue Lint Free 17"x 22" Cloth SurgicalTowel
-
Application Towels & Sponges
+-50¢ Moist Wipe Cleaning Towel
-75¢ Glass Cleaning Towel - Removes road film, smoke, smears
-$1 Rain Vision Window Treatment Towel - rain repellant
-$1 Never Fog Window & Mirror Fog Prevention Towel
-$1 Leather Cleaner Towel
-$1 Leather Conditioner Towel
-$1 Leather Conditioner Towel
-
Tire Clean & Shine
+-$1 Black Jack Tire & Trim Silicone Clean and Shine
-$2 Armour All Tire Foam 4oz Pressurized Spray Can
-
Little Tree hanging fragrances in sealed single tree packages
+-$1 New Car fragrance
-$1 Black Ice fragrance
-$1 Leather fragrance
-$1 Vanilla fragrance
-$1 Bubble Gum fragrance
Features, options and highlights available to customize your car wash include in the Wash Bays:
- Foaming Hand Held Brush - to scrub off stubborn dirt
- High Pressure Soap - to wash off stubborn dirt
- High Pressure Rinse - to rinse off soap or wax
- Medium Pressure Presoak / Bug Remover - to soak and loosen dirt & bugs
- Medium Pressure Clear Coat - for quick wax protection & drying
- Low Pressure Tire & Wheel Cleaner - a powerful soaking cleaner removes grease, brake dust, polishes bright metal - great for engine and parts cleaning
- Low Pressure Foamy Wax - a thick foam wax coating that works best when it is spread over the car body with a towel
- Low Pressure Spot Free Rinse - a pure reverse osmosis rinse water prevents mineral spotting - no hand drying required


High-powered, self-service vacuums that are fast, powerful and easy to use:
- Two vacuum motors create more suction than home/shop vacuums
- Large diameter 2" hose x 18' length allows you to reach every part of the car.
- Backing into the space provides the best access to the interior & trunk
- Shade canopies are provided for your comfort and sun protection
- Special Services:
- 2 Fragrance Dispenser Vacuums - New Car / Vanilla / Wild Cherry fragrance choices
- 1 Carpet Shampoo & Spot Remover Vacuum
- 4 Vacuums
Countdown timers at each service location:
- 75¢ Start up or $1 Token Start up
- Add quarters or tokens to add more time while the timer is counting down
- Time remaining display to ensures you always know the time remaining
- A warning horn sounds when there is 1 minute remaining
Change Machines:
- Quarter Change Machine exchanges $1, $5, $10, & $20 Bills
- Token Machine accepts Credit Cards and $5, $10, & $20 Bills
- Only BIG WASH tokens work only at BIG WASH
Important Safety Features
We consider the safety of our customers. Big Wash in Katy is well lighted with bright lighting on the property, in each self-service bay and vacuum island. We also accept debit and credit cards in addition to cash for your added and enhanced protection.
Have Questions? Check Out Our FAQs
-
Why shouldn’t I wash my car at home?
+-You use about 150 gallons of fresh water when you wash your car by hand. The high pressures, foam brush, and chemicals at Big Wash wash you car much faster and that uses less water.
-The oil and dirt runoff that you generate from washing your car at home is polution that ends up in the storm drains, the streams of Katy, and ultimately the Gulf of Mexico. The used water at Big Wash passes through separators that remove the dirt and oil, then put the water into the municipal sewer for further treatment. None of the pollution enters the environment.
-
Can I dump my used motor oil at the car wash?
+-It is a violation of Federal environmental laws and local laws to dispose of oil or other hazardous materials in the car wash drains. Used motor oil should be recycled throught the auto supply store were you purchased your oil. Other hazardous materials can be recycled or safely disposed, the supplier who sold you the material can advise you about proper and legal disposal of the hazardous material.
-
Why does the paint finish on my car look streaky and dull?
+-This lackluster appearance is often a sign of oxidation, which occurs as paint ages and decays from exposure to road oils and sunlight. You can decrease the process by washing your vehicle frequently, applying a sealant regularly and coating it with a hand wax at least annually.
-How do I protect my clearcoat? A sealant creates a barrier that helps protect clearcoated surfaces from corrosive elements, such as ultraviolet rays and airborne contaminants. Other destructive factors include tree sap, acids from leaf stains, bug spatter and bird droppings. All of these can eat through the clearcoat and cause permanent damage. A sealant produces a protective shield for up to 30 days.

Contact Us Today!
For any machine or payment questions or concerns
fill out the form below:
Big Wash Self Service Car & Truck Wash
19540 Clay Rd
Katy, TX 77449
Phone: (281) 550-4953
Email: info@bigwashkaty.com
Business Hours: Open 24/7
MondayOpen 24 hours
TuesdayOpen 24 hours
WednesdayOpen 24 hours
ThursdayOpen 24 hours
FridayOpen 24 hours
SaturdayOpen 24 hours
SundayOpen 24 hours