America’s Fire Retardant Since 1958
We make DRI-ONE®, the flame retardant liquid solution Fire Marshals and building officials have recognized for more than six decades. Founded in Arizona. Still headquartered in the Valley of the Sun. Still made in the USA.
What we do
Flame retardant fire protection. One company, one job, since 1958.
Desert Research Institute, Inc. manufactures fire retardant and flame retardant treatments for the materials that actually catch fire first: raw wood, natural fabric, thatch, foam and other absorbent materials. We don’t sell a little of everything. We make the product, we test it, and we stand behind it.
Manufacture
DRI-ONE® products
DRI-ONE® Flame Retardant Liquid Solution for interior wood and fabric, and DRI-ONE® Exterior Protection for outdoor lumber, decks and fencing. Sizes from a 32 oz sprayer to a 275-gallon tote.
See the product lineTreat
Professional treatment service
Need it done for you? We treat bulk orders of fabric and lumber and issue treatment certificates for the inspector. Expedited turnaround is available for a fee.
Request treatment serviceCertify
Certified suppliers & applicators
Lumber yards, fabricators, fire protection contractors and distributors can become certified DRI-ONE® suppliers, with volume pricing and territory.
Become DRI certifiedStart here
What are you trying to protect?
Pick the material. We’ll tell you straight whether DRI-ONE® works on it and where to go next.
Why the name carries weight
Fire Marshals know DRI-ONE® by name.
DRI-ONE® has been applied in government buildings, schools, daycares, nuclear facilities and private homes for over sixty years. It meets ASTM E84 Class “A” flame spread on wood, the Steiner Tunnel Test, it meets NFPA 701 and California Title 19 for fabric, and it’s registered with the California State Fire Marshal, #C-027580. Those are the tests inspectors and building officials check in major metropolitan areas across the United States and in many other countries.
It’s a water-based liquid. No mixing, no dilution. Spray it, brush it, roll it or dip it, and it penetrates and bonds to the cellular structure of the material. Once it’s dry it’s clear, it has no odor, and you can paint or stain right over it.
Class A on wood
ASTM E84 flame spread classification, the top rating, on treated raw wood.
NFPA 701 on fabric
The flame propagation standard most often required for drapes, curtains and stage fabric.
Non-toxic
Water-based, non-hazardous, zero PBDEs. Built for occupied spaces like daycares and homes.
Made in USA
Family-owned and manufactured in America by the same company since 1958.
Arizona-born
Founded in the desert. Still in the Valley of the Sun.
Desert Research Institute, Inc. was founded in Arizona in 1958, and our headquarters is still here in the Valley of the Sun. Out here, dry fuel and heat are a fact of life, and that’s the environment this company grew up in. Almost seven decades later we’re still family-owned, still manufacturing in the USA, and still leading the way for fire protection in the modern world.
Our name is ours alone in the fire retardant business: Desert Research Institute, Inc., Cave Creek, Arizona, maker of DRI-ONE®.
Trusted by organizations including
Quick answers
Common questions
Who makes DRI-ONE® flame retardant?
Is DRI-ONE® Class A fire protection?
Is fire retardant the same as flame retardant?
Where is Desert Research Institute, Inc. located?
Where can I buy DRI-ONE®?
Get protected
Find the right size for your job.
Enter your square footage and we’ll tell you how many gallons of DRI-ONE® you need and which containers to order.
What Is Flame Retardant? How Fire Retardant Works
Straight answers on what flame retardant and fire retardant treatments do, what they can’t do, and how they differ from “fire resistant” and “fireproof.” No sales pitch until the end.
The short answer
Fire needs three things: heat, fuel and oxygen, kept going by a chemical chain reaction. Flame retardants work by attacking one or more of those. Some pull heat out of the material. Some form a protective char layer on the surface so the fuel underneath can’t feed the flame. Some release water vapor or non-combustible gases that dilute the oxygen and fuel at the flame front.
The goal is simple: when the ignition source is taken away, the flame on the treated material goes out instead of climbing the wall.
The fire triangle
Tap a side to see how a flame retardant interrupts it.
Don’t mix these up
Fire retardant vs. flame retardant vs. fire resistant vs. fireproof
These four terms get used interchangeably in ads. They don’t mean the same thing, and an inspector knows the difference.
Types of treatment
The four ways materials get flame retardant protection
Every approach has a place. Here’s how they compare in the real world.
| Method | How it works | Best for | The catch |
|---|---|---|---|
| Pressure-treated FRT lumber | Chemicals forced into wood in a factory pressure cylinder. | New construction where code calls for FRT wood. | Must be bought pre-treated. Can’t be done to wood already on site. |
| Intumescent coatings | A paint-like film that swells into an insulating char when heated. | Steel and finished surfaces. | Sits on top of the surface. Covers the look of the material and adds a film. |
| Penetrating liquid treatment | A liquid soaks into the material and bonds with its fibers. This is DRI-ONE®. | Raw wood, plywood, natural fabric, thatch and other absorbent materials, on site or in the shop. | Only works on porous material. Needs periodic retesting outdoors or after washing. |
| Inherently flame resistant fabric | The fiber itself resists burning. | New drapery and upholstery purchases. | Doesn’t help the fabric you already own. |
Know the limits
What flame retardant can’t do
Anyone who tells you a spray makes something fireproof is lying to you. Here’s the truth about treated materials.
- It won’t make anything fireproof. Treated wood still chars in a sustained fire.
- It can’t soak into painted, sealed, stained or water-repelled surfaces. Treat raw material first, finish it after.
- It has nothing to bond to on metal, glass or other non-porous surfaces.
- It doesn’t last forever outdoors or through the wash. Rain, UV and laundering pull it out over time, so you fire-test and retreat.
- It doesn’t replace smoke alarms, sprinklers or an exit plan. It buys time for them to work.
Quick answers
Flame retardant questions people actually ask
Does fire retardant make wood fireproof?
What’s the difference between fire retardant and fire resistant?
Is flame retardant spray toxic?
How long does flame retardant last?
Can you paint over flame retardant?
Next
See how DRI-ONE® does it.
Class A on wood, NFPA 701 on fabric, water-based, and made in Arizona since 1958.
Fire Retardant Terms & Class A Ratings, Explained
The words inspectors, specs and product labels use, in plain English. Search it, filter it, and see exactly where Class A sits on the flame spread scale.
Class A fire protection
What “Class A” actually measures
Class A is the top flame spread classification for building materials and interior finishes. The rating comes from the ASTM E84 tunnel test (also published as UL 723), often called the Steiner Tunnel Test. A sample about 24 feet long is mounted on the ceiling of a tunnel and exposed to a gas flame for 10 minutes. The test records how far and how fast flame travels along it, compared to inorganic cement board (0) and red oak flooring (100).
That number is the Flame Spread Index (FSI). Under the International Building Code, a material is Class A at 0 to 25, Class B at 26 to 75, and Class C at 76 to 200, and each class also requires a Smoke-Developed Index of 450 or less.
DRI-ONE® meets ASTM E84 Class “A” flame spread for wood, and it’s registered with the California State Fire Marshal, #C-027580.
Flame spread scale
Drag to any Flame Spread Index and see the class.
Reference points from the test method: inorganic reinforced cement board = 0, red oak flooring = 100. Classes per IBC Section 803. Always confirm what your local code and Fire Marshal require.
Glossary
Fire and flame retardant industry terms
- Standards
ASTM E84
- The standard tunnel test for surface burning characteristics of building materials. Produces the Flame Spread Index and Smoke-Developed Index used to assign Class A, B or C. Also known as the Steiner Tunnel Test.
- Standards
UL 723
- Underwriters Laboratories’ version of the ASTM E84 tunnel test. Same method, same results.
- Standards
Steiner Tunnel Test
- The nickname for ASTM E84 / UL 723, after the tunnel test apparatus. A roughly 24-foot sample burns for 10 minutes on the tunnel ceiling.
- Standards
ASTM E2768
- An extended 30-minute E84 test used to qualify fire-retardant-treated wood under the building code. Flame front may not progress more than 10.5 feet past the burner centerline.
- Standards
ASTM E119
- Fire-resistance test for building assemblies like walls, floors and roofs. Results are in hours, not flame spread. Different question, different test.
- Standards
ASTM D2898
- Accelerated weathering procedure for fire-retardant-treated wood meant for exterior use. Shows whether the treatment survives water exposure.
- Standards
NFPA 701
- Fire test for flame propagation of textiles and films. The standard most often required for drapes, curtains, stage curtains and fabric in public spaces. DRI-ONE® meets it on fabric.
- Standards
NFPA 255
- Former NFPA version of the E84 tunnel test, since withdrawn. Older specs and documents still cite it.
- Standards
UBC 42-1
- Uniform Building Code tunnel test standard, superseded when the International Building Code replaced the UBC. Still shows up on older certificates.
- Standards
California Title 19
- Part of the California Code of Regulations covering public safety, including State Fire Marshal rules on flame retardant chemicals and treated fabrics. DRI-ONE® meets Title 19 on fabric and is registered with the California State Fire Marshal, #C-027580.
- Standards
NFPA 704
- The diamond hazard label (health, flammability, instability, special) that tells emergency crews how dangerous a stored chemical is.
- Standards
IBC
- International Building Code. The model code most US jurisdictions adopt. Chapter 8 sets interior finish flame spread classes; Section 2303.2 covers fire-retardant-treated wood.
- Ratings
Class A
- Flame Spread Index 0–25 and Smoke-Developed Index 450 or less under ASTM E84. The top classification. Also called Class I.
- Ratings
Class B
- Flame Spread Index 26–75 and Smoke-Developed Index 450 or less. Also called Class II.
- Ratings
Class C
- Flame Spread Index 76–200 and Smoke-Developed Index 450 or less. Also called Class III.
- Ratings
Flame Spread Index (FSI)
- The number from ASTM E84 that compares how fast flame travels across a material against cement board (0) and red oak (100). Lower is better.
- Ratings
Smoke-Developed Index (SDI)
- The E84 measure of how much smoke a burning material gives off. Building code interior finish classes cap it at 450.
- Ratings
Fire-resistance rating
- How long, in hours, an assembly like a wall or door holds back fire under ASTM E119. Not the same as a flame spread class.
- Ratings
Self-extinguishing
- A material that stops burning on its own once the flame source is removed. The field test for DRI-ONE®: flame must go out within 2 seconds.
- Ratings
Char length
- How far a fabric sample burns in a vertical flame test. One of the measurements behind NFPA 701 results.
- Treatment
Fire retardant
- A treatment that slows ignition and stops flame from spreading across a material. Interchangeable with flame retardant in everyday use.
- Treatment
Flame retardant
- Same meaning as fire retardant. More common when talking about fabric and chemistry.
- Treatment
Fire resistant
- Describes a material or assembly that holds up under fire for a rated time. Different from a fire retardant treatment.
- Treatment
Fireproof
- Marketing language. No test standard uses it, and no spray makes organic material fireproof.
- Treatment
FRT wood
- Fire-retardant-treated wood, factory pressure-impregnated and qualified under ASTM E2768 for code-required uses.
- Treatment
Surface-applied treatment
- A fire retardant applied on site or in the shop by spray, brush, roll or dip, rather than in a factory pressure cylinder.
- Treatment
Penetrating treatment
- A liquid that soaks into the material and bonds with its fibers instead of forming a film on top. DRI-ONE® is a penetrating treatment.
- Treatment
Intumescent coating
- A paint-like coating that swells into an insulating char when heated. Common on steel. Forms a film on the surface.
- Treatment
Leaching
- A treatment washing out of the material over time from rain, moisture or laundering. The reason outdoor and washable items need retreatment.
- Treatment
Retreatment interval
- How often treated material should be fire-tested and retreated. Depends on sun, weather and washing, from right after laundering to every 3–5 years.
- Treatment
Treatment certificate
- A signed record of what was treated, when, with what, and to which standard. Fire Marshals ask for it.
- Chemistry
PBDEs
- Polybrominated diphenyl ethers. Older brominated flame retardants phased out in the US over health and environmental concerns. DRI-ONE® contains zero PBDEs.
- Chemistry
Char layer
- The carbon crust that forms on treated wood or cotton when heated. It shields the material underneath and starves the flame of fuel.
- Chemistry
Pyrolysis
- Heat breaking a material down into flammable gases before it ever flames. Fire retardants change this process so less fuel gas is released.
- Chemistry
Water-based
- Uses water as the carrier instead of a solvent. Low odor, easy cleanup, but it can freeze, so it shouldn’t be applied or stored below freezing.
- Application
Coverage rate
- Square feet one gallon treats. DRI-ONE® averages 200 sq ft per gallon on lumber and similar materials, based on 60+ years of field data, and 140 sq ft per gallon on natural textiles.
- Application
Dip treatment
- Fully submerging material in the treatment. DRI-ONE® supports a 30-second dip tank for yard or mill quantities of lumber.
- Application
Saturation
- Treating until the material is fully wetted through. Heavy or dense fabrics need both sides treated to get there.
- Application
Defensible space
- The cleared and treated buffer around a structure that slows wildfire. Treating dead vegetation and thatch is part of it in some regions.
- Application
AHJ / Fire Marshal
- The Authority Having Jurisdiction, usually the local Fire Marshal or building official, who decides what is accepted in your project. Ask them first.
No terms match. Try a shorter word, or call us at (480) 964-0200.
Quick answers
Class A and rating questions
What is a Class A fire rating?
Is Class A the same as fireproof?
What is the difference between ASTM E84 and NFPA 701?
What is California Title 19?
What is ASTM E2768?
Class A on wood
DRI-ONE® meets ASTM E84 Class “A”.
And NFPA 701 and California Title 19 on fabric. See how to apply it on every material.
DRI-ONE® Flame Retardant Liquid Solution
Class A flame retardant liquid flame protection for raw wood, natural fabric, thatch, foam and other absorbent materials. Water-based. Non-toxic. No mixing. Made in the USA since 1958.
Spec sheet at a glance
The numbers that matter on the job
What it is
An all-in-one flame retardant for absorbent materials
DRI-ONE® is a water-based flame retardant liquid solution made by Desert Research Institute, Inc. in Arizona. It’s formulated to protect, penetrate and bond to the cellular structure of absorbent materials: raw wood, plywood, natural fabric, thatch, soft foam and more. It doesn’t sit on top as a film. It soaks in.
Once it dries it’s clear and odorless, so the material looks and handles the same. Treated wood takes sealers, stains, primers and paint normally. Treated fabric keeps its hand. And when a flame hits it, the treated material resists ignition and stops flame from running across the surface.
That’s why Fire Marshals and building officials in major metropolitan areas across the United States, and in many other countries, have recognized DRI-ONE® for more than six decades.
Agency approval
Certifications, in DRI’s own words
- Meets ASTM E-84 Flame Spread Test Class “A” for wood, also known as the Steiner Tunnel Test. Similar methods: ANSI 2.5, NFPA No. 255, UBC No. 42-1 and UL No. 723.
- Meets NFPA 701 and California Administrative Code, Title 19 for Class One rating on fabric.
- Registered with the California State Fire Marshal, #C-027580.
Where it’s used
Government buildings · Daycares and schools · Nuclear facilities · Private homes · Commercial fit-outs · Drapes, curtains and upholstery · Plywood including ¾” stock · Thatch roofing
Application method selector
How to apply DRI-ONE® on your material
Pick the material. You get the method, the coats, the coverage and the warnings. Two coats is the standard.
Wood, lumber and plywood
- Method
- Spray, roll, brush, airless sprayer, or submerge unfinished wood. For yard or mill quantities, use a 30-second dip tank.
- Coats
- 2 coats is the standard. Let the first dry thoroughly before the second.
- Coverage
- 200 sq ft per gallon, the average across more than 60 years of DRI field data on lumber and similar materials.
- Know this
- Tested to ASTM E84 for a Class A flame spread rating on wood. Surface must be clean, dry and free of oils. Won’t work on wood already sealed, painted, stained or water-repelled. Once cured, treated wood takes sealer, stain, primer and paint normally. A green colorant can be added so treated wood is easy to identify. Outdoor decks and fencing: use DRI-ONE® Exterior Protection.
Natural fabric, textiles and paper
- Method
- Spray, roll, brush or dip.
- Coats
- 2 coats. Heavy or dense fabric needs both sides treated to saturate. Dry thoroughly between coats.
- Coverage
- 140 sq ft per gallon, the typical average on textiles.
- Know this
- Meets NFPA 701 and California Title 19. Test a small piece first and watch for shrinkage or changes in texture or appearance. Retreat right after every wash. Fabric in direct sun needs retreatment every year; fabric protected from sun can go up to 5 years.
Foam and upholstery
- Method
- Spray, saturating evenly.
- Coats
- 2 coats. Dry fully between coats.
- Know this
- Soft foam is one of the absorbent materials DRI-ONE® is made for. Always test a small hidden area first to check absorption and finish before you treat the whole piece.
Synthetics and unique absorbent materials
- Method
- Spray a small sample first. Synthetics vary too much to guess, so each one gets tested on its own. That includes sponge-type materials.
- Coats
- 2 coats on the test sample and on the full job. Note any shrinkage or change in texture or appearance.
- Know this
- Fire-test the dried sample: hold a flame to it, then pull the flame away. It should not keep burning, smoke should stop, and the test spot will look charred. Dense material may need both sides treated. The treatment washes out of washable synthetics and must be reapplied.
Thatch and dead vegetation
- Method
- Spray evenly with a pump sprayer or airless sprayer, covering the full surface top and bottom. Also used for wildfire defensible space on dead vegetation.
- Coats
- 2 coats, drying fully between them.
- Coverage
- 200 sq ft per gallon, applied liberally.
- Know this
- Not every thatch species responds the same. Natural waxes and oils in some species can cut flame resistance even when the product soaks in, so treatment may reduce flame spread without stopping it. Fire-test a treated sample before a big job. Retest every 1–2 years and after any heavy rain. Allow 4–5 days of drying on large thatch projects.
Shake roofs
- Method
- Spray. Works even on shakes treated with linseed oil 5 or more years ago.
- Coats
- 2 coats, both sides where you can reach.
- Know this
- DRI-ONE® leaches out of a shake roof over time. Fire-test and plan on retreating every 3–5 years.
Painted, sealed or finished surfaces
- Why
- DRI-ONE® has to penetrate the material to work. Paint, sealer, stain and water repellent block it.
- Do this
- Treat the raw material first. Let it dry completely. Then paint, stain, seal or prime.
Metal and hard, non-porous surfaces
- Why
- DRI-ONE® only works on porous, absorbent material. There’s nothing on raw metal or glass for it to bond to.
- Do this
- Cover metal and hard surfaces before spraying nearby. Wipe any overspray with a damp cloth or clear water.
Living plants
- Why
- DRI-ONE® can burn living plants on contact.
- Do this
- Cover plants near your work area. If overspray hits a plant, rinse it right away with clear water.
Prove it works
The field fire test
Every job gets tested. It takes a minute and it’s the same idea as an NFPA 701 field test.
- Let it dry completely. Test only after the treated piece is thoroughly dry.
- Hold a flame to a test piece. A match, lighter or butane lighter works.
- Remove the flame and count. The treated material must self-extinguish within 2 seconds.
- Retest on schedule. Every 3–5 years in general. If the protection is gone, reapply.
Weather
Apply in the right conditions
- Ideal temperature is 50°F to 85°F (10°C to 29°C).
- Below 50°F, drying slows down a lot and the treatment is less effective.
- Never apply or dry it in freezing temperatures. DRI-ONE® is water-based, and freezing changes the formula.
- Apply in dry weather. Rain and high humidity slow drying and curing.
- Check the forecast first, and give it extra drying time near 50°F.
Retreatment
How long DRI-ONE® protection lasts
Indoors and protected, a long time. Exposed to sun, rain or the washing machine, less. Here’s the schedule.
| Material & exposure | Fire-test and retreat |
|---|---|
| Fabric that gets washed | Right after every wash |
| Fabric in direct sun / UV | Every year |
| Fabric protected from sun | Up to 5 years |
| Thatch and dead vegetation | Every 1–2 years, and after heavy rain |
| Shake roofs | Every 3–5 years |
| General treated material | Retest every 3–5 years |
Quick answers
DRI-ONE® liquid solution questions
Does DRI-ONE® work on 3/4″ plywood?
Is DRI-ONE® safe and non-toxic?
Do I need to mix or dilute DRI-ONE®?
Can I paint or stain over DRI-ONE®?
How many coats of DRI-ONE® do I need?
Is DRI-ONE® approved for thatch roofing?
Order DRI-ONE®
From a 32 oz sprayer to a 275-gallon tote.
Free shipping to the lower 48 states at DRI-ONE.com, or order on Amazon.
More From DRI-ONE®: Exterior Protection & Services
DRI-ONE® Flame Retardant Liquid Solution is where we started in 1958. Here’s the rest of the line, the services behind it, and a quick tool to tell you which one fits your job.
Product chooser
Which DRI-ONE® product do you need?
Two questions. One straight answer.
1. Where is it?
2. What is it?
The line
DRI-ONE® products and services
Outdoor wood & textiles
DRI-ONE® Exterior Protection
A non-toxic, non-hazardous fire retardant formulated for outdoor use: raw lumber, decking, fencing, end-cuts, thatch, dead vegetation and exterior textiles. Built for small DIY home and school projects up to full commercial jobs.
- Class “A” flame spread rating per ASTM E-84, as stated on the DRI-ONE® Exterior Protection product label
- Dries clear, no odor, water-based
- 200 sq ft per gallon on lumber, 140 on natural textiles
- Spray, roll, brush, airless sprayer or submerge. 2 coats is the standard.
- Not recommended for interior fabric. Use standard DRI-ONE® indoors.
Sizes: 1 gallon · 5-gallon pail · 55-gallon drum · 275-gallon tote
Our original
DRI-ONE® Flame Retardant Liquid Solution
The all-in-one flame retardant for interior raw wood, natural fabric, foam, thatch and other absorbent materials. ASTM E84 Class “A” on wood. NFPA 701 and California Title 19 on fabric.
- From 32 oz sprayers to 275-gallon totes
- Water-based, zero PBDEs
- No mixing, dries clear
Done for you
Professional treatment service
Let us treat it. We handle bulk orders of fabric and lumber and treat to the standard your inspector asks for. Expedited turnaround is available for an added fee.
For the trade
Become a certified DRI-ONE® supplier
Lumber yards, fabricators, fire protection contractors and distributors: get volume pricing, certification and territory.
Side by side
DRI-ONE® vs. DRI-ONE® Exterior Protection
| DRI-ONE® | DRI-ONE® Exterior Protection | |
|---|---|---|
| Made for | Interior raw wood, natural fabric, foam, thatch, absorbent materials | Outdoor lumber, decking, fencing, end-cuts, thatch, dead vegetation, exterior textiles |
| Interior fabric | Yes, NFPA 701 and CA Title 19 | Not recommended |
| Wood rating | ASTM E84 Class “A” | ASTM E84 Class “A” (per product label) |
| Coverage | 200 sq ft/gal lumber · 140 textiles | 200 sq ft/gal lumber · 140 textiles |
| Coats | 2 (standard) | 2 (standard) |
| Sizes | 32 oz sprayer, multi-packs, 1 gal, 5 gal, 55 gal, 275 gal | 1 gal, 5 gal, 55 gal, 275 gal |
Quick answers
Product questions
What fire retardant should I use on a deck or fence?
Can I use Exterior Protection on curtains or indoor fabric?
Can DRI treat my material for me?
Ready to order
See every size and work out how much you need.
Fire Retardant Spray for Wood & Fabric
DRI-ONE® comes ready to spray, from a 32 oz trigger sprayer for a single project up to a 275-gallon tote for a production line. Class “A” on wood under ASTM E84. NFPA 701 on fabric. Figure out exactly how much you need below.
Coverage calculator
How much fire retardant spray do you need?
Pick the surface, enter the square footage, and you’ll get the gallons and the containers to order. The math uses DRI’s averages from more than 60 years of field data: 200 sq ft per gallon on lumber and similar materials, 140 sq ft per gallon on natural textiles, with 2 coats as the standard.
Coverage changes with how porous and how dry the material is and how you apply it. Dense fabric needs both sides treated. For a firm quote on a big job, call (480) 964-0200.
DRI-ONE® coverage calculator
Estimates from 68+ years of field data.
Surface
Calculate from length × width
You’ll need about
6 gallons
Recommended order
Every size
DRI-ONE® sizes and what each one covers
Coverage below uses DRI’s field averages: 200 sq ft per gallon on lumber, 140 on textiles. Prices and free shipping to the lower 48 are on DRI-ONE.com.
| Size | Volume | Covers wood | Covers fabric | Best for |
|---|---|---|---|---|
| Quart sprayer (32 oz) | 0.25 gal | ~50 sq ft | ~35 sq ft | Costumes, a set of drapes, small DIY projects |
| Quart sprayer packs (4 · 6 · 12) | 1 · 1.5 · 3 gal | ~200 · 300 · 600 sq ft | ~140 · 210 · 420 sq ft | Crews, classrooms, retail resale |
| 1 gallon jug | 1 gal | ~200 sq ft | ~140 sq ft | A room of plywood, a stage curtain |
| Combo: 1 gallon + 1 quart sprayer | 1.25 gal | ~250 sq ft | ~175 sq ft | Refill the sprayer from the jug |
| 4-pack of 1 gallon jugs | 4 gal | ~800 sq ft | ~560 sq ft | Mid-size jobs, easy handling |
| 5 gallon pail | 5 gal | ~1,000 sq ft | ~700 sq ft | Contractors, sprayer rigs |
| 55 gallon drum | 55 gal | ~11,000 sq ft | ~7,700 sq ft | Lumber yards, theaters, large fit-outs |
| 275 gallon tote | 275 gal | ~55,000 sq ft | ~38,500 sq ft | Production, dip tanks, distributors |
Treating outdoor decks, fences or exterior textiles? Use DRI-ONE® Exterior Protection, in 1, 5, 55 and 275 gallon sizes.
How to spray it
Spray, brush, roll or dip
DRI-ONE® is a flame retardant spray that doesn’t need a special rig. A trigger sprayer handles small jobs, a pump sprayer or airless spray gun handles walls, roofs and thatch, and a 30-second dip tank handles lumber by the bundle.
- Start with raw, clean, dry material. No paint, sealer or oil.
- Apply 2 coats, the standard. Let the first dry thoroughly before the second.
- Spray between 50°F and 85°F in dry weather. Never in freezing temperatures.
- Cover metal and living plants. Wipe or rinse overspray.
- Fire-test a dry piece. Flame must go out within 2 seconds.
Where to buy
Order direct at DRI-ONE.com
Every size, from the quart sprayer to the 275-gallon tote. Free shipping to the lower 48 states.
Order on Amazon
DRI-ONE® quart sprayers, gallons and multi-packs ship through the DRI-ONE® store on Amazon.
Need volume pricing?
Lumber yards, fabricators and contractors: call (480) 964-0200 or apply to become a certified DRI-ONE® supplier.
Quick answers
Fire retardant spray questions
How much fire retardant spray do I need?
What is the best fire retardant spray for wood?
What flame retardant spray works on fabric and curtains?
Is fire retardant spray safe to use indoors?
Does rain wash off fire retardant spray?
America’s fire retardant since 1958