Put the oil back and keep the roof you already paid for. One visit, plant-based, patented, for a fraction of replacement.
Asphalt shingles are oil and stone. Sun takes the oil, the stone follows. Where your roof sits on that curve decides what a treatment does for you.
What is happening
From the day it goes on, UV and heat start pulling oil out of the asphalt. Nothing looks wrong yet because the granules are still fully anchored.
What a treatment does
Treating before granule loss shows up keeps the flexibility you paid for instead of trying to win it back later. An applicator can inspect, set a baseline and tell you the right year to start.
If it truly looks new, you may be told to wait a couple of years. That is the answer working.
What is happening
The oil is leaving. Shingles are stiffening, granules are washing off, and the asphalt underneath is starting to take sun directly.
What a treatment does
One treatment soaks into the binder, helps restore flexibility and helps re-anchor the granules that are still there. The manufacturer figure is up to 6 more years per treatment.
This is the roof the product was built for, and where a few thousand dollars does the most work.
What is happening
The alternative is a $20,000 to $40,000 replacement. If the shingles are intact, the deck is sound and there are no leaks, the roof has years left in it.
What a treatment does
A treatment is designed to extend that runway and push replacement out. Many homeowners treat once, then treat again a few years later.
Cracked, curling or missing shingles, or any active leak, means repair first. Your applicator will say so on the roof, not from the driveway.
Past the point?
Any of these means repair or replace first. Rejuvenation is maintenance for a sound roof.
No email needed. It tells you which conversation you are about to have with an applicator, including the one where they say not yet.
Is my roof a candidate?
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What is on your roof?
Every figure below comes from the manufacturer technical data sheet, tested against untreated shingles and the market-leading treatment.
Hail countryTexas, Colorado, the Plains, Alberta, the Prairies
In third-party bench testing, House Dressing treated shingles passed hail impact testing. The market-leading treatment failed the same test. A treatment is not hail-proofing and does not replace your insurance, but a pliable shingle is a shingle that takes the next storm better.
Wildfire and ember zonesCalifornia, the BC Interior, Alberta, Colorado, Oregon
Third-party testing measured 15 inches of flame spread on treated shingles against 42 inches untreated. That is not a fire rating and it does not make a roof fireproof. It is a measured reduction, published on the technical data sheet, from a plant-based oil with no flash point.
Canada, the Midwest, the Northeast
Cold is what turns a dry shingle into a cracked one: ice moves, someone walks the roof, a tab snaps. Treated shingles passed the pliability test at 55F. The untreated control did not.
Arizona, Texas, Florida, Nevada, Southern California
Granule adhesion improved 50 percent in testing, roughly three times the market leader. Keeping granules on the roof keeps the asphalt underneath out of direct sun, which is the whole game in a hot climate.
Coasts, the Plains, the Prairies, anywhere gusty
Every shingle has an adhesive strip that softens and bonds in the sun when new, then dries out with age. The treatment helps re-activate that asphalt so tabs stay sealed and resist lifting.
Everyone with a roof over 10 years old
Buyers ask about the roof. Insurers ask about the roof. A dated treatment record with the technical data behind it is a better answer than a shrug, and a far cheaper one than replacing a roof you did not need to replace. Ask your insurer what they recognize.
Sound is off until you tap. The words are on screen either way.
Asphalt shingles do not fail all at once. Sun bakes the oil out, and they dry, curl, and shed their granules. House Dressing puts the oil back. A trained applicator mists it on in a single visit. Flexibility returns, and the granules lock down. Patented, plant-based, and up to six more years from the roof you already have.
2 to 4hrs
On the roof
1visit
Done the same day
0
Tear-off, no dumpster
Inspect
Dealer checks shingle age, brittleness, granule loss, and whether the roof qualifies.
Treat
House Dressing is mist-applied across the entire roof surface in a single visit.
Absorb
The plant-derived oil penetrates the asphalt matrix and rebuilds flexibility from inside.
Protect
Granules lock back in. The roof keeps shedding water like it did when it was new.
The math
$20k to $40k
Typical full replacement
$3k to $6k
Typical treatment, single-family roof
Up to 6 yrs
Added roof life per treatment, manufacturer figure
Your applicator quotes your roof after inspecting it. Prices vary by roof size, pitch, condition and market.
These are the manufacturer published bench results, not ours. Two rows are worth a second look: granule adhesion, and the hail test the market leader failed.
| Property | Untreated | Market leader | House Dressing |
|---|---|---|---|
| Granule adhesion | Baseline | 17% better | 50% better |
| Flame spread | 42 in | 30 in | 15 in |
| Hail impact | Pass | Fail | Pass |
| Pliability at 55F | Fail | Pass | Pass |
| Sun bleaching | Baseline | Short term | Long lasting |
From the manufacturer technical data sheet dated 31 July 2026. Results depend on roof condition, shingle type, weather, preparation and application rate.
Patented chemistry
Semi-epoxidized soybean oil from the Iowa State University team.
Not biodiesel, not raw vegetable oil, not a methyl ester blend. US Patent 11773265B2, with peer-reviewed research behind it.
Read the scienceNo warranty. On purpose.
Long written roof warranties in this industry are very hard to collect on. We publish the data instead and let you read it before you spend a dollar. Ask us for the technical data sheet and the test reports.
In their own words. Each competitor row is taken from that brand's public website in August 2026. Terms change, so confirm with the brand before you buy from anyone, including us.
| Brand | What it says it is | Warranty position | What to ask before you buy |
|---|---|---|---|
| House Dressing | SESO, semi-epoxidized soybean oil. Engineered to interact with the oxidized asphalt binder, not only soften it. Issued US patent from the Iowa State University team. | None sold, on purpose. You get the technical data sheet, third-party test reports and peer-reviewed research before you buy. | Ask for the TDS and the test reports. We send them. |
| Roof Maxx | Describes its product as a soybean-based treatment using a soy methyl ester emulsion. | Advertises a 5-year flexibility warranty. | Ask what the warranty covers, what it excludes, and whether it is prorated. |
| GoNano NuRoof | Describes an organosilane and organosiloxane nano formula that penetrates the shingle and forms a hydrophobic barrier. Not an oil. | Advertises a limited warranty of up to 15 years, depending on roof age, condition and location. | Ask which tier your roof qualifies for and what the limited terms exclude. |
| Fresh Roof | Describes a plant-based soybean product it calls GreenSoy Technology. | Advertises a 6-year performance warranty when applied by a certified dealer. | Ask for the third-party test data behind the claims on the site. |
| Roof Rejuvenate | Describes a corn-based, USDA-certified bio-based rejuvenator developed by Colorbiotics, a Sika company. | Check their site. Terms vary by applicator. | Ask what the extension claim is based on and who applies it in your area. |
Roof rejuvenation is a maintenance treatment for asphalt shingle roofs. A plant-based oil is mist-applied across the roof and soaks into the asphalt, replacing some of the oil that sun and heat have baked out. It helps restore flexibility and helps hold granules in place. It is not a coating, not a sealant and not a repair.
The honest answer is: it depends on the product and the roof. House Dressing is built on a patented, semi-epoxidized soybean oil from the original Iowa State University research team. In third-party bench testing against untreated shingles, granule adhesion improved 50 percent, flame spread dropped from 42 inches to 15, and treated shingles passed hail impact and cold pliability tests the untreated control failed. On a sound roof, that is the mechanism working. On a failing roof, nothing sprayed on top will save it.
Most homeowners pay between $3,000 and $6,000 for a single-family roof, depending on size, pitch and local labor. That is typically 10 to 25 percent of what a replacement costs in the same market. Your applicator prices your specific roof after looking at it.
Run the math. A treatment in the low thousands is designed to add up to 6 years to a roof that would otherwise cost $20,000 to $40,000 to replace. If your shingles are intact and the roof is dry, you are buying years at a fraction of replacement cost. If the roof is already leaking or cracking, the money is better spent on repair.
The manufacturer figure is up to 6 additional years of roof life per treatment. Treat that as a ceiling rather than a promise: roof condition, shingle type, climate, preparation and application rate all move the result. Many homeowners treat again a few years later to keep pushing replacement out.
Age matters less than condition. A 20-year-old roof that is lying flat with intact shingles and a sound deck is a candidate. A 12-year-old roof with active leaks and cracked shingles is not, until it is repaired. Asphalt shingles only. Metal, tile, cedar and flat membrane roofs need a different product.
Yes. It is a soybean-oil based, biodegradable product with no flash point and no harsh solvents. Pets stay inside during the application and crews protect plants and siding from overspray. Then everything goes back to normal.
For a few days the roof looks slightly darker because the asphalt is saturated. Within a week or two it settles to its normal appearance. There is no film, no shine and nothing to peel, because the product is inside the shingle, not on top of it.
We do not sell a roof warranty, and that is deliberate. This industry advertises long written warranties that are hard to collect on. What we give you instead is the evidence: an issued US patent, peer-reviewed research, a published technical data sheet and independent test reports, all available before you buy. Your applicator may offer their own workmanship terms, which is separate.
Chemistry and proof. Roof Maxx describes a soy methyl ester emulsion, GoNano describes a silane-based nano formula, Fresh Roof describes a plant-based soy product, and Roof Rejuvenate describes a corn-based blend. House Dressing is semi-epoxidized soybean oil, engineered to interact with oxidized asphalt rather than only soften it, protected by an issued US patent, with third-party test data published on our science page. We also do not sell a warranty, where most of the others advertise one.
No. House Dressing is supplied as a concentrate to trained applicators. It is diluted on site, applied with the right sprayer setup, and needs surface preparation and fall protection. Spraying concentrate straight onto a roof can damage the shingles.
Use the form on this page. Tell us where you are and roughly how old the roof is. We connect you with a trained applicator in your area, or help your existing roofer become one. If your roof is past the point where this helps, we will tell you that too.
We connect you with a trained House Dressing applicator in your area, or help your own roofer become one. If your roof is past the point where this helps, we say so.
