SuperDeck® Exotic Timber Oil Red Mahogany Review: First Deck Before & After (Kingsport, TN)
I'm Caleb at Rock's Painting in the Tri-Cities. Back in April I put out a first look at SuperDeck® Exotic Timber Oil — but that was straight off the manufacturer's spec sheet, before I'd ever opened a can. I promised in that post that once I ran it on a real deck, I'd come back with the real-world results. This is that update.
We just finished a full deck on a home in Kingsport, Tennessee in Red Mahogany, and it was our first time getting to try this brand-new product on a paying job. Below are the real before & after photos, how it actually applied, and what the color looks like in person.
Before & After — SuperDeck® Exotic Timber Oil in Red Mahogany
Same camera angles, before and after. This was fresh pressure-treated pine — a new deck — so we had clean, raw wood to work with. Watch what Red Mahogany does to it.
Watch the Before & After (15-Second Short)
Here's the whole transformation in motion — raw pressure-treated pine to deep Red Mahogany in about 15 seconds.
Prefer YouTube? Watch the before & after Short on YouTube →
What We Used
- Product: Sherwin-Williams® SuperDeck® Exotic Timber Oil (SD11 Series)
- Color: Red Mahogany — SD11R0008 (ready-mix, not tintable)
- Type: Oil-based penetrating stain, alkyd + oil blend, no-sheen finish
- Surface: New pressure-treated pine deck
Quick note on the name: Sherwin-Williams® makes this in four ready-mix colors — Natural, Cedar, Redwood, and Red Mahogany. There's no "Redwood Mahogany," even though it's easy to blend the two reds together when you're talking about it. The deep one we used here — the dark reddish-brown in these photos — is Red Mahogany.
How It Went On
This was our first time getting to try this brand-new stain on a real deck, so I was paying close attention. The honest verdict: it applied like your standard high-quality oil stain. Nothing weird, nothing finicky — if you've worked with good penetrating oils before, you already know how to run this one. It's a one-coat penetrating oil by design; you work it into the wood, keep a wet edge, and wipe back any excess so it doesn't pool and go tacky (same discipline as any oil stain).
Everybody on the deck that day loved working with it. That doesn't always happen — some products are a chore. This one wasn't.
The Color: Red Mahogany
This is where the product won me over. Red Mahogany came out as a dark, brownish-red — rich, but not a loud, candy-apple red. It's a more grown-up, furniture-grade tone that genuinely looked different from the deck stains I reach for every week. On fresh pressure-treated pine it reads deep and warm without going orange, and it makes the grain pop.
If you've been chasing that high-end mahogany deck look, it's worth comparing this against the two-coat film finish we put down in our PPG ProLuxe® (Sikkens) Mahogany review. ProLuxe builds a glossy film at $120 a gallon; SuperDeck® Exotic is a penetrating oil with no sheen. Two different looks, two very different price points — and Red Mahogany holds its own on color.
More Photos From the Job
A few more from the same project — raw pine going in, finished Red Mahogany coming out.
The Spec Sheet (Straight From the PDS)
For the spec hunters — here are the numbers from the manufacturer's Product Data Sheet (SD11 Series, PDS 114.23, dated 03/04/2026), for the exact product we used:
| Spec | SuperDeck® Exotic Timber Oil — Red Mahogany |
|---|---|
| Series / PDS | SD11 Series · PDS 114.23 (03/04/2026) |
| Color used | Red Mahogany — SD11R0008 (ready-mix, not tintable) |
| Type / vehicle | Oil-based penetrating stain — alkyd + oil blend |
| Finish | No sheen (natural matte) |
| Coverage (smooth wood) | 400–600 sq ft / gal |
| Coverage (rough wood) | 250–350 sq ft / gal |
| Coats | 1 (optional wet-on-wet 2nd for more opacity) |
| Volume solids | 33% ± 2% |
| VOC | 516 g/L — high-VOC, federal-only (not CARB / OTC / Canada compliant) |
| Dry to touch / to use | 8 hrs / 24–48 hrs |
| Shelf life | 60 months unopened (best-in-class) |
| Mildew resistance | Yes — built-in mildew-inhibiting agents |
| Rated substrates | PT pine, cedar, redwood + hardwoods (Ipe, Teak, Mahogany) |
A couple of those are worth calling out. The 60-month shelf life is unusually long for an oil stain (most are 24–36 months). And the 516 g/L VOC means it's a federal-only product — fine here in Tennessee and Virginia, but not legal in California, Canada, or OTC Phase II states. If you're in a VOC-restricted area, that's where Cabot® Australian Timber Oil Low VOC comes in (more on the SuperDeck-vs-Cabot relationship in our first-look post).
Where It Fits in My Lineup
One job in, I'm not about to dethrone my proven go-tos on the strength of a single deck. For standard pressure-treated and cedar decks in East Tennessee, TWP 100 Series still has the long track record with my customers. What SuperDeck® Exotic Timber Oil earned with this project is a real spot in the rotation — especially when a customer wants that deep Red Mahogany color or I'm staining a hardwood, which this stain is specifically rated for.
For more on what deck staining runs around here, see our Tri-Cities deck staining cost guide.
The Real Test Is Longevity
Here's the honest part. A deck stain can look perfect on day one and still fail you in two years — and this product is brand-new, so nobody has multi-year, real-world data on it yet. Color and application I can speak to right now: both excellent. Durability, I can't — not yet, and I won't pretend otherwise.
So we're doing what we always do: we warranty our work, and the homeowner and I are going to stay in touch and keep a close eye on this deck. I'll come back and update this post as it ages — one year, two years, and beyond — so anyone Googling this stain gets honest, real-world feedback instead of just spec-sheet promises. Bookmark it and check back.
Frequently Asked Questions
What color is this deck stained?
Sherwin-Williams® SuperDeck® Exotic Timber Oil in Red Mahogany (SD11R0008) — a dark, brownish-red penetrating oil with no sheen. It is one of four ready-mix colors (Natural, Cedar, Redwood, Red Mahogany) and is not tintable.
Is SuperDeck® Exotic Timber Oil any good?
One job in, our first take is very positive: it applied like a top-quality oil stain, the Red Mahogany color is beautiful, and the whole crew enjoyed working with it. The one thing we can't speak to yet is long-term durability, because the product is brand-new — we're tracking this deck over the coming years and will update.
How many coats does it need?
One. It's a penetrating oil — a single coat is sufficient, with an optional wet-on-wet second coat for more opacity only while the first coat is still wet. You don't recoat a dried first coat with penetrating oil.
What kind of wood was this deck?
New pressure-treated pine — a fresh deck. SuperDeck® Exotic Timber Oil is rated for PT pine, cedar, and redwood as well as hardwoods like Ipe, Teak, and Mahogany.
Where do you buy it?
Through Sherwin-Williams® company stores. The closely related sister product, Cabot® Australian Timber Oil (also owned by Sherwin-Williams®), is the version sold at Home Depot and Lowe's.
Want Your Tri-Cities Deck Stained by a Pro?
Rock's Painting stains decks across the Tri-Cities — Johnson City, Kingsport, Bristol, Elizabethton, and the surrounding TN/VA communities. Whether you want this new SuperDeck® Exotic Timber Oil in Red Mahogany, a proven product like TWP 100, or you're not sure what fits your deck, I'll help you pick the right stain and apply it the right way.
Deck staining starts at $1,000 with materials; most projects land in the $1,000–$5,000 range depending on size, prep, and product. Request a free deck staining estimate or call (423) 207-2347. We'll come look at your deck, talk through stain options, and give you an honest quote.
This post will be updated with long-term results as this Red Mahogany deck ages. Bookmark it or follow Rock's Painting for the update.