Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Tamko Home Additions & ADU: The Sacramento Owner’s Guide
If you’re planning a home addition or ADU with Tamko roofing and exterior products in play, you’re looking at a $45,000 to $130,000 project in Sacramento, and the roof system is only one line item inside that scope. We install Tamko shingles and underlayment as part of larger addition and ADU builds, and we stock the common Tamko-compatible flashing, ridge cap, and starter strip on our trucks so a roof rough-in doesn’t stall the framing crew. Most Sacramento homeowners reach out to us when they’re halfway through planning an ADU, realize their existing roofline has to tie into the new structure, and want a contractor who will write down exactly what the tie-in costs before drywall goes up.
Here’s the straight picture: a room addition or ADU in Sacramento means new shear walls, a roof structure that meets Title 24, a tie-in to the existing house, and a Tamko roof system spec’d and installed so the warranty actually holds. We handle the full scope, from foundation to ridge cap, with a written price before we move a single stud.
Which Tamko Models This Applies To
Tamko’s Heritage and Elite shingle lines are the two we spec most often on Sacramento additions and ADUs. The Heritage line runs through architectural laminated shingles in roughly 30-year weight classes, while Elite Glass-Seal moves into heavier, higher-wind-rated territory. For an ADU with a low-slope or nearly flat roof section, Tamko’s roll roofing and self-adhered base sheets come into play under the shingle field.
The compatibility gotcha most owners miss: you can’t mix just any Tamko shingle with any Tamko underlayment and still hold the system warranty. Tamko’s warranty language requires their own underlayment, starter, and cap products in the assembly when you want the full manufacturer coverage. We’ve seen homeowners buy three bundles of Heritage on closeout, then get turned down on a warranty claim because the underlayment was a competitor’s product. When we spec a Tamko roof on a Sacramento ADU, the whole assembly carries one manufacturer’s name.
For replacement or tie-in work, you want to match the existing shingle’s color and profile. Tamko stamps product codes on the bundle wrapper, not the shingle itself, so if you don’t have the original packaging, take a clear photo of the shingle surface and check the drip edge for leftover color granules. We’ll match it from our supplier’s current Tamko color board. Quality aftermarket flashings, pipe collars, and ridge vents work fine around Tamko shingles, but we don’t substitute off-brand underlayment when the warranty is on the line.
Styles & brands we work with
Signs Your Tamko Home Additions & ADU Is Failing
- Granule loss in the gutter or at downspout outlets. This means the asphalt layer is breaking down. On a Sacramento roof that bakes through 100-degree summers, granule loss usually shows up first on the south and west hips of an ADU roof. It’s not cosmetic; it’s the shingle giving up its UV armor.
- Curling or lifting at shingle edges. Heat and age dry out the asphalt, and the corners start to turn up. On an addition roof with poor attic ventilation, we see this in as little as eight to ten years, even on shingles rated for thirty.
- Leaks showing up at the tie-in between old roof and new addition. This is the intersection where most Sacramento addition roofs fail. The flashing detail has to be exact, or water walks right into the top plates and down the wall.
- Dark streaks running down from the ridge or field of the roof. On Tamko shingles, those streaks are usually algae, not structural failure, but they tell you the roof holds moisture longer than it should, which shortens shingle life.
- Wet spots in the ceiling or wall of the new room within the first two rains. That’s not a shingle failure, that’s an installation failure at the flashing or underlayment. It’s exactly the kind of thing our 365-Day Done Right Promise covers, and it’s why we don’t sub out the roof tie-in on our additions.
See the difference
Before
After
Before
After
Before
AfterReplacement Cost & What’s Included
For a full home addition in Sacramento, plan on $45,000 to $130,000 depending on square footage, roofline complexity, and whether you’re tying into an existing roof or building a separate structure. ADU construction runs $90,000 to $220,000. If your addition or ADU roof needs a Tamko re-roof or repair before the new build starts, that roof work lands in the $400 to $1,800 range for targeted repair, or $8,000 to $20,000 for full replacement if the existing roof is too far gone to tie into.
What’s included in our written price for a Tamko roof on an addition or ADU: the full Tamko system (shingles, underlayment, starter strip, ridge cap, and flashing), removal of any old material at the tie-in, new drip edge, and all labor. The price we write is the price you pay, and it covers the complete scope before the first tool comes out. The Garrison Standard means that number stays put.
Every job closes with a documented scope and a signed 365-Day Done Right Promise in your hand. If the roof leaks or fails inside a year, we come back and fix it at no charge.
DIY or Call Us?
Replacing a Tamko shingle or two is something a careful homeowner can do from a ladder with a flat bar and roofing nails, if the pitch is walkable and you don’t have to get near the ridge. But tying a new addition roof into an existing roof, or sheathing and roofing an ADU from scratch, is work that goes wrong in ways that don’t show up until the first Sacramento winter rain.
Roof and structural work on a ladder or a sloped roof is genuinely dangerous. The pitch on a Sacramento ADU roof is often steeper than the original house, and one misstep sends you to the emergency room. We’ve also seen DIY tie-ins that skipped the step flashing behind the new wall sheathing, and the resulting water damage cost more than the original roof would have. If you’re not fully comfortable on a roof, call us at (279) 226-1509 and we’ll come out and give you a written price, no charge for the estimate.
FAQs
A properly installed Tamko Heritage architectural shingle lasts 25 to 30 years in Sacramento’s climate, though the south-facing slopes on an ADU can lose a few years to sun exposure. The real variable is underlayment and flashing, and that’s where a by-the-book installation matters more than the shingle itself. Call (279) 226-1509 for a written price on your addition or ADU roof, and we’ll include the full Tamko system in the scope.
If the existing Tamko roof is less than about ten years old and wasn’t wrecked by a storm, we can usually repair and tie into it with matched shingles and new flashing. If the shingles are curling, granule-bare, or soft underfoot, tying into them is throwing money at a problem you’ll revisit in two years. We’ll tell you which applies to your roof, and the free estimate from (279) 226-1509 includes that assessment.
For a small ADU roof, expect two to four working days from tear-off or sheathing to ridge cap, weather permitting. A complex addition roof with a big tie-in can take a week. We won’t rush it, because Sacramento rain finds every shortcut, and our written price doesn’t change if the weather slows us down. Call (279) 226-1509 and we’ll give you a straight timeline in writing.
Yes. We keep Tamko Heritage architectural shingles in the most common Sacramento colors on our supplier runs, along with Tamko underlayment, starter strip, and ridge cap. If your addition or ADU needs a less common Tamko color or the Elite line, we can typically have it on site within a few days. A quick call to (279) 226-1509 confirms what’s on the truck today, and the estimate is free.
We’re an independent Sacramento general contractor, not a Tamko dealer or affiliate. We spec and install Tamko roofing products because they hold up in the Central Valley, and because we can stand behind them with our own written guarantee. If you’re planning an addition or ADU, or the roof on your current one is failing, call Curtis Lane and the crew at (279) 226-1509. Straight scope, firm price, no surprises after the drywall goes up.
Written by Curtis Lane, Owner, Bradford Remodeling Co Sacramento at Bradford Remodeling Co Sacramento, serving Sacramento and nearby areas.
