--- title: "Home Additions & Remodeling" description: "Additions and remodeling — roofing, siding, gutters, windows, doors, painting, kitchens, baths, and decks, with the roof tie-in detailed properly." canonical: "https://cmac-new-concept.vercel.app/services/roofing/home-additions" last-modified: "2026-08-24" --- # Home Additions & Remodeling > Additions and remodeling — roofing, siding, gutters, windows, doors, painting, kitchens, baths, and decks, with the roof tie-in detailed properly. Canonical: https://cmac-new-concept.vercel.app/services/roofing/home-additions Last updated: 2026-08-24 Remodeling and additions — we build your vision. Transform your home with CMAC experts. Additions and remodeling — roofing, siding, gutters, windows, doors, painting, kitchens, baths, and decks, with the roof tie-in detailed properly. [Request Inspection](https://cmac-new-concept.vercel.app/quote) ## Home Additions & Remodeling, clearly scoped. CMAC’s remodeling and additions work covers roof restoration, siding, gutters, windows, exterior and garage doors, exterior painting, kitchen remodeling, bathroom remodeling, and deck construction. The approved project scope and applicable warranty terms should be documented in writing before work begins. The part of an addition that most often goes wrong is not the framing, the finishes, or the permit. It is the roof tie-in — the place where the new structure meets the old one. ## Why the tie-in is the leak point Two things are true at a tie-in that are not true anywhere else on the house. First, it concentrates more flashing per linear foot than any other detail — new valleys, a roof-to-wall run, a head condition, and often a cricket, all within a few feet of each other. Second, the addition and the original house sit on different foundations poured decades apart, and they settle at different rates. A rigid, sealant-dependent detail at a moving joint has a predictable ending. ## Match the plane and the pitch The cleanest addition roof continues an existing plane at the same pitch, so the new field simply becomes part of the old one. When the pitch changes, the transition has to be built and flashed as a deliberate detail rather than trimmed to fit — a pitch change creates a break where water changes speed and direction, and that break needs metal under it. When the addition runs in as a lower roof against an existing wall, the detail is roof-to-wall: step flashing woven course by course up the wall, counterflashing or the siding’s weather barrier lapped correctly over it, and — critically — a kickout flashing at the bottom where the roof edge dies out above the gutter. Without the kickout, water runs off the end of the roof and straight down inside the wall. That failure is invisible from outside until the sheathing is gone. ## Check the slope before you choose the material Additions frequently end up with a shallower roof than the house, because the addition roof has to duck under existing windows or eaves. Asphalt shingles have a minimum slope: standard application is generally limited to 4:12 and steeper, and low-slope application down to 2:12 requires a doubled underlayment. Below 2:12, shingles are the wrong product no matter how well they are installed, and the addition needs a low-slope membrane instead. Building a shallow addition roof out of shingles is one of the most common and most avoidable failures in residential remodeling. ## Weathering-in the connection Where new decking meets old, the layers have to shingle correctly — each upslope layer lapping over the one below it, with the new underlayment tucked under the existing course above rather than laid on top of it. Self-adhering ice-and-water membrane belongs across the tie-in itself and up any new valley, because that is where water concentrates and where movement is greatest. The existing shingles also have to be cut back and the new courses laced into them, so the courses continue across the joint. Butting new material against old leaves a seam running across the slope, which is both a visible line and a path for water. ## Matching an aged roof Even the identical product, from the same manufacturer, in the same color, will not match a roof that has been weathering for ten years — sunlight shifts the granule blend and no new shingle comes out of the bundle looking aged. You have three honest options: accept a visible difference where the addition ties in, re-roof the entire affected plane so the change lands at a natural break like a ridge or valley, or re-roof the whole house and get a uniform result plus a new system warranty. Which one is right depends on how visible the elevation is and how much life the existing roof has left. ## Everything the addition touches on the outside An addition rarely stops at the roof. Gutters and downspouts usually need re-routing so the new roof does not dump water onto the old one or against the foundation. Siding has to be matched and its weather barrier lapped into the new flashings. Windows and doors on the addition should match the house in operation and profile, not just in size. Exterior paint on a new elevation almost always means painting adjacent elevations to avoid a hard color line. And a deck built off an addition needs a properly flashed ledger, because a ledger fastened through siding without flashing is both a rot problem and a safety one. CMAC is veteran-owned, GAF Master Elite® certified, a GAF President’s Club award winner, an NRCA member, and rated A+ by the Better Business Bureau, working across Texas, Oklahoma, Arkansas, Tennessee, and Georgia. ## What home additions & remodeling includes ### Roof restoration and tie-ins The addition roof planned against the existing planes, pitches, and valleys before framing is set. ### Siding and exterior painting New elevations matched into the existing siding, weather barrier, and color. ### Gutters and downspouts Drainage re-routed so the new roof sheds away from the old roof and away from the foundation. ### Windows and doors Exterior doors, garage doors, and windows matched to the house in profile and operation. ### Kitchens, baths, and decks Interior remodeling and deck construction, including properly flashed deck ledgers. ### Written warranty terms Applicable material and workmanship terms are documented for the approved project. ## The CMAC process for home additions & remodeling 1. **Schedule** — Tell us what is happening at your property. 2. **Inspect** — We document the property and affected systems carefully. 3. **Plan** — Review a clear scope and written proposal. 4. **Build** — The CMAC team completes the approved work. 5. **Confirm** — A final walkthrough closes out the project. ## Systems and manufacturers - **GAF** — Master Elite® certified — full shingle system - **CertainTeed** — Asphalt shingle systems - **Atlas** — Asphalt shingle systems - **TAMKO** — Asphalt shingle systems ## Home Additions & Remodeling questions ### What does GAF Master Elite® mean? GAF awards Master Elite® status to a small fraction of roofing contractors in North America. It requires proof of proper licensing, adequate insurance, and a sustained record of quality installations and customer satisfaction. Practically, it means CMAC can offer enhanced GAF system warranties that non-certified contractors cannot, and that GAF has independently vetted the company. CMAC is also a GAF President’s Club award winner. ### Do you charge for an inspection or an estimate? No. The inspection, the damage documentation including drone photography, and the written estimate are all free and carry no obligation. If the roof does not need work, we will tell you that. ### Will CMAC work with my insurance company? CMAC can document visible damage, provide a contractor report, and attend the carrier’s inspection to explain the proposed repair scope. CMAC is a contractor, not a public adjuster or law firm, and does not interpret policy coverage or represent a policyholder in a coverage dispute. ### How do I know whether to repair or replace my roof? Age relative to the material’s service life, how widespread the damage is, and whether you have had more than one leak are the deciding factors. Isolated damage on a roof with years of life left is a repair. Widespread granule loss, exposed mat, multiple leak points, or hail bruising across every slope generally means replacement, because patching a failing system just moves the next leak somewhere else. An inspection settles it. ### How long does a roof replacement take? Most residential asphalt shingle replacements are a one to two day job once materials are on site. Tile, slate, metal, and complex roof geometry take longer. Weather, decking replacement discovered after tear-off, and permit or HOA requirements are the usual reasons a schedule moves. ### My roof looks fine from the ground. Could it still be damaged? Frequently, yes. Hail bruises the mat underneath the granule surface, and that bruising is often invisible from the ground and sometimes hard to see from a ladder. It shortens the roof’s life and creates the leaks you will discover a year or two later, after your claim window has closed. That is why documented post-storm inspections matter. ## Related services - [Roofing](https://cmac-new-concept.vercel.app/services/roofing) - [Roof Replacement](https://cmac-new-concept.vercel.app/services/roofing/roof-replacement) - [Roof Repair](https://cmac-new-concept.vercel.app/services/roofing/roof-repairs) - [Custom Homes](https://cmac-new-concept.vercel.app/services/roofing/custom-homes) ## Start with a free inspection. Tell CMAC what is happening at the property. We will inspect the condition and put the recommended scope in writing. [Request Inspection](https://cmac-new-concept.vercel.app/quote) [Call 1-888-389-CMAC](tel:+18883892622) ## Sources - https://www.cmacroofing.com/home-additions