Most roofing work replaces something that already exists. This page is about the other kind: a roof going onto new framing. As a full-service roofing contractor in Irving, TX offering residential and commercial roof installation, we take on room additions, second stories, garage conversions, custom homes and remodels that change a roofline. Inside a larger project, the questions change: how new meets old, when the roofer arrives in the build sequence, and who pulls which permit. Owners of finished homes may want our residential roofing page instead.
Roofs for additions, custom builds and remodels
The common projects we see:
- Room additions and enclosed patios that need a new roof joined to the existing one
- Second-story additions where the old roof comes off and a new, taller roof goes on
- Garage conversions and new detached garages or workshops
- Custom homes built from plans, where the roof can be designed and ordered from the start
- Remodels that move walls, add dormers or change the roof's shape
- Small commercial builds and tenant remodels
Irving's housing stock shapes this work: with the median home built in 1986 (Point2Homes), many projects add rooms or a second floor to a house whose original roof is already on its second cycle, so the new roof has to meet tired shingles and older decking. On each one, we review the framing or drawings before we price the work: pitch, decking, ventilation, where the new roof meets walls or the old roof, and which material makes sense. Metal is a frequent choice on new structures because the framing can be planned for it; see our metal roofing page for that option.
How do you tie a home addition into the existing roof?
The joint between old and new is where addition roofs leak, so it gets the most attention.
- Weave, don't lap. We remove existing shingles back from the joint so the new courses interlace with the old ones, rather than laying new shingles on top of the old edge.
- Flash every intersection. A new valley gets valley flashing; where the addition's roof meets a wall of the house, step flashing and counter-flashing go in with a kick-out at the bottom to steer water away from the wall.
- Match pitch where possible. Matching the original slope looks right and simplifies the tie-in. When the design forces a lower pitch, the material has to suit it.
- Balance ventilation. If the addition's attic connects to the main attic, intake and exhaust vents are sized for the combined space.
- Be honest about color. New shingles rarely match a roof that has weathered for years. We show you the closest match and also price re-roofing the whole house so it looks uniform.
Working with builders, remodelers and custom-home owners
On a new build or remodel, the roof is one trade among many. We plan around the framing schedule, dry the structure in with underlayment and drip edge as soon as the deck is ready, and return for final roofing once wall finishes are coordinated, since wall flashing must layer with siding, stucco or stone.
You or your builder get a written scope, a single contact and photos at each stage. Spanish-speaking owners and crews can work with us in Spanish; our se habla español page explains how we handle the job in both languages.
Questions about new roof installation? Talk to us.
Call for a free inspection and a written estimate. Hablamos español.
- 5.0 on Google (33 reviews)
- Free inspections & estimates
- Se habla español
- Workmanship guaranteed in writing with every contract
What a new roof installation in Irving, TX includes
A new roof is priced from a plan, so the written scope is where surprises get prevented. Every line names the component, the material and who is responsible for it, which matters when a builder, framer and siding crew share one site. Anything the drawings leave open, such as vent type or underlayment grade, is settled in writing before materials are ordered. A typical scope covers:
- Review of drawings or existing framing, decking and pitch, with a material that suits the pitch: shingles, metal, tile or a low-slope system
- Drip edge, underlayment (doubled where the slope requires it) and ice-and-water protection at valleys and walls where specified
- All flashing: valleys, walls, chimneys, skylight curbs and pipe penetrations
- Tie-in to the existing roof for additions, with the opened section kept covered until both roofs are shingled
- Ventilation sized to the attic
- Permit and inspection coordination, cleanup and photos of the finished roof
How a new roof goes on, step by step
- Site visit or plan review, then a written scope. We measure, check framing and decking, note how the roof meets the existing structure, and write up material, components, tie-in work and schedule in English or Spanish.
- Permits and approvals. We confirm which permit covers the roof and check HOA requirements.
- Dry-in. Drip edge and underlayment go on as soon as the deck passes, protecting the framing from rain.
- Flashing, tie-in and roofing. Valleys, wall flashing and the joint with the old roof, then shingles, metal or the chosen system, with ridge and vents.
- Inspection. The roof is inspected under the project's permit.
- Cleanup and handover. Debris removed, magnet sweep, photos and a walk-through.
Which permits does a new roof need in Irving?
Irving treats new construction and re-roofing differently. An addition or new house goes through a building permit, normally held by the builder or general contractor, and the roof is inspected as part of that project. A roof-only remodel or re-roof needs the city's re-roof permit, though Irving's residential roofing handout lets repairs up to 100 sq ft go without one. Contractors working in Irving must register with the city each year, a local check that matters because the state issues no roofing license at all: TDLR stays out of roofing, and RCAT's credential is optional.
The 2024 International Residential Code took effect in Irving on May 1, 2026 (Ordinance 2026-11253, as listed on eCode360), and it governs details like minimum shingle pitch and underlayment. Confirm which edition and permit apply to your project with Irving Inspections at (972) 721-2371, and read our post on whether you need a roofing permit in Irving.
What shapes the price of a new roof?
We have no reliable published range for new-construction roofing to cite, so pricing comes from your plans or a site visit. The main factors:
- Roof area and complexity: valleys, hips, dormers, walls and skylights
- Pitch and height, which drive safety setup and labor
- Material and its rating, from architectural shingles to standing seam metal
- Tie-in work and any tear-off of an existing section
- Low-slope sections that need a membrane or panel system
- Scheduling: trips to dry in now and finish later
- Permit and inspection requirements
On additions, the tie-in is the line owners most often underestimate. Opening the old roof to weave in new courses leaves part of the house exposed until both roofs are shingled, so it has to be scheduled tightly around the framing and the forecast, and a faded original roof may push you toward re-roofing every slope for a uniform look. Ask any bidder whether the tie-in is priced and covered by their workmanship guarantee; ours is, in writing.
Why RJ Premium Roofing for new roof installation
- Residential and commercial installation, including roof remodeling projects (proyectos de remodelación).
- A 5.0 average on Google from 33 reviews, checked November 2026.
- Free estimate with a written scope your builder can work from.
- Bilingual service: instalación de techos nuevos explained in Spanish or English.
- Each step explained, which reviewers mention, so owners and builders know what is happening on the roof that day.
- Cleanup after the crew, according to reviewers, which matters on a jobsite other trades still have to use.
- Fast response when a build schedule moves or weather shifts the install date.
Roofing materials carry their manufacturers' warranties, with terms that depend on the product and correct installation. Our workmanship guarantee comes in writing with your contract.
Fast growth on the north side of DFW keeps new roofs in demand. Along with Irving, we install new roofs in Frisco, Prosper, Celina and Coppell. Before hiring anyone for a build, read our guide to vetting a Texas roofer without a state license to check.
