What Professional Roofers Do (vs Framers, Cladding Contractors and Engineers)
Quick answer: Professional roofers install, repair, inspect and maintain the roof covering and the layers that keep water out: decking repairs, underlayment, flashing, shingles or metal, ventilation and drainage. Framers build and repair rafters and trusses, cladding contractors handle walls, and structural engineers or designers decide what the structure must carry. Hire the trade that matches the problem.
Key takeaways
- A roofer's scope runs from the decking up: sheathing repairs, underlayment, flashing, roof covering and ventilation.
- Rafters, trusses and load paths belong to framers, with an engineer involved when the structure is damaged or changed.
- Roofers and cladding contractors meet at sidewalls, where flashing and siding must be integrated.
- On additions, a designer or engineer designs the roof framing, and the roofer ties the new roof into the old one.
- Knowing who does what avoids paying for the wrong repair first.
What does a professional roofer do?
A professional roofer builds and maintains the weather-tight layers of a roof, from the deck sheathing up to the ridge. Their job is to make sure water sheds or drains off the building and never gets behind the roof covering.
That covers a lot of detail work: replacing rotten or delaminated decking, installing underlayment and self-adhered membranes, cutting valleys, flashing chimneys, walls and skylights, setting pipe boots, installing shingles, metal panels or low-slope membranes, and balancing attic intake and exhaust ventilation. A roofing professional also diagnoses leaks, which often means tracing water several feet upslope from the ceiling stain.
Evaluate a roofing contractor by demonstrated knowledge of the manufacturer's installation instructions, the building code requirements for roof assemblies (in Texas homes, typically the International Residential Code as adopted locally) and the safety equipment to do it properly.
Professional roofing services: repair, replacement, inspection and maintenance
Most professional roofing services fall into five groups. A roof services company may offer all of them or specialise in a few.
| Service | What it includes | When you need it |
|---|---|---|
| Inspection | Roof, attic and flashing check with photos and a written summary | After storms, before buying or selling, at intervals based on condition and maintenance requirements |
| Repair | Leaks, missing shingles, flashing, pipe boots, small decking areas | Localised damage on a roof with life left |
| Replacement | Tear-off, decking repairs, new underlayment, roof covering and ventilation | Widespread wear, repeated leaks, storm damage across slopes |
| Installation | New roof on new construction or an addition | New building or added space |
| Maintenance | Clearing debris, resealing, checking flashing, tune-ups, coatings or reconditioning where suitable | Ongoing, to extend service life |
Our residential roofing services page lists what we provide for homes. When you compare roof contractor services, ask each company which of these they actually do with their own crews.
Roofer vs frame contractor: who fixes the structure?
A frame contractor builds and repairs the structure that holds the roof up; a roofer repairs the surface that sheds water. When the decking is rotten, the roofer replaces it. When a rafter is cracked, a truss is broken or the ridge sags, that is framing work.
Signs the problem is structural, not just roofing:
- A ridge line that dips or a roof plane with a visible wave across several rafters.
- Cracked, split or notched rafters or truss members visible from the attic.
- Truss webs that were cut to make room for ductwork or attic storage.
- Walls cracking at the ceiling line or doors sticking upstairs after a roof problem appeared.
Many roofing contractors coordinate a framer when they find structural damage during tear-off, so the deck goes back onto sound framing. Damaged engineered trusses are a special case: they generally should not be cut, spliced or reinforced without a repair detail from the truss manufacturer or a licensed engineer.
When you need a roofing engineer or designer
Ask whether engineering or design review is required when the structure changes, shows damage or must carry a different load. The applicable authority and project conditions determine the requirement. Verify Texas engineering credentials with the Texas Board of Professional Engineers and Land Surveyors.
Common triggers:
- Switching to a heavier roof covering, such as concrete or clay tile, on a frame built for shingles.
- Adding solar panels, rooftop HVAC or a rooftop deck.
- Removing or moving a load-bearing wall under the roof.
- Visible sagging, failed connections or storm damage to the frame.
- A building official asking for sealed drawings for a permit.
"Roofing engineers" in commercial work also refers to consultants who design low-slope roof systems, drainage and wind uplift resistance, and write specifications for bidding. Roof designers on residential projects are usually the architect or building designer who sets roof pitch, overhangs and form.
Roofers vs cladding and siding contractors
Roofers handle the roof covering; a cladding contractor handles exterior wall finishes such as siding, stucco, stone and metal wall panels. The two trades meet wherever a roof runs into a wall, and that intersection requires coordinated flashing details.
At a sidewall, step flashing must be woven into each shingle course and lapped behind the wall's weather-resistive barrier, then covered by counter flashing or the siding. At the bottom of a sidewall, a kick-out flashing diverts water into the gutter instead of behind the cladding. When a roof is replaced, a professional roofing contractor may need to lift or remove the lowest course of siding to install new flashing correctly instead of sealing old flashing with caulk.
Additions and remodels: who builds the new roof?
On an addition, the designer or engineer designs the roof framing, the framers build it, and the roofer weatherproofs it and ties it into the existing roof. That tie-in deserves explicit design and responsibility in the scope.
What a good roof tie-in involves:
- Matching or deliberately transitioning the roof pitch and covering.
- Detailing each valley using a method approved for the roof products and slope.
- Integrating underlayment using the details required by the selected system.
- Re-flashing where the new roof meets the old wall.
- Checking that attic ventilation still balances once the new space is added.
Bring the roofer in at the planning stage, not after the framing is done. Our roof installation page covers new roofs on new construction and additions.
Why considering a professional roofer pays off
Choose the first assessment according to the symptom: active leakage needs roofing diagnosis, while visible structural distortion may require an engineer as well. Leaks blamed on the roof can come from siding, windows or gutters, and structural sag blamed on old shingles can come from failed framing or foundation movement. An inspection can document findings and identify when further investigation by another trade is needed.
When considering a professional roof service provider, look for written estimates that name products and details, proof of liability insurance, photos of their findings and clear answers about what they will and won't do. For repairs, see our roof repair service. If you are deciding between companies for a home or a business, our guide to commercial roofing options explains the difference.
Who is responsible when several trades share the repair?
Write down who diagnoses the problem, who designs any structural change, who performs each part of the work and who signs off the finished interfaces. A roofer's photograph can document a damaged member without establishing its capacity or a repair design. A framing repair can restore a member without completing the weatherproofing above it.
For a wall leak, ask who removes and reinstates cladding and who checks flashing integration before it is concealed. On an addition, ask who coordinates the roof connection with the approved drawings. If one contractor manages other trades, the agreement should name the scope, change process and responsibility for protecting the building between visits.
Verify an engineer and firm using the Texas Board of Professional Engineers and Land Surveyors roster. A roofing company description is not an engineering credential. Confirm the professional's relevant experience and whether your project needs signed and sealed documents with the applicable authority.
Central Texas considerations
For an Austin-area project, confirm the authority responsible for the address and the requirements for the actual scope. A mailing city alone does not settle jurisdiction. Structural changes and changes in roof covering may require different documentation from a localized surface repair.
Do not assign a cause to roof-line changes, wall cracks or a ceiling stain from appearance alone. Record when the issue appeared, any storm or renovation history and previous repairs. A qualified assessment should distinguish observed damage from possible causes before specifying work. Keep people away from visibly unstable areas and leave roof and unsafe attic access to professionals.
Manufacturer-system guidance
ARMA explains asphalt shingle repairability as work on a system with several components, including underlayment, shingles and caps. Use the selected product instructions and the inspected condition to define the actual repair; the article does not establish a universal repair price.
Frequently asked questions
Does a roofer fix rafters and trusses?
Roofers routinely replace damaged decking and sometimes fascia, but repairing cracked rafters, broken trusses or a sagging ridge is structural framing work. Many roofing companies coordinate a framer for that part, and damaged engineered trusses generally need a repair design from the truss manufacturer or a licensed engineer before anyone cuts or reinforces them.
When do I need a structural engineer for my roof?
Bring in a licensed structural engineer when there is visible sagging or a cracked or broken structural member, when you plan to add heavier roofing such as tile or solar over an older frame, when altering trusses or removing a load-bearing wall, or when a building official asks for sealed drawings.
Can a roofer install siding?
Some roofing companies also install siding, but many do not, and it is a separate trade with its own details. What every roofer must do is integrate roof flashing with the wall cladding where they meet, which sometimes means removing and resetting a course of siding so the step and counter flashing are correct.
What services does a roofing contractor provide?
A roofing contractor's services typically include inspections, leak and storm repairs, full replacement, new installation, maintenance, flashing repair, attic ventilation, gutters on some jobs, and coatings or reconditioning on suitable roofs. Commercial roofing contractors add low-slope membrane systems, rooftop equipment flashing and maintenance programs.
Who designs the roof on a home addition?
The roof framing on an addition is designed by the architect, building designer or engineer who prepares the plans, and built by the framing crew. The roofer then installs the roof covering and, critically, ties the new roof into the existing one with matching underlayment, valleys and flashing.
Start with a professional roof inspection
Not sure whether your problem is the roof, the framing or the walls? Texas Professional Roofing, a family-owned Austin roofer, will inspect and photograph what we find. Book a free, no-obligation inspection or call (512) 910-4110.