Gutter installation: a guide for pros
What customers ask, how to win the job, and what to put on your profile.
Offering gutter installation
Gutter installation is a fit-and-slope job where the fascia condition, the slope and the downspout layout decide how well the system works. Your win is measuring the roof, marking the slope and explaining where every drop of water goes.
What customers ask
- How big should my gutters be for this roof?
- Where will the downspouts go, and will the water stay away from my foundation?
- What do you do if the fascia is soft or rotten?
- Are seamless gutters worth it compared to sectional?
- Can you match the gutters to my trim color?
- Will the gutters hold up to the snow and leaves we get here?
How to win the job
- On the first call, ask for the roof size and pitch, the number of stories, where water collects now, and any fascia or soffit damage you can see from the ground.
- Bring a sample of the gutter profile and the hanger type to the visit, and show the homeowner the slope and hanger spacing on the sample.
- Measure each roof run and mark the downspout locations on a sketch of the house, then send the sketch with the quote.
- Put the gutter profile, material, thickness, color and hanger type in the quote as separate lines, along with the number of corners, end caps and outlets.
- Show the downspout discharge plan in the quote, with each outlet's extension, splash block or underground connection named.
- List any fascia repair as its own line and say it is priced if found, so the homeowner approves it before you install.
- Run a hose through the system at the end and send a photo of the water reaching each outlet.
What to put on your profile
- Photos of finished gutter runs that show the slope, hangers, corners and downspout discharge
- Gutter materials and profiles you install, such as aluminum, steel or copper
- Whether you run seamless gutters on site or do sectional work only
- Service area and whether you handle fascia repair and drainage work in the same visit
Follow-up that helps the customer
- Offer gutter guard installation once the new gutters are in, since clean gutters are easier to protect.
- Suggest a downspout extension or underground drain review if the discharge still lands near the foundation.
- Recommend a gutter check after the first season of leaves to confirm the slope held and the joints stayed sealed.
Licenses and permits
Gutter installation is commonly done by general exterior contractors, and rules vary by place. Check your state and local licensing requirements, and check the local building office if the work changes drainage or the roof edge.
Questions
Do I need a permit for gutter installation?
Usually not for gutters alone, but drainage changes and underground connections can need a permit. Check with the local building office before you start that part of the job.
How do I handle a fascia that is rotten under the old gutters?
Stop, photograph it, and send a priced change order before you replace any board. Do not hang new gutters on wood that will not hold a fastener.
Should I offer seamless gutters?
Offer them if you have the equipment and the customer wants fewer joints. Explain the trade-off in writing, including where the seams are and how they are sealed.
About this guide
This national guide is written and checked by infinibell. Rules and conditions differ by place, so local pros are credited on guides for the cities they serve, not on national ones.
Edit history
- Oct 29, 2026: Drafted by infinibell to our content guidelines.
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