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Top-Rated Roofers in Cranbury - Updated Nov 2026

Avatar for Roof 2 Roof LLC
Roof 2 Roof LLC
5.0(
39
)
Asphalt Shingle Roofing - RepairNatural Slate Roofing - RepairAsphalt Shingle Roofing - Repair - For Business+3 more

Serving Cranbury, NJ and surrounding areas

Approved

Super Service Award Winner

In business since 2017

Free estimates

Warranties offered

"Roof 2 Roof did an outstanding job replacing our roof. The crew was professional, hardworking, and completed the project on time. They kept everything clean throughout the job and the quality of the workmanship exceeded our expectations. The new roof looks amazing, and the entire process was smooth from start to finish. I highly recommend Roof 2 Roof to anyone looking for a reliable roofing company. Thank you for the excellent work!"
New Roof
New Roof
New Roof
Response time8 hrs
Response rate98%
17 neighbors recently requested a quote
Avatar for Black Rock Exteriors, LLC
Black Rock Exteriors, LLC
4.9(
69
)
Asphalt Shingle Roofing - RepairSealant for Roof - ApplyFlat, Foam or Single Ply Roofing - Repair+3 more

Serving Cranbury, NJ and surrounding areas

Approved

In business since 2009

Free estimates

Emergency services offered

"I had a roof leak at my house on three different spots and the roof was like 35 years old and needed to be replaced. I hired black rock exteriors to install my roof. They did a very good job quick and clean better than it was before I?m very happy with the priceand with a job thank you."
Response time7 hrs
Response rate88%
5 neighbors recently requested a quote
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Roofing FAQs, answered by experts

In general, you should consider replacing your roof if more than 30% of it is damaged. This includes several missing shingles, large spots of granule loss, extreme curling or cracking, structural damage to the roof's decking, or multiple areas of leaks. All of these issues could indicate compromised structural integrity that requires roof replacement.

A roof replacement can take anywhere from one to 14 days. For most homes, a full replacement that includes tearing off old materials takes about one to two days, though the average project can last up to 12 days. The exact timeline depends on several factors, including the roof's size and complexity, the type of roofing material, the crew size, and weather conditions. Certain materials take longer to install; for example, metal roofs can take seven to 14 days because the material is more difficult to work with than asphalt shingles, wood, or tile. A re-roofing project, where new shingles are installed over old ones, can take half the time or less. It's also important to factor in the time needed to obtain necessary permits. A professional roofing contractor will typically complete the job faster than a DIY approach.

An insulated garage benefits from roof vents to ensure proper ventilation and prevent moisture buildup. Insulation can trap moisture in the garage, especially during temperature fluctuations, and roof vents play a crucial role in expelling the moisture in the air. Including roof vents promotes air circulation, preventing condensation and enhancing overall air quality.

In some cases, yes, you can put a second roof layer over architectural shingles, but it depends on your home’s structural stability and the local building codes where you live. Architectural shingles are thicker and heavier than standard asphalt shingles, so you may need structural reinforcement or a structural engineer’s inspection before proceeding. Additionally, some building departments don’t allow for two roof layers, regardless of the roof type. You should ask a professional if ripping the old roof off before installing the new one is the best option for you.

The golden ratio for roof pitch is 1:1.62. It’s simply a standard aspect ratio that home and building designers and architects use when deciding how steep a roof should be to maintain visual appeal. The golden ratio can apply to any home or structure with a visible roof that isn't considered a flat roof.

The Cranbury, NJ homeowners’ guide to roofing services

From average costs to expert advice, get all the answers you need to get your job done.