Close-up of a brown shingled roof with two terracotta-colored ventilation caps under a clear blue sky

Enhanced Roof Ventilation and New Shingles Solve Moisture Issues in Topsfield Cape

The Challenge

A homeowner in Topsfield contacted Master Roofers after noticing moisture problems in the attic and water stains on the second-floor ceiling. The home was a Cape-style house built in the late 1930s or early 1940s. Over time, remodeling and an addition had altered the home's ventilation system, resulting in condensation buildup, moisture accumulation, and rusty nails in the attic.

The root cause was the loss of a gable end vent during the addition, which was not properly compensated for by enlarging other vents or adding new ventilation. The attic was warmer than normal, worsening the moisture issues. The homeowner found Master Roofers through a referral from a family member pleased with our work.

The Solution

After a thorough inspection, we recommended reroofing the house with GAF HDZ architectural shingles for improved durability and curb appeal. We installed a ridge vent along the roof peak and soffit vents at the eaves to create a balanced airflow system. The cool, dry air enters through the soffits and rises through the attic, exiting via the ridge vent, preventing moisture buildup.

We also addressed flashing issues around the addition where improper installation was contributing to moisture problems. By carefully removing and reinstalling vinyl siding, we added ice and water shield membranes and proper metal flashing to ensure long-term protection against water intrusion.

The Installation

The reroof was completed smoothly and efficiently. The old asphalt shingles were removed, and modern synthetic underlayment was installed to allow the roof decking to breathe. New ridge vents were installed after cutting back decking where needed, and soffit vents were added to enhance intake airflow. The problematic gable end vent was closed off to maintain proper ventilation balance.

The flashing upgrades around the addition were handled without visible disruption, preserving the home's exterior appearance while significantly improving waterproofing.

The Result

The homeowner, an engineer by profession, monitored attic temperatures following the upgrade and noted a dramatic temperature drop before summer arrived. This confirmed the effectiveness of the ventilation improvements. The moisture issues were resolved, no more nail rusting or water stains appeared on the second floor, and the home's exterior now features a fresh, attractive hunter green architectural shingle roof. The homeowner was very satisfied with the results and praised the professionalism and thoroughness of Master Roofers.