Shaw Construction and Property Maintenance | General Contractors & Roofing in South Portland, ME 04106

We use a multi-step approach tailored to our coastal climate. After safe removal, we apply zinc or copper-based treatments at the roof's ridge. These strips slowly release minerals with each rain, creating a long-lasting barrier against moss and algae. We also recommend trimming overhanging branches to increase sun exposure and improve airflow, which are key to keeping your roof dry and moss-free.

It depends on the extent of the damage. For isolated curling caused by moisture or poor attic ventilation, we can often replace individual shingles and address the underlying ventilation issue. However, widespread curling across the roof plane often indicates aging or manufacturing issues, signaling that a roof replacement is the most cost-effective and reliable long-term solution for your home.

Late spring through early fall is ideal. The drier, warmer weather allows for safer working conditions and ensures sealants and adhesives cure properly. Addressing these issues before winter is crucial, as moss holds moisture against shingles, accelerating decay, and curled shingles are more vulnerable to wind uplift and ice dam damage during our harsh winters.