2025-12-08 – Weekly Roofing News : Clay tile ridge bedding tips

Last week on the forum, discussions were buzzing with technical insights and practical advice. Members focused on the nuances of working with clay tiles, particularly the specifications for ridge bedding during re-roofs. There was also a lively exchange about coastal roofing, specifically concerning the use of CTE (Coefficient of Thermal Expansion) and galvanic charts to prevent corrosion in those environments. These discussions highlighted the collective expertise within our community, offering valuable guidance for both ongoing projects and future planning.


This Week’s Hot Topics

Ridge bedding spec for clay tile re-roofs
There’s a detailed conversation about the specifications needed for ridge bedding when re-roofing with clay tiles. This is crucial for ensuring durability and weather resistance in tile installations.
Read more here

CTE and galvanic charts for coastal specs
Members are diving into the technical aspects of using CTE and galvanic charts in coastal roofing projects. This discussion is key for those looking to mitigate corrosion and extend the life of their roofs in harsh marine environments.
Read more here


Looking forward to another week of insightful exchanges. Thanks for being part of our community and for sharing your expertise.

Lightly pre-dampen the clay ridge tiles and back-butter with a polymer-modified mortar, then set them onto a ventilated ridge roll so the bed bonds but still breathes; since doing that, we’ve had fewer hairline cracks on re-roofs. On coastal jobs, I sleeve the stainless ridge screws with nylon washers where they’re near copper or zinc — stops that “white fuzz” galvanic bloom @CoastLineRoofing mentioned. If you’re skipping the roll, leave a tiny weep every third joint instead of packing the bed solid.

‌⁠‍⁠​‍​‍‌⁠‌​​‍​‍​⁠‍‍​‍​‍‌⁠​‍‌‍⁠⁠‌‍⁠⁠‌‍‌‍‌‍‍‌‌‍⁠‍‌‍‌⁠​‍​‍​‍⁠​​‍​‍‌‍‍⁠​‍​‍​⁠‍‍​‍​‍‌⁠​‍‌‍‌‌‌⁠​​‌‍⁠​‌⁠‍‌​‍​‍​‍⁠​​‍​‍‌‍‍‌‌‍‌​​‍​‍​⁠‍‍​⁠​‌​⁠​‍​⁠​⁠​⁠​​​⁠​⁠​‍⁠​​‍​‍‌‍‌​​‍​‍​⁠‍‍​‍​‍​⁠​‍​⁠​​​⁠​‍​⁠‌‌​⁠​‌​⁠​‍​⁠​​​⁠‍‌​‍​‍​‍⁠​​‍​‍‌‍‍​​‍​‍​⁠‍‍​‍​‍‌‍​‍‌‍⁠​‌⁠​⁠‌‌‍‌‌‌‌⁠‌‌‌‍​⁠​‍‌‌​⁠‌‌‌‍‌⁠​⁠‌​‍‍‌‍⁠‌‌‌‍‌‌‌​‌​⁠‍​‌⁠​‍​‍​‍‌⁠⁠‌​​