/ Installed. Verified. On record.

Systems specified and delivered across every build type

Domestic retrofit to commercial façade. Each entry records the system, opening count, thermal target met, and installation timeline—no staging, no omissions.

Completed installations

Real buildings. Published performance data.

— Project records

Every project tile carries the system profile, certified U-value, opening count, and on-site programme duration. No thermal compromise, no approximations—transparent technical data so you can match against your current job requirements.

Specification data, not sales copy

Systems span domestic retrofit through to large-volume commercial façades. If a comparable project type is not yet listed, contact the technical team directly with your specification.

Confirm Castle meets your current project requirements

Supply the system type, opening count, and thermal target. The technical team will confirm availability, lead time, and installation-ready geometry within one working day.