Oracle is the complete online calculator and compliance information site for window & door fabricators, installation companies and insulated glass unit manufacturers.
Acoustic calculator for Windows
Quickly and Accurately calculate acoustic values for Windows
U-value calculator for windows and doors.
Building Control compliance, FENSA & Certass approved
CE Marking 5 Step guide
CE Mark Doors and Windows with our 5 Step Guide
How it works
Calculations from the Oracle online U-value calculator are recognised by FENSA and Certass for their competent person schemes.
Once subscribed it’s quick and easy to assess product performance and is pre-loaded with product data for many popular window and door set suites from major PVCu window system companies and composite door system manufacturers.
Learn more about Oracle
System company data pre-loaded on the Oracle
What our clients say
Ramon Rabett - Technical Director at Master Frame