Tested and certified

All of our windows and doors have been thoroughly tested in-house by their manufacturer, Sierra Pacific Windows. Third-party testing, inspection, and certification also takes place through the United States Window and Door Manufacturer’s Association (WDMA) Hallmark Certification Programme, an international certification programme similar to CodeMark Certification in Australia and New Zealand. Many of our windows and doors have been NFRC and Energy Star tested and certified as well.
Technical specifications are available through Sierra Pacific Windows, and we are happy to provide your council with any information they may require.
Visit Sierra Pacific Windows Technical Library

uPVC is our most energy efficient window and door!

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