An airspace against either side of a radiant barrier enhances its effectiveness dramatically. Internally, my company has done some testing showing some efficacy of a radiant barrier in a tight sandwich of materials but many people would dispute that. And, again, an airspace helps dramatically.
I have read conflicting advice regarding the utility of applying a reflective thermal barrier beneath a standing seam roof. One version advises using an air space between the thermal layer and the roofing. Another advises direct contact between the thermal layer and the roofing. Is there any research to resolve this issue?
Research suggests varied approaches: some advocate an air gap for improved insulation and moisture control, while others endorse direct contact for better thermal performance. Context-specific factors like climate and materials impact effectiveness, indicating the need for case-by-case analysis for optimal results.
Hello. I have a roof valley that leaks quite badly and would love some advice on fixing this as I plan to have a go myself. Where is the water likely to be coming from and will it help if I replace the felt underneath on that section. Any advice would be most grateful. Thanks
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