Kingspan with a flat roof this issue does not arise but the u value constraint and the amount of insulation needed is just the same.
New roof insulation.
Installed a new fully adhered membrane to the top of the old board sheathing prior to adding all that rigid insulation.
This guide will help you make an informed decision when it.
Your roofing replacement is a great time for roof insulation.
Choose feldco roofing for your brand new roof.
If they do that there s a chance you might need to install new fiberglass batts rigid insulation or blown in insulation after the reroof is completed.
The later is used in new construction as the interior board serves as an inner wall.
Whether you re doing a weekend fix or folding it into a bigger home renovation insulating your roof will pay off for years to come.
Rigid foam board is just above the roof deck or an exterior insulation option.
On new build or replacement pitched roofs the ideal build up would be insulation fitted over and then between the rafters giving a big boost for airtightness image credit.
The roof can also significantly impact the appeal of your home in the eyes of potential buyers.
Gable end detail overhang cut and then rebuilt to hide the thickness of the over roofing rigid insulation.
It typically has 3 variations.
Roof edge detail overhang extended to hide the thickness of the over roofing rigid insulation.