Download the mcelroy metal retrofit roofing guide to learn more.
Retrofit installation pitched roof.
Once these and other pre installation steps are successfully completed the low slope roof retrofit can begin.
The importance of engineering the new retrofit framing system is hallmark to the overall project.
Mcelroy metal retrofit roofing systems are engineered to adapt to the existing roof s structural support system whether constructed of steel concrete or wood.
U value target u values normally achievable for the rafter level insulation of a pitched roof are between 0 20 0 16 w m2k depending on existing rafter depth and available space.
In an un ventilated roof moist air is passed from the roof construction through the breather membrane out into a ventilated air space formed by counter battens.