Structurally insulated roof panels (SIRP) are a welcome addition to any building plan. They consist of an insulating layer of rigid core sandwiched between two layers of metal or structural board. They are lightweight hence easy to assemble on site, yet they also have superior durability and strength. The panels are also able to withstand extreme weather conditions. Despite their outright simplicity and countless advantages, many people make grave mistakes when acquiring SIRPs. If you are interested in setting up such a roof panel for your home, here are some major mistakes you should avoid.
Ignoring the colour
The colour of the insulated roof panel in very important when making a selection. Some people dismiss colour as a factor only associated with aesthetics. This is far from the truth. The outer layer normally absorbs heat from the sun while the inner layer retains the ambient temperatures. If the temperature difference between the two layers is high enough, the stresses experienced may damage the whole panel. Using dark, absorptive colours for the outer layer only compounds this problem. Ensure the colour is compatible with the environment you live in. Use reflective colours such as silver for the outer layer of the SIRP where solar heat is a major concern
Failure to employ proper joinery guidelines.
The insulated roof panels work as an insulator as well as provide a barrier for both air and water. In order to ensure the panels are remotely effective, the joints between them should be seamless. Failure to do this will compromise the integrity of the panels as a whole. When purchasing SIRPs, get the specific manufacturer's joinery guidelines to do the job. Some companies may even use specific joinery systems only for their products. Therefore, using general sealants and gaskets then opting to bumble your way through the process will cost you. Instead, follow the manufacturer's guidelines to the letter, or allow them to make the installation when you're unsure of your abilities.
Failing to account for expansion and contraction.
The insulated roof panels are liable to expand to a greater extent than other construction materials such as wood. This is due to the panel's constituent materials and the multiple layers involved. The overall design of the panelling should account for these changes as the temperatures fluctuate. Ensure the sizes of your SIRPs are correct for your roof. The joints between them should also be flexible enough to accommodate the movements but still able to maintain the integrity of the panelling.