Laying New Roof Over Asbestos

This is especially true when it comes to asbestos cement roof coverings.

Laying new roof over asbestos. This is a cost effective approach with an aesthetically pleasing and watertight result. Once again thickness can be a consideration as is the amount of maintenance that natural stone requires such as sealing and cleaning with stone cleaners. When overcladding an asbestos cement roof it will also be necessary in most cases to include a layer of insulation to meet current day building regulations. This means the new roof cannot get enough stability on top of the old one a common risk of over cladding.

This practice is not recommended for a number of reasons. Also heavily corrugated or textured vertical seam products might do well. The insulation is then installed into the framework often an ashgrid system so named after the original manufacturer ash lacy construction and the metal weather sheet is the fixed to a bar. First the siding installation process itself nailing into the existing boards or tiles is enough to disturb the existing material and create a dangerous condition.

I do suggest a layer of underlayment over the asbestos so that when you fasten into the asbestos you do not create any airborne fibers. My guess is that the asbestos is broken up enough at this point that if the metal panels are removed the asbestos will need to be removed as well. All shingle manufacturers honor the warranty whether their products are used for a reroof or a new roof. Asbestos over cladding in some cases asbestos containing materials need not be removed and can instead be over clad.

However many asbestos roofs are built with concrete portals meaning the roof is supported by a small number of concrete arches. Some people attempt to solve the problem of deteriorating asbestos siding by installing vinyl siding over top of it. If you are using an epoxy based thin set mortar and are willing to seal the tiles after installation natural stone tiles such as marble or granite can also be used over asbestos. Roof cladding requires bolts to be drilled into the asbestos roof.

The first stage is to fix a framework to hold the metal sheets in place directly to the purlins underneath the asbestos cement roof sheets. Next most of the modular shingle shake tile style products can be installed over asbestos.