Sorting Arrays. PHP has several functions that deal with sorting arrays, and this document exists to help sort it all out. The main differences are: Some sort based on the array keys, whereas others by the values: $array['key'] = 'value';
Can I install Roof-TopÂ® EPDM membrane directly over an existing roof? You can install Roof-TopÂ® EPDM membrane over an existing roof only if a new layer of 5/8â plywood, 5/8â OSB board, or polyisocyanurate board with a fiberglass backing is used as a barrier to protect the EPDM.
Roof deck timber choice for EPDM. If you are fitting a one piece EPDM roof then you will need to glue it down, unless itâs ballasted or mechanically fixed (more on this later). The trouble with this is that the glues used in rubber roofs do not like the presence of contaminants such as bitumen or asphalt.