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.
For the most part there are two types of rubber roofing used in the RV industry: Ethylene Propylene Diene Monomer (EPDM) and Thermal Poly Olefin (TPO). The problem is each type has its own unique characteristics and care and maintenance requirements, but most RV owners donât know which type of rubber roof they have.