Ceiling Insulation. A high density, two-component Spray Polyurethane Foam (SPF) - must be applied to the underside of the roof, this is to be 20-30mm thick and as per requirements for the application of the SPF Foam - The ceiling system must perform adequately in terms of fire propagation properties according to the SANS 428 protocol, using the test specifications as contained in SANS 10177-10:2007 SOUTH AFRICAN NATIONAL STANDARD. Fire testing of materials, components and elements used in buildings. Part 10: Surface burning characteristics of building materials using the inverted channel tunnel test. - A gypsum ceiling board must be at most 6.4mm in thickness and have an R value of 2 or above) for cold area, system should be affixed with steel branding to roof purloins directly under and at pitch of roof. - Finishing strips/cornices should be fixed to ceiling boards (and not to walls), - The gypsum ceiling board should be finished with a non-acrylic ceiling paint. - The required gypsum board to be used must be standard for all households.
Ceiling Insulation. Ceiling insulation shall be installed only if the pre-retrofit insulation level is less than R-12. Attic insulation may not be installed if any of the following conditions is present: the roof is leaky or shows signs of water damage from leaks; adequate venting is not present and can not be installed per installation standard attic ventilation guidelines; hazardous electrical wiring or other hazardous conditions are present; an enclosed cavity as defined in the installation standards is present; exhaust vents terminating in the attic can not be vented to the outside by reconnecting vents or addition of exterior venting under minor home repair; disconnected or damaged space heating / cooling ducts are present and can not be repaired; all required blocking/shielding can not be installed; an inspector can not gain safe physical access to all treated areas of the attic; there is less than 24” clearance between top of floor joist and bottom of ridgebeam rafters; interior or xxxxx access meeting installation standard guidelines is not present and can not be installed; non-structural obstructions are present; a substandard framed structure that will not support the weight of the insulation and installer is present. Moreover, attic insulation may not be installed if knob-and-tube (K&T) wiring is present and either the knob-and-tube wiring is functional but can not be certified safe by a C-10 contractor and meet all CEC 324-4 provisions, or K&T wiring is abandoned but has not been disconnected and/or certified as abandoned by a C-10 contractor; or insulation over K&T wiring is prohibited by local codes (Llive or dead). The Implementer is responsible for ensuring that the installation of ceiling insulation will not result in a hardship or an inability to perform maintenance in an attic. If the Implementer fails in this responsibility, the Implementer will be held accountable for the correction.
Ceiling Insulation. Where permitted by code furnish and install R-19 (or as required by the energy compliance calculation), unfaced fiberglass batt insulation on top of the suspended acoustical ceiling at conditioned spaces.
