Roof And Ceiling Mass

The average roof is 3 000 square feet or around 30 squares.

Roof and ceiling mass.

Typical recommendations for exterior walls are r 13 to r 23 while r 30 r 38 and r 49 are common for ceilings and attic spaces. The massachusetts state building code 776 780 cmr seventh edition 12 28 07 1 1 08 ceiling roof area of the addition combined. Depends on roof and ceiling mass kg m2 below are only typical roof construction examples and may differ in your situation i didn t include tiled roofs which are higher numbers metal sheet tiles or medium gauge corrugated iron battens 12mm softwood ceiling lining sarking lightweight insulation 20kg m2. Collar ties rafter ties tension beams structural ridge beams.

Weight kg m 2 code. If your ceiling has a plastic vapor barrier between the drywall and the attic insulation push the insulation aside and look for flow stains on the plastic often water runs to openings in the vapor barrier such as at ceiling light fixtures. Open pdf file 163 kb for 780 cmr ninth edition residential chapter 8. As1170 1 2002 ta2 92kg m 2 per 100mm.

Stratco ceiling battens at 450 centres 0 35 0 45 0 78. Ninth edition of the ma state building code 780 chapter 7. Some of these can support the roof and prevent ridge sagging and wall spreading. Weights of building materials in walls.

Roof ceiling construction amendments pdf 163 kb this is part of. Sometimes the water shows up at a ceiling spot distant from the leak. Roofing material is estimated by the square which is equal to 100 square feet. Components of roof ceilings shall be fastened in accordance with table r602 3 1.

Depending on where you live and the part of your home you re insulating walls crawlspace attic etc you ll need a different r value. Many homes have an asphalt shingle roof but some have wood metal tile and slate which can be more expensive. Some roof leaks are tough to locate. If any individual fenestration component exceeds the maximum u factor listed in 780 cmr table 6101 3 then the area weighted average u factor for all fene str ation c omponents must be less than or equal to the listed value.

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