Weights of building materials in walls.
Roof and ceiling mass.
Some of these can support the roof and prevent ridge sagging and wall spreading.
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Sometimes the water shows up at a ceiling spot distant from the leak.
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.
This article describes and illustrates the different types of support that prevents roof sagging and wall bulging at buildings including definitions of collar ties rafter ties and structural ridge beams.
Many homes have an asphalt shingle roof but some have wood metal tile and slate which can be more expensive.
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.
Some roof leaks are tough to locate.
Ninth edition of the ma state building code 780 chapter 7.
Roofing material is estimated by the square which is equal to 100 square feet.
Roof ceiling construction amendments pdf 163 kb this is part of.
Miscellaneous components in addition to other roof components.
As1170 1 2002 ta2 92kg m 2 per 100mm.
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.
Stratco ceiling battens at 450 centres 0 35 0 45 0 78.
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.
Weight kg m 2 code.
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.
The average roof is 3 000 square feet or around 30 squares.
Collar ties rafter ties tension beams structural ridge beams.