Weight Of Roofing Felt Psf

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Weight of roofing felt psf.

By shifting the pound symbol 15 felt became 15 felt which may actually weigh 7 5 to 12 5 pounds per square. 30 felt can weigh between 16 and 27 pounds per square. Please contact us if you have any queries by clicking here. 3 ply ready roofing 1 0psf 2 15 lb 1 90lb 1 7psf 3 15 lb 1 90lb 2 2psf 3 ply gravel 5 6psf 4 ply gravel 6 0psf 5 ply gravel 6 5psf.

The following table provides typical weights dead load self weight for various roofing materials where possible the values were taken directly from manufacturer technical data sheets and are the actual weights of specific representative products. Simple math shows that a single layer of 30 felt today could weigh more or less than two layers of 15 depending on which end of the min max spectrum the two types of underlayment fall. On a roof with a slope greater than 4 to 12 the live load limit is typically adjusted downward from 20 psf to 15 psf to allow for the relatively greater dead load on the steeper roof. Use our table below to compare membrane thickness and weight for our range of flat roofing.

The best weight for roofing felt is the 30 pound product because it provides thicker and stronger footing for roofers that does not tear out especially on steep roofs where footing is critical. You can return to viewing our roofing products by clicking on the below titles. 2 4 1 2 0 9 0 8 0 6. Atlantic single ply system 17000 system 17000 plus system 5000 classic commodity systems.

2 10 3 1 2 3 1 9 1 5. Weights of building materials. In the past couple of years many of you have pursued bid work primarily because the current market for our traditional design build business has dramatically declined. 2 8 2 4 1 8 1 5 1 2.

These values are expressed in pounds per square foot psf and are found in the asce 7 05. Step 2 calculate the live load of the roof. Weights shown are for douglas fir larch g0 50 which is conservative for most structures.