Weight Of 3 Layer Felt Roof System

If the slope is greater than 4 12 which provides more water drainage from the roof use one layer of 15 felt.

Weight of 3 layer felt roof system.

Fitted using a blowtorch the 3 layer felt roof system benefits from being more stable than the older methods. Anderson tecnatorch sbs torch on mineral felt capsheet is used as the final layer of the felt roofing process. Use our table below to compare membrane thickness and weight for our range of flat roofing. This type of felt roof comes on rolls and is laid with the aid of a very large blow torch that heats and melts the rear of the felt melting it onto the roof structure below.

If the slope is between 3 12 and 4 12 use two layers of 15 felt for asphalt shingles. None asphalt roll roofing 1 1 lb m ft 2. The 3 layer felt roof system is also versatile when it comes to appearance. Don t forget to add all roof assembly materials when calculating total roof weight.

Felt tar and slag roofing 3 ply 4 5 lb m ft 2 22 kg m 2 felt tar and slag roofing 4 ply 4 8 lb m ft 2 23 4 kg m 2. Please contact us if you have any queries by clicking here. Atlantic single ply system 17000 system 17000 plus system 5000 classic commodity systems. This includes the roof deck and the supporting structure typically roof trusses and or rafters as well as the roof system itself.

Of course how many rolls you need will depend on the size of the roof so ensure you measure correctly. The weight of roofing constructions above the truss rafter may be estimated with the calculator below. Second layer is a sanded underlay which is to. It s available in rolls that are 8m long and 1m wide with a thickness of 4 2mm mineral or 3 8mm sand.

Three layer felt system. The products used today are a 3 layer membrane system applied with the use of a gas gun. Three layer felt systems have come a long way from the early days. When it comes to estimating the weight of an existing roof field verification of the in place construction is necessary.

You can return to viewing our roofing products by clicking on the below titles. Melt the bitumen by heating on the underside of the membrane from a gas torch. The type and amount of roofing felt to apply varies according to roof slope. They are no longer laid with hot bitumen and have stone chippings put on top.

3 layer felt roofing system expert installation of 3 layer felt roofing systems the first layer is a 3g perforated membrane felt which is loosed lay onto the primed deck.