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Somerset County Roofers: Article About Roof Construction

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Most newly built houses include standard 2 by 6 feet rafters that hold up the sheathing that creates the roof's sloped exterior surfaces. The interior space within the attic created by the rafters is an ideal location for placing rolls of fiberglass insulation. Many older homes have rafters that are smaller, which can cause a problem for meeting the U.S. Department of Energy's recommended thermal resistance values for the attic. By working with reliable Somerset County roofers, homeowners can have their rafters extended to create additional space on the roof's underside so that more insulation can be installed.

The most common method of extending the depth of the roof's rafters is for the roofers to use half inch thick wood cleats to secure 2 by 4 rafters to the existing 2 by 6 rafters. A framing nailer is the tool of choice for attaching the pieces of lumber. This tool allows the roofers to fire the nails at a rapid pace and to the correct depth into the beams. The cleats are installed on both sides of the rafters and are staggered to provide strength and support between the two larger pieces of lumber.

The roofers from Peter W Smith Construction in Somerset County NJ would be happy to answer any question you have about roof repair or commercial roofing.

Once all of the rafters have been extended in depth, then the roofers can start with the placement of more insulation.

Before insulation is purchased and cut to fit, the actual depth of the rafters must be measured, as a 2 by 4 piece of lumber does not actually measure 2 inches by 4 inches. Measuring first ensures that the insulation will not protrude out from the updated rafters. If the home already has rolled fiberglass insulation with a kraft paper facing, then an additional layer of unfaced fiberglass batt can be added right onto the top of the existing material. No additional facings are needed. The newly extended rafters should be able to accommodate an additional 8 inches of insulating materials.

When the attic has a different form of insulation, such as spray foam or loose fill, more of the same material can be used to increase the attic's R value. If desired, the homeowner can request that the roofers use a different material, so long as there is no facing between the two types of insulation.

If the attic's old insulation has been damaged by insects, mold or moisture, then it will need to be removed before any additional insulation is put into place. If the roof's sheathing or rafters are also damaged, then the roofers may need to perform some additional repairs before the new layers of insulation are installed.

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