PVC Weston, MA Roofing Repairs and Installation
Before the PVC roof membrane installation, it is usually necessary to install any type of insulation board. So we did while Weston roofing repairs, Massachusetts. Most commonly, this is either EPS foam or ISO insulation. These two types of insulation boards have R-values that range from 4 to 6. They are important because they help reduce the heat loss and provide a more stable and long-lasting solution.
Various ways to install PVC roofs | Weston Roofing
A wide range of methods can be used to install a roof membrane made of PVC. The most common method is to use a hot-air welder. This ensures that the seams are strong and prevent wind blow-off and leaks. When it comes to choosing the right time to install the roof, it is important to consider the temperature of the welder. Since the temperature of the welding process is very important to ensure that the bond is strong, it should be adjusted upward in the winter.
The use of hot-air welding on all types of roof surfaces ensures that the material overlaps will last longer than those on other types of roof systems. This method is also more cost-effective compared to the use of solvent-based glue. Since it can be done in the winter, it does not require the use of adhesives, which can prevent the installation or repair of the roof.
Weston roofing repairs – Fully-Adhered Assembly
A simple method of installing a roof membrane using a special adhesive is usually done by attaching a membrane to the substrate using a short strip of adhesive. However, this method can be very dangerous if the membrane gets loose due to the presence of moisture under it. This can cause the adhesive to break and allow wind blow-off.
Although the wind’s chances of causing a blown-off roof are very small, the consequences of this can be severe. It can cost thousands of dollars to replace a damaged roof. To minimize the risk of this happening to your property, you should use a full-adhered method of roof installation.
This method is usually recommended in case the PVC membrane can’t be easily attached using screws and other types of hardware. In this case, you should first attach the insulation board to the roof using adhesive. This method we used while Weston roofing repairs and it will allow you to minimize the damage to the roof deck.
A fully-adhered roof membrane should be installed along the perimeter to improve the wind uplift and prevent the formation of flutter. This method eliminates the risk of this happening in a mechanically-attached system.
Caution: The use of a fully-adhered roof membrane should only be performed if the ambient temperature is at least 40 degrees Fahrenheit. If the temperature reaches over 40 degrees, the adhesive will freeze and cause delamination and bubbles.
Mechanically-Attached PVC roof
Another way to install a fully-adhered roof membrane is by using barbed plates and heavy-duty screws. This method ensures that the roof will not be torn off by the wind. If you are located in an area with high wind speeds, this method is ideal.
Ballasted Installation PVC
A ballasted installation is similar to a traditional roof membrane installation in that it involves laying the roof membrane across the substrate while it is held in place using a ballast. This type of roof membrane is usually made of materials such as washed river rock and concrete pavers.
PVC Roof Installation in Weston | ID Flat Roof MA
Unlike majority of home owners our client really did his homework. He had a problem with his rubber roof (which was only a few years old and yet had multiple leaks along the skylights, chimney and lower side of the roof) and was looking for a permanent and more efficient solution. He already knew about the material, so after some consideration we decided to go with 50-mil white PVC Membrane, mechanically attached.
Another issue that he had was the upper bedrooms getting too hot during the summer, so 3.3 inch ISO insulation was chosen to address that. Another reason for choosing such insulation was the 30% tax credit that Massachusetts offers.
As the two layers of old roof were removed (old rubber and rolled asphalt under it) we discovered that there was significant water damage to the roof deck.
Water was getting under the rubber constantly, so some of the fascia boards had to be replaced and new 3/8 inch plywood was installed over the old roof deck.
While roof repair Weston, we also decided to raise and tilt all three skylights to prevent them from getting covered with snow during the winter, so the new skylight curbs were built.
Tilting the skylights also prologs their service life, because if they are too flat water would sit on its surface for a long time, little by little getting under the rubber seal and gradually destroying it especially during the winter time. And finally 3.3 inch pressure treated parapets were built along the perimeter of the roof to match the new insulation height and also to serve as a nailer for the drip edge.
In this Weston roofing the PVC membrane was installed using the mechanically attached method, pre-manufactured PVC flashings were used for the pipes and the 6 inch PVC pipe that was installed through the roof for the future range hood.
Skylight curbs and chimney were flashed with the same membrane as the main roof using pre-manufactured outside corners.
Aluminum counter-flashing was installed on the chimney. Gravel stop was installed along the three sides of the roof to prevent water getting off the roof on the sides and regular drip edge was installed along the lower side.
New aluminum fascia was also installed to cover up the new parapets and finally new 6 inch seamless gutter with two 3×4 inch downspouts was installed to handle the water load from the roof. This Weston roofing project was done in late November with temperatures swinging around 32 degrees Fahrenheit – well below the threshold allowed for EPDM rubber.
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