This saves you even more time. Also, workmanship is never compromised. With our 25 years of experience in South Florida, we have extensive professional experience with both roofing contractors and roofing products. The quality of our product speaks for itself. Have questions or concerns? Reach out to us at or follow us on social media to learn more.
Do you want more helpful information about underlayment products? A proven mechanical attachment with self-adhering technology that can be installed with any steep slope roofing products. For more info call us at Roofing Felt Vs. Spread the love. Other Info. Most residential rooftops use 15 or 30 pound roof felt. In drier areas, lighter roofing felts may be used.
The felt layer may also be available in a number of different widths — a common width size is inches. While smaller widths may be necessary for delicate work, larger widths are advantageous because you can cover a roof with felt and leave fewer seams behind.
Fewer seams means fewer possibilities for those weak points to develop leaks. What type of felt underlayment do you need? Generally if a rooftop has a slope of or higher , a single layer of pound roofing felt is ideal.
Lower slopes generally need a double layer or weightier felt, because it is easier for water to seep into these rooftop areas instead of quickly draining down into the gutters. Weather also plays an important role in felt decisions.
Heavier felt or extra layers are important if you live in an area that gets snowfall each year, or one that faces heavy winds, which can drive water up between shingles.
Ice and snow may also be a sign that you need extra membrane layers, especially at the edges of your roof. Photo Source: Flickr. Although most commercial buildings use flat roofs, there are several different commercial flat roof types.
Roofing Nails. See all. Roofing felt keeps flat roofs watertight and has been used for over one hundred years. There are three types of roofing felt to consider for a roofing project; torch-on felt, self-adhesive felt and shed felt.
Torch-on felt sees three layers of bitumen felt melt-welded onto the roof with a blow torch, creating a waterproof seal. Traditionally, these layers are made up of a vapour control sheet, reinforced felt and a cap sheet with a mineral finish.
However, for sheds and garages, only two may be required. While this is one of the most reliable flat roofing solutions, it can be dangerous. This is cheaper than alternative flat roof coverings such as fibreglass. The lifespan of a torch-on felt roof is in the region of years. It allows the roof covering to be laid without the need for naked flames. Once the release film is peeled off the bottom, the roof felt will self-bond to the substrate.
This makes it ideal covering for small projects such as domestic flat roofs, garages and porches. Shed felt is a roofing felt option suitable for sheds and garden buildings. These days roofing felt is largely made of modified bitumen mixed with either fibreglass or polyester. The combination of this and modified bitumen means felt roofing is tough, reliable and has a good lifespan. While polyester and modified bitumen form a sturdy roof, it requires a final layer to protect it from the elements.
Extreme cold can have a negative impact on felt roofing , but sunlight is the main enemy. It dries out the oils in the system making it brittle and can cause heat expansion movement too. These problems can be alleviated by adding a surface protection layer.
There are many different options for that final protective layer including lead flashings and labour-intensive solar reflective paint. However, a mineralised cap sheet will give you an attractive, maintenance-free finish.
Felt is a low-cost roofing system that consistently performs. As a material, felt is easy to work with and easy to transport, making it a great do-it-yourself option for those embarking on a self-build project.
Repairs can be addressed easily using weatherproof paint and sealant, keeping costs to a minimum. Adding felt to your roof gives it a nice aesthetic appeal. While felt roofs tend to last between years, many can be recycled at the end of their lifespan, making this an eco-friendly option.
Like any roofing option, there are advantages and disadvantages of using roof felt. After a series of repairs, it might be worth considering replacing the roof to restore it to its full potential. The intense heat of summer and the harsh cold of winter can lead to weather damage which can weaken the structure.
There are many factors to consider when determining the lifespan of a flat felt roof. However, felt is extremely durable. The guarantee you get will depend on the manufacturer, but they usually offer at least 10 years of cover on a felt roof. With a typical lifespan of between 10 and 30 years, it can be hard to know exactly when your felt roof should be replaced. However, nearing the end of its lifespan is not the only reason a felt roof needs replacing.
Weather damage and organic growth can signify a replacement is imminent. Probably one of the easiest problems to spot, tears and cracks can be caused by weather damage or potentially even the age of the roof. While small tears can be repaired cheaply and easily if a split appears across the entire surface of the roof you should consider a replacement. In this situation time is of the essence, as failing to address a large tear promptly means moisture could seep in creating water damage in your home.
When detected in the early stages this is easily repairable, but if left to develop the blisters can grow so large that the entire roof will need to be replaced. The other issue here is the potential for a blister to pop, which would create a hole in the flat roof.
Although, this generally only happens due to poor installation or inadequate ventilation in the construction stage. When water is left standing on felt it causes additional stress to the roof and can result in cracking and water penetration. Calling in a specialist is the best way to try to save the roof, but if the problem has been developing over time you might find replacing the roof is the only option available.
A build-up of moss and algae might not seem like anything to worry about, but it does signify the retention of water on your flat roof. This will require the roof to be completely replaced. Of course, the presence of moss might not mean anything more serious is going on. To determine the roof area of one side of a slope, simply multiply the length of your roof by the slope height.
Most homeowners will have access to this information through building plans acquired with the property, but a local council should be able to help if this is not the case. Our guide to calculating the roof area for a project provides more information on how to measure your roof. EPDM rubber roofing has an impressive life expectancy at around 50 years. It repels moisture well and looks aesthetically pleasing, but the installation process is a lot more involved and typically requires a roofing specialist.
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