Roof Underlay Systems -Synthetic,Breathable,Non Breathable,Bitumen
Underlay- What it is and its purpose
Roofing underlay is the water-resistant barrier between your roof truss and roof tile.The primary function is to protect the roof truss from getting wet under heavy rain or storm situations and is an added layer of protection against the water that leaks past the tiles/ existing roof cover. Underlay is also a dust barrier and depending on product acts as an insulator to a degree if a foil variation is used.
The Most Common In South Africa is Membrane Based -Here is Why
Roofing Membranes are breathable roofing underlay systems which are both waterproof and at the same time prevents condensation and allows air to circulate. This is a felt type of product which is hydrophobic.
Different Types of Underlay and their Uses
This used to be the most popular choice for underlayment until it was replaced by synthetics. It’s usually known as tar paper or felt paper and it can be made from various mixtures of asphalt, polyester, cellulose, or bitumen.
All types of underlayment are made with a basement, which acts as a flexible base layer. In the felt paper, this basement achieves water resistance with a saturation of asphalt.
2. Rubberized asphalt
This tends to be the most expensive option for underlayment due to higher amounts of rubber polymers and asphalt. This mixture creates a 100% waterproof seal but comes with a steep cost in price.
3. Synthetic underlayment
This is currently the most popular choice for underlayment, and with good reason. Made with an asphalt-saturated basement and fortified with a mix of fiberglass, this product is not only extremely water-resistant, much stronger and more resistant to tears than other types of underlayment.
The highest quality versions of synthetic underlayment also feature anti-slip properties.
Okay - So about the Repair & Why We different
We strip completely, but with you in mind
Assuming that we dealing with your home roof for instance.
One hears of these horror stories where the contractor rips off the entire roof, then covers it with plastic or tarpaulin strapped to the trusses. It then rain in between there are holidays and not to mention depending on seasons you either getting dew/rain or heavy winds and that's excluding the crawling things and mosquitoes , so you get the point
We will still have to perform the strip and rebuild but stage it, it takes a little longer but, WHAT WE STRIP WE REPAIR WHAT'S NEEDED AND FIT THE NEW UNDERLAY AND REASSEMBLE IN THE SAME DAY. This is so when you get home you all closed up and safe as well as happy, you won't even know e busy by the nonintrusive manner we carry the replacement out in.
Is this A Big Job ? | I hear the roof comes off !
We have a section on our website Tips on choosing the Right Company.
Answer: Not if its regular work is done by the person doing it. - You still cant wing it though, Its not as simple as taking of things and putting them back in the same place.
The horror stories on hears are true, however. When at the quote stage ask questions. Get A Feel for the contractor | company quoting. Get the details from the last underlay job they did and call them , there is nothing with that, if you get the wrong guy yes it'll get expensive and it will have to be redone properly - roof only go back together leak free one way, and that's when firstly its looks right to start with .
A company that does a lot of underlays he's systems and little checks, that's why they so much quicker . You need to do it regularly yo do it well, not have leaks and most important do it in a time frame that's proportional to the job cost