Roof Underlayment

Synthetic roof underlayment

Roof underlayment types: three basic materials

  1. asphalt-saturated felt;
  2. rubberized asphalt;
  3. synthetic roof underlayment non-bitumen.

Black, ashphalt-saturated felt paper is one of the most prevalent kinds of roof underlayment used in housing, steep-slope applications. Around 15 years ago, it was the most common option. The implementation of synthetics began to be substituted. This material consists of different blends of cellulose, polyester, bitumen and asphalt, frequently known as “felt paper” or “tarpaper.” Every material has a base mat, which is the flexible base layer and is saturated with water resistance asphalt in this case.

Felt underlaying can be produced from organic substrate or fiberglass substrate, although organic substrate is much more prevalent.

Felt classes of at least 19 inches shall overlap with low-slope roofs, which include 2:12 to 4:12. The underlay over the entire ceiling is double layered. The upper felt underlaying paths should overlap at least 2 inches in steep pitch rooves (4:12 and steeper).

Felt underlayment Saskatoon
Felt can also be fitted with plastic caps in high wind regions. Plastic caps provide a stronger strength than staples to the wind, and help avoid leakage through the fasteners, hole.

Roof  underlayment: Edge Metal Laps

The underlay on the edge of the edge metal should overlay the eaves and be overlaid on the rakes with edge metal.This also applies to the underlay of rubberized asphalt but not necessarily to synthetic products.


Why does felt underlayment fail?

Asphalt saturated felt may fail for several reasons, but mainly because the roofer would use a poor quality one / unbranded.

There are several ASTM standards that give asphalt-saturated felt requirements.
Many companies manufacture “Underlaying,”
“15-lb” or asphalt saturated paper.

Polymer-modified bitumen

When referring to asphaltic roofing materails, the words’ modified bitumen’ are often used. The word “bitumen” is a generic name that is applied to different combinations of hydrocarbons, sometimes it is shortened to “mod-bit.” The underlying asphalt, the asphalt shingles, and built in roofing form one of these mixtures. In the roofing sector, this is a popular word.

Bitumen is sometimes altered with materials that provide it with plastic or rubber-like properties, depending on the method, to increase diverse features such as strength and elasticity. Polymers are materials made of molecules that have the particular characteristics of the material. In order to improve their resistance to damage and deterioration polymers are used for many distinct kinds of roofing products.

The word “cross-linked polymer” can also be heard. In cross-linked polymers, molecules effectively connect with each other at the atomic level; they share electrons, significantly increasing the material’s power.

The rubber-mounted asphalt rolls on one side of the roll can be fitted with a jelly rim. The jungle rim is intended to create a strong and water resistant screen along the corners of the rolls. When roof underlayment is mounted on courses across the ceiling, the jagged edge should always be at the top.

This is the most expensive roof underlayment type, and this is because it contains higher percentages of asphalt and rubber polymers. This mixture makes it completely waterproof.

Rubberized asphalt roof underlayment usually comes with a sticky back and a protective membrane that is removed before installation. This backing is the waterproof seal that separates the underlayment from the clean roof deck. Is the preferred underlayment option for valleys and roof protrusions.

Synthetic roof underlayment

Non-bitumen synthetic roof underlayment is produced of polypropylene or polyethylene.

The synthetic polymers are also used to produce a wide range of other goods, ranging from food storage containers to textiles.

Synthetic roof underlayment is the most common material available today and is used by most building and roofing professionals. The synthetic basepiece is saturated in asphalt and has an extra fiber glass blend to increase the tear resistance and product strength. High-quality synthetic underlay includes a shaft enhancement that decreases slip even when wet.

The use of synthetics has both benefits and disadvantages, like other roof underlayment products. They have lightweight and high power among their benefits. They are usually unskid as well.

Since they do not absorb moisture, synthetics are fungal resistant to development and free of wrinkles. Although it can be intended as humidity-permeable, the humidity obstacles are typically regarded. It is also extremely resistant to UV harm and, depending on manufacturer suggestions, can be left exposed to weather for a period of six months to a year.

Synthetic underlayment problems

Some synthetic underlaying issues exist as of 2010.

According to the Association of National Roofing Contractors: There are no ASTM standards relevant to these goods to date. The use of these underlayments can void certain manufacturers ‘ material safeguards for certain roof coverings (e.g. asphalt shingles). Many roof underlayments do not fulfill present construction code requirements.

Concerns from other sources include:

  • wicking can be a problem rather than a felt underlay. With certain kinds of synthetics, the installation along the roof eave is distinct. If the installer does not read and obey the manufacturer’s setup directions and instead installs the felt humidity issues.

Although underlay manufacturers can also produce housewraps of the same kind, underlaying demands of roofing do not fulfill housewrap. A faulty system is Housewrap mounted as a sublayer. Smaller than homewrap generally is thicker.

The pitch constraints of synthetic material will differ according to the maker. For low-slope roofs some indicate an increased overlap, and others do not.

A lot of synthetic underlayments have been designed to wrap the roof edges and protect the edges of the roof covering in order to avoid wicking moisture problems. The rim metal is mounted on both the eaves and the rakes over the bottom.

Clamping is usually performed with plastic caps or clothes. It is discouraged to use staps because synthetics do not auto-scell. In short, roofing underlayment is an essential component in order to resist the elements, protect the interior of a house and prolong the life of the roofing materials. The more an inspection officer understands the components of a roof, the better he can identify inspection problems and deficiencies.





Roofing contractors in Saskatoon: we pride our work

Roofing contractors Saskatoon

Agonized with looking through all the roofing contractors Saskatoon options?

So many  options out there, but it is not an easy decision. And I agree. 

But choosing the right roofing contractors in Saskatoon is not all about how big their team is, or how quick they are to come for an estimate. Most roofing contractors in Saskatoon provide free estimates nowadays, anyways. 

Looking through the options with your family, knowing that winter is coming and your roof must be looked after on time – yes it puts some pressure on your shoulders. You already have so many other things to worry about. 

But then, you see your neihhbour started doing work on their roof and the result is NOT what you expected. 

When quality meets glamour: roofing contractors Saskatoon with taste for aesthetic 

You wish your roof looked great, but also meet the quality standards so you don’t have to worry about it for the next century. And it’s perfectly O.K.

While the rest roofers would blame the weather, at Montbrun Roofing we know the truth. Not only quality materials are important, but also the correct use of roof underlayment.  Having so many years of experience as a Saskatoon roofing contractor, brought to my advantage the deep understanding and experience a professional can achieve only in time. 

 I am a local roofer in Saskatoon with over 27 years experience. I have been operating in Saskatoon, and having a main area of roof replacement in Saskatoon.

Installing a new roof is critical especially in areas like Saskatoon, where the cold is more pronounces, expecially during the winter time.

Although many families don’t ever look at their roofs, when a problem arrives, it is usually well felt exactly at the most inopportunated time. The best is to consider having your roof looked at for an estimation before the winter.

We provide quality roof replacement in Saskatoon

An old roof cannot hold against water to penetrate through. That means the inside of your home from the attic to the remodeled kitchen, right on through to the basement family room will be damaged. A failed roof is a major problem.

Don’t wait too long before the winter comes. Most companies charge higher for operating during off-season periods.

The truth is by not having your roof looked after, you risk having your whole home damaged during the winter.


Roofing constructor in Saskatoon providing services

The process for installation of a new roof takes up to several days. Most crews employ inexperienced labourers to get away with the project at a cheaper cost. At Montbrun Roofing, I make sure you receive the quality you pay for.

If you are looking for a roofer in Saskatoon, a Canadian fellow who understands your needs and respects the value of your home, don’t hesitate to contact me.

Please check the rest of my pages, where the roofing process is explained. You will be able to have a proper understanding of types of roof and materials hich are being used in the reparation or replacement process.

Expert roofer Saskatoon

It is not all about getting my paycheck. I have a keen sense of elegance and I understand why you want not just having your roof done – but having your roof done GLORIOUSLY . Because the roof is a representation of your whole . 

You can also read more about roofing materials on The Spruce

Roofing should be a most important improvement choice. Opting for quality ensures a long lasting roof, which will protect your house against weather. There is a strict relation between quality and cost of roofing materials in Saskatchewan. We are transparent and one of the best roofing contractors Saskatoon you can find, and working together with our customers to decide over the best materials at the higher standards.



Custom Roofing in Saskatoon

Custom roofing Saskatoon
custom roofing Saskatoon

Custom roofing has been our speciality since 27 years ago, having been requested to complete quite unusual projects. People demand a very personalized look for their roof, because they understand its importance . Usually, most requests are strictly related to aspect, from texture, shape, colour to material and detail.
At Montbrun Roofing, we have the answer for all your needs. We understand the issues you are faced with every winter, and it is important for you to learn them.

You want your roof as pretty as your house

Beauty starts from the inside, as with everything else. So before you think about the design and the color, you should advice which are the best material choices to protect your roof during the harsh winter.

Whether you want a custom roofing for a specific design and look you want to achieve, you must have a proper understanding of the most common issues we face every winter:

Icicles: while not only damaging your roof, icicles can kill people. You want a safe home, you want your pet and your children protected against unwanted hazards, especially around home. Keeping your gutters clean will prevent icicles from forming. If you are building your home and consider having a custom roof shape – you must consider how it will impact your comfort during the winter.

Your attic is valuable

Two other major problems you have to consider are condensation and insulation . Those are caused mainly by fluctuations in temperature. Ice dams are very dangerous causing structural damage. Condensation causes mold which is not only damaging the structure, but is very unhealthy, causing even death. Ice dams are usually caused by improper insulation, poor ventilation and generally changes in temperature.

However, those issues can be avoided by having your house inspected. A professional can properly identify the problem and find the solution. How? By removing snow, amd by improving the insulation and ventilation. With the first signs of mold, ice dams or icicles, you must understand there is an underlying issue. This must be resolved before they cause greater damage.

Custom roofing is not all about aspect, but about solving those small issues so you can be sure your home is well protected.

Removing snow in the winter is a very dangerous practice, and we recommend having a professional in roof cleaning do it instead.

All roof types face those winter challenges, no matter which roof style you have. Whether you have a hip roof or a bonnet style, mansard or shed, if you decide over a specific colour you must also consider it might fade over time .

During our roofing inspection, we will observe if there are any missing or sloppy tiles or shingles. We will check your vents and gutters. We will inspect your skylights to ensure they are in good condition, and the attic space, which is very important because it shows whether any sun light passes through and if so then means your roof is perforated.

Once we have checked the condition of your roof, we can proceed with how to improve the aspect so you can enjoy a quality roof, personalized and safe for your family. Montbrun roofing specializes in custom roofing in Saskatoon

Roofing materials Saskatchewan

Montbrun roofing uses the best roofing materials in Saskatoon

There are various roofing materials Saskatchewan, used depending on the height of the building, the shape and location. Most commonly used types of materials are cedar shingles, rubber , plastic, clay and concrete, and asphalt . In Canada, the best to use are metal, asphalt and steel shingles.

Let’s write a few words about each .

Cheapest roofing materials: Asphalt shingles

roofing materials Saskatchewan-asphalt shingles

Asphalt shingles are the cheapest roofing materials Saskatchewan, and can be found in 3 different versions. They most common type of roofing material in Canada, being available in a variety of colours and can be customized to create sculpted looks.

Clay and concrete shingles

clay shingles
Clay shingles

Those materials are not recommended in Canada, where the winter is long and humidity level is high. Clay and concrete shingles are best used in dry climates, where the weather is warm most of the year.

Popular roofing materials Saskatchewan: Metal shingles

Although they are quite popular in Canada, especially in Saskatchewan region, metal roof tiles only last around 50 years. They can be now customized in  various shapes and colours, can be interlocking to create new designs .

During your estimate we will talk about the importance of choosing the right building materials, which will not only affect how well your roof will withstand against the storms, but also how soon you will have to repair it.

Roofing materials Saskatchewan: Wood shingles

Wooden houses with wooden shingles. Yes, here in Canada we love the wood. It brings the warmth and comfort and the feeling of comfort. Wood shingles come in various types, and there are also another variant of roofing materials made of wood which are called shakes.


One of the oldest and most durable building material, slate lasts over 100 years and is been one of the first types of roofing ever since. Being an outdated roofing system, not many contractors would accept to work with slates nowadays