Envision, you’re standing on the pavement, looking at the average house. You see the windows the siding, the front door, and way way up above, you see the roof. Does the roof have asphalt shingles? Wood shakes perhaps? Perhaps it is made from rubber or metal tiles? It is what you do not see that really matters, although what you see is where the focus goes. Than meets the eye there’s more to roofing. So let us talk in what goes on, under the shingles. arvada roofing
The Roof Deck
We learn to crawl before we walk, when speaking about roofing let’s start with one that is square, the surface area of your roof which is made from wood. It is installed on top of the basic house framework to give a surface area where to install Shingles. With no roof deck installed in your house, there would be nowhere to install your Shingles. And of course minus the shingles, your roof deck would rot away due to exposure to sunlight, rain, snow and ice and etc…not a cozy dwelling at all!
On Newer Houses, sheets of plywood or OSB boards are fastened in your loft to form the roof deck on top of wooden trusses. Plywood or OSB boards are installed in a staggered formation with little spaces between them to enable wood to expand and contract as the wood warm in the summertime and cools in the wintertime. Older houses frequently have spans of 2″ x 6″ installed instead of plywood or OSB board. Remember to have your Calgary Roofing Contractor replace all damaged wood when the time comes for you to replace your Roof System.
Remember, if your roof deck is rotting or damaged by any means, people walking on your roof could potentially crack or break through the wood, causing further damage to the roof system, for example to the shingles…and to the person who walked on it! Nonetheless, most roof decks can withstand a little bit of exposure to ice or water before it must be replaced.
Metal: Drip Edge and Rake Edge
Drip border and Rake edge is the first part of the Roof System to be installed. It is a narrow and long piece of metal which is installed along each end of your Roof Deck, ie and along the gable ends.
Some area installing other building codes and Rake Edge and Drip Edge is required by local building codes tend not to. Seek advice from your local city building offices to learn. In Alberta for example, the Building Code will not necessitate the installation of Drip border or Rake edge. So low budget roof systems and/or many new residences do not have drip edge installed to be able to allow for roof costs that are more affordable. We recommend however that Rake and Drip border border be installed on every Roof System, no exceptions.
Drip and Rake border can be custom built for the needs of your roof system and can be found in a variety of different colors and sizes. Installing a suitable drip edge often saves hundreds and sometimes even thousands of dollars when your roof system needs replaced.
If your Roof System does not now have drip or rake border installed, usually do not panic, you will endure well enough. Simply be aware that when your roof must be replaced Deck on an as needed basis.
Arguably the most important part of every whole roof system. The metal installed in skylights, chimneys and the valleys take the brunt of water flow on every roof. Badly installed, a waterfall can be made by a fresh roof system out of your living room.
Every rear pan needs a little 2″ segment of metal sticking out 1″ or more from either side of the chimney or skylight to redirect water away from your corners. Water should reach the metal rear pan and be directed away on either side where it can continue its run into the eaves trough.
In the same way water runs along the valleys between two mountains, water runs along the valleys in your roof peaks. Valleys generally receive the highest concentration of water flowing through them, consequently installing them correctly is important!
Valleys have leak barriers installed underneath them as mentioned in the Flow Obstacle section. We recommend installing one constantly in every valley, though some Building Codes don’t demand such a leak barrier to be installed.
A word of warning: Many roofing contractors install valleys in a style referred to as ‘closed’. A valley that is shut consists of Shingles woven inside the valley, as opposed to an ‘open’ valley which has sheet metal. Both the ‘open’ and the ‘closed’ style of installation are okay by the most Building Codes and by most producers, nevertheless, the ‘open’ style setup has consistently out performed the ‘shut’ style…and prices just precisely the same cost to install. Ask your Roofing Contractor to use the ‘open’ style of installment for your roofs valleys, this could save from having to replace your roof system and also can prevent concerns in the long run. This metal can be purchased in any color to match the shingles on your own roof system.
Think of a leak impediment as a “second layer” of protection for your Roof Deck. A backup plan, if you’ll, and also a protection against moisture build up. Leak obstacles are nearly always installed due to the danger these places pose ice build up on top of the Drip Edge and Rake Edge metal along eaves trough places, gable places and valleys, shingle deterioration and water flow that was back.
You’ll discover how snow and ice builds up along the length of your eaves troughs and inside the roof valleys, if you have ever looked at your roof during winter. Much like Rake Edge and Drip Edge, some Building codes require Leak Barriers to be installed and some Building Codes usually do not. In Alberta, the Building Code requires a leak Barrier to be installed on valley areas of a Roof Systems and all eaves trough due to problems related to such snow and ice build up.
Virtually all roofs in Calgary, Alberta have leak barriers installed, and many different kinds of leak impediments are offered in today’s market, each produced by many different manufacturers and offering another degree of dependability, functionality and warrantee.
Selecting a suitable Leak Obstacle and installing it properly is an important step in every Roof System. Speak with your Roofing Contractor to find out more about leak obstacles, how to select the right one and how exactly to select it to be installed by a Professional Roofing Contractor.
Roof Deck Protection is much the same to a Leak Barrier.
Normally, Roof Deck Protection is a step lower in quality when compared to a Escape Impediment. As with Leak Barriers yet, there are many different kinds of Roof Deck Protection accessible to choose from ranging from basic felt /tar paper to complex plastic woven sheets of wrinkle and rip proof fabric. Selecting a solid Roof Deck Protection is an essential part of an excellent Roof System.
Paper was felt by a word of caution; most roofing businesses use . Some problems can appear if the felt paper becomes wet during or after the installation, although using believed paper is a standard and acceptable practice. Ever notice how paper has a tendency to curl when it dries after it was wet? In a similar way, felt paper can curl if water or excessive wetness reaches it. Because the cost is rather modest, and for this reason, we recommend installing a higher quality Roof Deck Protection for example a GAF/ELK Deck Armour. With a Roof Deck Protection that was considerably more trusted, you will be rewarded for a comparatively small added price.
Request your local trusted Roofing Contractor about which under-layer would be best for your Roof System any why.
So there it is, life beneath the shingles. See how much goes on behind the scenes? Professional roofing contractors can help immensely in ensuring a roof system is reliable for a long time and understand this stuff in and out. Product providers for example GAF/ Elk and IKO can help answer particular questions about products too.
All the best with your roofing job, and remember, be proactive, make educated choices.