|Shingles: General Roofing Systems Canada|
Shingles for High Winds, Hail, Ice Damming, Rain Storms
Shingles, High Wind Shingles, Wind Resistant Shingles, Shingle Installation, Impact Resistant Shingles, Laminate Shingles, IKO Amourshake Shingles, GAF Timberline Shingles, Certainteed Presidential TL Shingles, Malarkey Legacy Shingles, GAF Grand Canyon Shingles
Below is a shingle installation and purchasing guide for storm nailing shingles, high wind rated shingles, impact resistant shingles, roofing underlayments and installations for shingle blow-offs, shingle installation placement for storm planning, and caulking shingles (tabbing) for high wind shingle applications.
General Roofing Systems Canada is an Expert Shingle Roof Installation Contractor Serving Shingle Roofing Through-out Western Canada. We install shingles in Calgary, Red Deer, Edmonton, Lloydminster, Saskatoon, Regina, Medicine Hat, Lethbridge, Canmore, Kelowna, Vancouver, Whistler, and points between.
High wind shingle roofing is different than normal shingle installations. Most shingle installers do not plan for high winds as most roofing installations are just fine with-out specific planning. GRS installs every roof assuming high winds and rain storms (including ice, snow, water issues, ice damming, etc).
The Best Roofing Underlayment for Storm Shingling
The first consideration is the roof underlayment you use and how you install the roof underlayment.
Our roofing blog has extensive information available. Type in roof underlayment in the search box in the right hand column for more information or click on our most recent posting here:
In summary, roofing underlayment must wrap the complete roof deck. Roofing underlyment must run up all verticals and wrap all roof penetrations. Roof ice and water peel and stick membrane must be installed at the eave edge and in valleys and around roof openings. Tar paper does not withstand a storm and synthetice roof underlayment should be used for the complete roof deck field area.
The Best Roof Shingles for High Winds, Hail, Ice Damming, and Rain Storms
The IKO Arnourshake is a fantastic shingle for high wind areas. Armourshake is heavy and it has an out of the box wind warranty of up to 177 km and IKO offers an extended warranty option for the Armourshake of up to 210 km winds (the new 2011 IKO Royal Estate Shingle also offers the same wind warranty http://www.iko.com/shared/residential/brochure/MR9L024_IKO_Brochure_RoyalEstate_UNI.pdf ). The IKO Armourshake is so strong it has a UL 2218 Class 4 Impact Rating! (The IKO Crowne Slate SBS Modified Shingle also has the same impact rating). The Armourshake shingle looks great, our roof installers say it installs well and they have a lot of confidence in this shingle, and as a bonus the IKO Armourshake really does have great street appeal. The only complaint come clients have had with the Armourshake is the pattern of roof when installed isn't as radom as some like and then others like a more uniform pattern. All in all we recommend the Armourshake Shingle and it comes with the Limited Lifetime Warranty the shingle manufacturers are now offering. The IKO Armoushake brochure is available here:
Another great shingle made for high winds etc are the Malarkey Legacy Shingles.
The Malarkey Legacy has a wind warranty almost identical to the IKO Armourshake and it has a Class 4 Impact Rating also. The main difference with IKO and Malarkey is that IKO maintains a 15 year "no grief" type warranty and Malarkey 10 years. All the limited lifetime shingle warranties shingle manufacturers are offering are complicated and limited. From our perspective, the more unconditional complete replacement front end warranties are most important. Malarkey calls theirs the "10 Year Right Start Warranty" for example.
The Certainteed Presidential TL
and the GAF Grand Canyon
are both great products also.
When considering the best roofing shingles in general, the Certainteed Grand Manor, Landmark 50 and Landmark TL, and GAF Timberline Ultra are also very respectable shingles, perform well, and the roof shingle installers like them.
The Best Caulking for Shingle Installations
Karnak (http://www.karnakcorp.com/19.aspx) is by far one of the better caulking materials roofers can use. It is rubber reinforced asphalt and doesn't break down like typically black jack roofing tar caulking.
For high wind application, tabbing is required under each shingle. Three to four dabs of caulking to the underside of each shingle will assist with high wind shingle lift tolerance.
Caulking the valley flashing metal prior to installing the shingles in to the valley (vertically caulk a complete - consistent bead of caulk from top to bottom of each side about 2" in from the chalked line).
Caulk the underside of roof penetrations such as the roof vents, goosnecks, etc. Caulking the chimney back pan and skylight back pan prior to the shingles being installed will help storm planning, especially ice and water back up and leaks.
The first row of starters helps for high wind shingle installations, especially if you caulk under the starters and even over the starters.
Caulking the underside of all shingle capping will assist with high wind installations also.
Storm Nailing Shingles (Shingle Fastener Installation for High Winds)
GRS storm nails every roof and follows almost every precaution on every roof for shingle installation high wind planning as discussed on this blog posting.
Nailing is critical. Six nails per shingle instead of four nails. The nails must be as low as possible and must be in the double laminate strip or on the shingle nailing line (depending on the shingle technology). A nail that does not hit the double laminate portion (if there is a double laminate part of the shingle) is a nail that has no value. We have our shingle installers storm nail for peace of mind. We don't make profit returning to fix our shingle installations.
Also, the nails (or fasteners) on the outside, so the first and the sixth nail fastened, must be within one inch of the end of the shingle. We are critically OCD when inspecting our shingle roof installation after each install for this point. The nails on either end are critical.
The shingle nails or fasteners must lay flat and must be driven right in and be flush with the shingle. A fastener that isn't straight is a deficiency and isn't going to help in high winds, the nail head will also eventually break through the next shingle installed which obviously is no good. The GRS Installation Specification calls for the removal of every nail from the roof deck prior to installing the new roof shingles because simply hammering down the old nails prior to the installation of the new shingles just gives the new roof nail fasteners a reason not to go in straight. Not to mention the fact that any nails simply hammered down can work there way up during install and can cause all manner of issue with roof water tightness.
High Winds and the Laminate Sealing Strip on Shingles
Do not install shingles in cold weather if there is any opportunity for high winds in the area before the weather is warm enough and the sun is strong enough to activate the sealing strip on laminate shingles. The sealing strip on laminate shingles is definitely a life saving when it comes to high winds and whether your shingles blow off.
The Placement of Shingles for High Winds
The GRS Specifications for Installation of Shingles for high winds (which is every roof for us) calls for the laminate shingles with a double laminate strip to be lowered 1/16 to 1/8 of an inch. No shingle manufacturer we know of mandates this and many shingle installation pros will argue its merit, but we see it as simple wind dynamic engineering at work (likely one of many reasons we are installing on engineer, architect, designer personal residences all the time). Anyway, back on point, installing shingles lower causes more shingle material to be installed and it is a little more costly as a result, but it increases the shingle wind resistance. Try it and you will see. Essentially, the premise is that more of the shingle below is covered (less exposure = less opportunity for shingle wind lift) - wind lift resistance for the shingles is important. But more than that, the double laminate strip, when you lift laminate shingles, almost acts as a natural "break point" for the shingles to snap in high wind. Try it - install your laminate shingles as normal and before the shingles seal in the heat, slowly lift the shingle until it snaps, it will always snap at the double laminate strip. Lowering your shingle rows 1/8 of an inch at point of installation, gets the laminate shingle above to hold down the shingle below before the break point at the double laminate. You'll have to try it to understand likely. Anyway, this practice has lowered our shingle blow off issues at least by 10 to 1 and so we install our shingles this way on every roof.
For more information about our re roofing specifications and manner of re roof installations simply type in re roofing in the search bar to the right column of our blog and any links will come up that apply to re roofing. Also, any other website links we have linked to in our blog articles will appear for your research.
To Request a Re Roof Quotation click here:
For information about our Re Roofing Specs visit the Pitched Roofing section of our website:
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If you have questions about high wind shingle installation, if you need emergency roof repairs, or just have a simple question call us 24 / 7 on our toll free line +1.877.497.3528.
Until Next Time,
The Team at GRS
+1.877.497.3528 | firstname.lastname@example.org | http://www.grscanadainc.com/
General Roofing Systems Canada is a Comprehensive Building Envelope and Roofing Contractor serving Western Canada. Calgary, Red Deer, Edmonton, Lloydminster, Saskatoon, Regina, Medicine Hat, Lethbridge, Canmore, Kelowna, Vancouver, Whistler, and points between.
240 - 70 Shawville Blvd. SE
Calgary, Alberta Canada
+1.877.497.3528 Toll Free
3428 99 Street NW
Edmonton, Alberta Canada
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Vancouver, British Columbia
1489 Marine Drive
West Vancouver, BC Canada
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Blog post topics; Shingles, High Wind Shingles, Wind Resistant Shingles, Shingle Installation, Impact Resistant Shingles, Laminate Shingles, IKO Amourshake Shingles, GAF Timberline Shingles, Certainteed Presidential TL Shingles, Malarkey Legacy Shingles, GAF Grand Canyon Shingles