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Question DetailsAsked on 2/10/2017

Quality of Landmark architechural shingle

#15 felt underlayment, 57 SQ.

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2 Answers


Put the word Landmark into the Ask box above, and it will pop up several previous questions about shingle brands which include opinions by answerers about Landmark shingles - there may be more links below those answers to other questions about shingle brands.

Landmark is one of the good old old standbys - comes in three weights. My recommendation - use the intermediate weight as a minimum anywhere, heavy weight in potential high wind or hail areas (though if in frequent extreme wind or hail areas I would recommend the GAF hail-resistant shingles). The lightest weight shingles are just too prone to peelback in wind - they are used a lot in our area, and when it blows 40-60 mph it sounds like a bunch of tarps flapping in the wind with all the shingle tabs peeling back (and some a eventually breaking). Of course, if in high wind area, I don't recommend counting on the factory tabbing anyway - the shingles (at least on the windy side, if it comes from one consistent direction) should be retabbed with asphaltic adhesive during installation (usually right after the shingles are all on) anyway.

[Tabbing is adhering the "tab" or protruding flap on the shingle to the underlying one with asphaltic adhesive which comes in caulk gun tubes. From the factory the shingles come with asphaltic adhesive stripes on the undersides of the tabs, but they then put cellophane over that to keep them from sticking to and asphalt staining the shingles while in the bundle - largely defeating the purpose of the tabbing stripes. The theory is the tar melts out from under the cellophane (or through little perforations in it with some brands) when it heats up in the summer and then sticks to the underlying shingle. Obviously does not work till the roof gets hot in the summer, so be sure that any windstorms are scheduled for only the mid-summer after reroofing or later - and in many cases the resulting bonding is minimal at best (especially in dusty areas where the strips can get dust-covered before they melt and adhere), and it is not uncommon to be able to easily lift up each tab on a roof even after it has been through a summer. This leaves the tabs free to lift in the wind, eventually cracking through the shingles as they lift and flap up and down, and eventually as the shingle gets fatigued by the flapping the tabs break over backwards and snap off - eliminating 1/2 the protective cover on the roof at that point and reducing the rain blow-under protection to near nothing.]

Note in some areas there is a minimum allowed shingle weight - commonly aroudn 230#/square - so in many cases that technically eliminates the lightest weight in a product line anyway, though if in an area where roofing is not inspected (as is the case in most areas) you still see a lot of the underweight shingles going on. Some insurance companies also have minimum ratings for shingles in certain areas.

If in a rated tornado/hurricane area where approved shingles have to be used (or should be) be aware that all shingles of a given line do not necessarily meet those standards. For instance CertainTeed (who makes Landmark) specifically states on their product sheet that only certain manufacturing plants produce products with the high-wind or hurricane (Florida or Miami-Dade or Texas etc) certifications - so if the certification is not printed on the package then don't assume it meets the standard, adn specify in your roofing contract that the shingles shall be certified to AND be manufacturer labelled as meeting whatever standard may be required in your area. Those requirements are usually on a note or data sheet on the building department/building inspection agency website.

Answered 3 years ago by LCD



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Answered 3 years ago by Member Services

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