12 June 2017
Racking is the process of installing shingles right at the roof and it does not require any installation via the conventional stair-step technique.
Is racking a GA-approved installation technique?
Typically the tab shingles installed in trios are approved; however, this installation technique isn’t too popular of an option due to the presence of many issues and damages associated to it especially when precautionary actions aren’t taken.
For the rest of shingles installation, be it the laminated versions or high-end ones, approval from GA hasn’t been obtained. In order to obtain the most proper appearance and to prevent damages like an excess of bending from occurring to these heavyweight shingles during the process of installation, proper installation must be adhered to and any possible offsets available in the given instruction must be given attention all the time.
Damages and obstacles related to installation that can possibly occur
Careless nailing may occur in situations where shingles are cracked because all shingles are not appropriately nailed at the end part to make room for inserting the next shingle. If shingles are not nailed properly during their initial installation the handyman might forget to do it after the next shingle has already been installed. If there are not enough nails to pin down the shingles neatly and firmly, the level of wind resistance at the roof can be compromised.
Cracks caused by pressure may occur if shingles are forced to bend during the process of inserting the blind nail or the last nail at the end of every shingle. The cracks are often invisible in the beginning; however, eventually it may lead to early damages of the shingles.
Wrong blend of color may likely occur if the installation of the shingles is done directly on the roof; as a result lines of up-and-down color may appear on the roof. This scenario is also known as shading.
Things you should do when racking the tab shingles in trio
Make sure that appropriate nailing and enough nails are used to pin down all the shingles. Nailing too high or omitting some nails may result in less attractive patterns and the resistance of the shingles towards the wind can be impaired.
Always watch the blend of color so that no racking lines are visible. When installing the shingles, racking is best done using shingles with single columns and not duos and don’t forget to add in shingles from two or three different bundles in order to reduce the possibility of ending up with less attractive color patterns.
Be careful not to bend the shingles in excess when the last nail is about to be inserted into the end of the shingles so that no damages can ever occur to the shingles as these damages might not show instantly but they can cause early signs of failure. The colder the surrounding temperature is, the higher the possibilities for shingles to become overly bent when the last nail is inserted.
Will I be disqualified from protected under the warranty?
Fortunately, it’s unlikely for you to be disqualified. The warranty issued under GAF protects users from manufacturing defects regardless of whether you’re installing the shingles via the regular stair-step technique or racking.