Ha wkinson Kia

An Overview of Corrosion Protection Products: Part 2 of 2

This is the continuation of Corrosion applied. Seam sealer tape can be Protection: Part 1, printed in the Auremoved and repositioned until it is gust issue of Autobody News. firmly pressed into place with a roll

Two-part seam sealers (Fig. 13) are used just like the single component. They have a faster drying time than single-part sealers, but cost more. Control flow sealers are used in areas where a flowable self-levelthey would not warranty the repair. They said he did not follow OEM procedures, which stated a coat of epoxy primer was needed to be applied prior to the application of the seam sealer. I just want you to be warned before you apply this seam er (See Fig. 15) which sets the adhesive. California Autobody Association with David McClune

Fig. 14

Fig. 12 DTM sealers (Fig. 14) have the Fig. 17

Single part seam sealers (Fig. same characteristics as the generally used seam sealers, but has corrosion Year in Quotes Sound deadener (Fig. 17) is a two-part material used for noise, vi12) are an NVH control material. Its primary purpose is to keep out moisinhibtors added so it can be applied to bare metal. with John Yoswick Fig. 16 bration and harshness. It can be used to fill large gaps, but I teach using ture, wind and sound, and it is used No OEMs recognize the use of Make sure you clean the primed it as an adhesive between the outer on all joined metals. It dries by atthese seam sealers. They all state surface with a good wax and grease door skin and intrusion beam. tracting moisture and will take longer there needs to be a barrier coat beremover such as Acrysol (Fig. 16). Work time is about an hour and to dry than two-part adhesives, gentween the bare metal and the seam Using your thumb to put the tape in it is a non-expanding material that erally speaking. sealer , perferably 2K epoxy primer. place and not cleaning the surface works well on horizontal as well as

Every OEM for which I have A friend of mine used a compacorrosion data requires a primer to ny’s DTM seam sealer with no primbe applied prior to the application of seam sealer. er on a new roof panel. The vehicle returned with all of the seam sealer Collision Repair Association of CA. Hawkinson Kia with lifting off the panel. He contacted the manufacturer of the product and Richard Steffen

sealer to bare metal. Transition Planning with John Yoswick

will lead to an adhesive failure. ing type seam sealer is required, as it flows up to 2 in., then cures, preThe next type of seam sealer is Shop Showcase Fig. 15 venting further flow. Self-leveling sealers are recommended for roof in the form of tape (Fig. 15). Common locations of use are the hood with Karyn Hendricks seam sealing and on drip rails and hem, door hem, deck lid hem and trunk opening seams. A fast drying, quarter panel arches. There is no dry non-sag, high build sealer is used for time so you can paint immediately. all other areas that need seam sealer. Do not stretch the tape as it is 34 Shop Showcase SEPTEMBER 2020 AUTOBODY NEWS / autobodynews.com

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