Gmc roof
- Thread starter Calvin228
- Start date
Park under cover.
Sully
Bellevue wa.
On Mon, Feb 3, 2020 at 3:45 PM Calvin via Gmclist
wrote:
> im looking for a roofing caulk to cover the front and back section of my
> eleganza 2, i tried this 3m 5200, but it crack on the back end and i was
> able
> to pull it out with my bare hands
>
> anyone hero know a good method to seal the roof to prevent leaks.
>
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Sully
Bellevue wa.
On Mon, Feb 3, 2020 at 3:45 PM Calvin via Gmclist
wrote:
> im looking for a roofing caulk to cover the front and back section of my
> eleganza 2, i tried this 3m 5200, but it crack on the back end and i was
> able
> to pull it out with my bare hands
>
> anyone hero know a good method to seal the roof to prevent leaks.
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
All kidding aside,
If the 5200 failed then you likely applied it to an improperly prepared
surface or outside of its ideal temperature or substrate parameters. There
are a few things that need to be paid attention to for any sealant whether
single component or dual component in order for them to work properly.
Not necessarily in order of importance as they all are equally.
Cleanliness of joint to be sealed.
Temperature of sealant product, joint to be sealed as well as ambient air.
Material makeup of joint (suitable substrate) for chosen sealant.
Environmental characteristics of where the joint will live ( uv exposure/
submerged in fluids etc)
Rate of movement or flex in joint, thermal, mechanical, vibratory etc.
All these as well as other conditions or product limitations should be
known prior to utilizing any adhesive or sealant product and if not listed
on the container or with accompanying paperwork, a phone call to the tech
service number with questions is in order.
That all said, are you planning on painting over the sealed joint? This
will narrow your selection.
I see that 5200 is approved for use below the water line which should
indicate that it is truly water proof. The brag specs also state that
appropriate substrates are wood, fiberglass, and gelcoat. Your roof is not
listed in the approved substrate list as it is painted and aluminum.
Another consideration is the types of applicators you have in your
possession. Most of not all two part adhesive sealants will require a
proprietary application system or “gun”. If you are not prepared for the
expense of purchasing the correct applicator this will again narrow your
product selection.
If you are now squeezing your temples with squinted eyes, it’s ok. Go to 3m
website and look up the spec for 08632. It is a single component,
paintable, moisture cured adhesive sealant which can be applied over damn
near anything stable. It is available in at least three colors as well as
cartridges to fit “soft” package dispensers or traditional caulk type guns.
I emptied close to a dozen soft tube cartridges for various internal and
external sealing and bonding duties on my 77. We use this same product for
adhering outer door panels or door skins to the door intrusion beam when
replacing the skins. I do not know of one failure.
Hope this helps.
Sully
Bellevue wa
> Park under cover.
>
> Sully
> Bellevue wa.
>
> On Mon, Feb 3, 2020 at 3:45 PM Calvin via Gmclist
>
>> im looking for a roofing caulk to cover the front and back section of my
>> eleganza 2, i tried this 3m 5200, but it crack on the back end and i was
>> able
>> to pull it out with my bare hands
>>
>> anyone hero know a good method to seal the roof to prevent leaks.
>>
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>
>
If the 5200 failed then you likely applied it to an improperly prepared
surface or outside of its ideal temperature or substrate parameters. There
are a few things that need to be paid attention to for any sealant whether
single component or dual component in order for them to work properly.
Not necessarily in order of importance as they all are equally.
Cleanliness of joint to be sealed.
Temperature of sealant product, joint to be sealed as well as ambient air.
Material makeup of joint (suitable substrate) for chosen sealant.
Environmental characteristics of where the joint will live ( uv exposure/
submerged in fluids etc)
Rate of movement or flex in joint, thermal, mechanical, vibratory etc.
All these as well as other conditions or product limitations should be
known prior to utilizing any adhesive or sealant product and if not listed
on the container or with accompanying paperwork, a phone call to the tech
service number with questions is in order.
That all said, are you planning on painting over the sealed joint? This
will narrow your selection.
I see that 5200 is approved for use below the water line which should
indicate that it is truly water proof. The brag specs also state that
appropriate substrates are wood, fiberglass, and gelcoat. Your roof is not
listed in the approved substrate list as it is painted and aluminum.
Another consideration is the types of applicators you have in your
possession. Most of not all two part adhesive sealants will require a
proprietary application system or “gun”. If you are not prepared for the
expense of purchasing the correct applicator this will again narrow your
product selection.
If you are now squeezing your temples with squinted eyes, it’s ok. Go to 3m
website and look up the spec for 08632. It is a single component,
paintable, moisture cured adhesive sealant which can be applied over damn
near anything stable. It is available in at least three colors as well as
cartridges to fit “soft” package dispensers or traditional caulk type guns.
I emptied close to a dozen soft tube cartridges for various internal and
external sealing and bonding duties on my 77. We use this same product for
adhering outer door panels or door skins to the door intrusion beam when
replacing the skins. I do not know of one failure.
Hope this helps.
Sully
Bellevue wa
> Park under cover.
>
> Sully
> Bellevue wa.
>
> On Mon, Feb 3, 2020 at 3:45 PM Calvin via Gmclist
>
>> im looking for a roofing caulk to cover the front and back section of my
>> eleganza 2, i tried this 3m 5200, but it crack on the back end and i was
>> able
>> to pull it out with my bare hands
>>
>> anyone hero know a good method to seal the roof to prevent leaks.
>>
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>
>
I have used 3M 5200 sealant but then I did more research. I ended using Life Seal after it was recommend by a boating forum. So far two years and
haven't seen any leaks come through.
"A unique combination of marine silicone and polyurethane, formulated especially for fiberglass. LifeSeal offers a fast-curing, low odor, high
adhesion, non-sagging, non-corrosive, non-yellowing formula. It provides a durable permanent water tight seal for joints subject to structural
movement. Use for sealing decks to hulls, thru hull fittings, vinyl ports, sealing/glazing windshields, and bedding marine hardware. Will adhere to
metal, glass, wood, Lexan, ABS, and other materials. Not recommended for ferrous cement hulls, impregnated wood, or oil soaked materials. Cures in
water. Mildew resistant and acid free."
https://www.amazon.com/gp/product/B00144D6MU/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
--
Angel Rodriguez
San Jose, CA
1978 23' Birchhaven
haven't seen any leaks come through.
"A unique combination of marine silicone and polyurethane, formulated especially for fiberglass. LifeSeal offers a fast-curing, low odor, high
adhesion, non-sagging, non-corrosive, non-yellowing formula. It provides a durable permanent water tight seal for joints subject to structural
movement. Use for sealing decks to hulls, thru hull fittings, vinyl ports, sealing/glazing windshields, and bedding marine hardware. Will adhere to
metal, glass, wood, Lexan, ABS, and other materials. Not recommended for ferrous cement hulls, impregnated wood, or oil soaked materials. Cures in
water. Mildew resistant and acid free."
https://www.amazon.com/gp/product/B00144D6MU/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
--
Angel Rodriguez
San Jose, CA
1978 23' Birchhaven
There are a fair number of really good flexible sealants out there. But,
the very best stuff in the world, applied improperly, is a waste of time.
You ABSOLUTELY, POSITIVELY, HAVE to have the surface properly cleaned, and
EVERY LAST TRACE of any product that contains silicone removed. Nothing,
and I mean Nothing, will adhere to a surface where there is the slightest
trace of silicone. 3M makes several good products that will do this. Other
companies as well. But, every last trace of old previously used products
MUST be removed. Do it in a protected area, under the recommended
temperature ranges that the sealant manufacturer recommends, and give
adequate curing times, and you will be happy with the results. No short
cuts here. It is drudgery to be sure. Uncomfortable up on that roof. Been
there, done that. Many times. Pull up your big boy panties, and just commit
the necessary time to the project. No short cuts.
Jim Hupy
Salem, Oregon
On Wed, Feb 5, 2020 at 3:49 PM Angel Rodriguez via Gmclist <
> I have used 3M 5200 sealant but then I did more research. I ended using
> Life Seal after it was recommend by a boating forum. So far two years and
> haven't seen any leaks come through.
>
> "A unique combination of marine silicone and polyurethane, formulated
> especially for fiberglass. LifeSeal offers a fast-curing, low odor, high
> adhesion, non-sagging, non-corrosive, non-yellowing formula. It provides a
> durable permanent water tight seal for joints subject to structural
> movement. Use for sealing decks to hulls, thru hull fittings, vinyl ports,
> sealing/glazing windshields, and bedding marine hardware. Will adhere to
> metal, glass, wood, Lexan, ABS, and other materials. Not recommended for
> ferrous cement hulls, impregnated wood, or oil soaked materials. Cures in
> water. Mildew resistant and acid free."
>
>
> https://www.amazon.com/gp/product/B00144D6MU/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
> --
> Angel Rodriguez
> San Jose, CA
> 1978 23' Birchhaven
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
the very best stuff in the world, applied improperly, is a waste of time.
You ABSOLUTELY, POSITIVELY, HAVE to have the surface properly cleaned, and
EVERY LAST TRACE of any product that contains silicone removed. Nothing,
and I mean Nothing, will adhere to a surface where there is the slightest
trace of silicone. 3M makes several good products that will do this. Other
companies as well. But, every last trace of old previously used products
MUST be removed. Do it in a protected area, under the recommended
temperature ranges that the sealant manufacturer recommends, and give
adequate curing times, and you will be happy with the results. No short
cuts here. It is drudgery to be sure. Uncomfortable up on that roof. Been
there, done that. Many times. Pull up your big boy panties, and just commit
the necessary time to the project. No short cuts.
Jim Hupy
Salem, Oregon
On Wed, Feb 5, 2020 at 3:49 PM Angel Rodriguez via Gmclist <
> I have used 3M 5200 sealant but then I did more research. I ended using
> Life Seal after it was recommend by a boating forum. So far two years and
> haven't seen any leaks come through.
>
> "A unique combination of marine silicone and polyurethane, formulated
> especially for fiberglass. LifeSeal offers a fast-curing, low odor, high
> adhesion, non-sagging, non-corrosive, non-yellowing formula. It provides a
> durable permanent water tight seal for joints subject to structural
> movement. Use for sealing decks to hulls, thru hull fittings, vinyl ports,
> sealing/glazing windshields, and bedding marine hardware. Will adhere to
> metal, glass, wood, Lexan, ABS, and other materials. Not recommended for
> ferrous cement hulls, impregnated wood, or oil soaked materials. Cures in
> water. Mildew resistant and acid free."
>
>
> https://www.amazon.com/gp/product/B00144D6MU/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
> --
> Angel Rodriguez
> San Jose, CA
> 1978 23' Birchhaven
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
