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Old 04-04-2016, 05:50 PM   #295
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I used Dicor also.


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Old 04-04-2016, 06:26 PM   #296
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Quote:
Originally Posted by dznf0g View Post
I use Dicor for this type of install. It was very easy to remove after 2 years, as I had a warranty issue with Maxim (which they handled very well, BTW).


A very good point.

Not knowing any better, several years ago when I bought my Maxxims, I used the AS recommended general caulking product (Sikkafex) when I installed the Maxxims.

Big mistake - read on!

Seems to me at that time, I asked Maxxim, and they had no particular recommendation as to what I should use - maybe now they do! That was why I just went ahead with what I had on hand!

Anyway, after a couple of years, one of my skylights developed condensation between the polycarbonate layers and I could actually see that the black sealing material at the edge between the layers had bulged out of place (inward).

I also found Maxxim very good about this - they agreed to replace the complete assembly without question.

On a trip with our trailer through Dallas I picked up the new unit to take home to Canada. They were able to examine my old one on the trailer, and confirmed the internal condensation.

When i got home, I pulled all the securing screws to replace the old unit but found it impossible to get it off even using prybars levering on wood over to spread the load over roof rivet lines! I felt that if I pushed any harder I would damage the roof!

I decided to give it up and think about it some more!

To my surprise, over the summer, the condensation evaporated without leaving a trace and after several seasons has not returned!!

I did add lots of extra caulk to try to keep water away from the three piece polycarbonate sandwich.

So ..... I still have the brand new unit waiting to be installed if /when the condensation problem returns!

I did explain to Maxxim what had happened, as they had asked me if I would return the old unit for examination if I could and said they would pay the shipping.


After looking at the design detail of the Maxxim, I think that at this stage, if I ever do need to remove the old unit the only way I will be able to do it will be to cut off the old unit piece by piece with a dremel - possibly leaving the flat aluminum surface from the old frame that is securely caulked to the curb in place and dropping the new unit over it!

Not a job I relish, so my fingers are crossed hoping that the condensation does not return!


Be warned! ................ Brian.
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Old 04-06-2016, 12:44 PM   #297
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Quote:
Originally Posted by dznf0g View Post
I use Dicor for this type of install. It was very easy to remove after 2 years, as I had a warranty issue with Maxim (which they handled very well, BTW).
Thanks. Never heard of Dicor before. Is the the product you used?: http://dicorproducts.com/catalog/roo...-lap-sealants/

If so which type, self leveling, HAPS free, or non-sag?
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Old 04-06-2016, 12:48 PM   #298
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Originally Posted by 66Overlander View Post
Thanks. Never heard of Dicor before. Is the the product you used?: http://dicorproducts.com/catalog/roo...-lap-sealants/

If so which type, self leveling or for vertical surfaces?: http://dicorproducts.com/catalog/roo...-lap-sealants/
Yes, self leveling.
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Old 04-06-2016, 04:00 PM   #299
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I have a 2005 model which I believe is older than what your AS is. I ordered two skylights from Maxim in February and completed installing them in March (it was warmer then). I called Maxim with my measurements and ended up with their standard 17.25" x 25.25" and 22.25" x 22.25" skylights which fit fine. Good luck.
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Old 04-06-2016, 04:05 PM   #300
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Seems no one is willing to provide their curb dimensions or the sizes they ordered from Maxim. Diasppointing. I do not trust that were I to drive to my trailer and try to measure the curbs through the distortion of the original lenses that I would get any better numbers than going with the information others have already found to work. Removing the original skylights to get a precise measurement is not an option. Guess I will just order them on the large side and shim any gaps.
My post above was in reply to 66Overlander. I'm still trying to figure this posting thing out, so please bear with me.
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Old 04-07-2016, 08:22 AM   #301
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Quote:
Originally Posted by WGreg View Post
I have a 2005 model which I believe is older than what your AS is. I ordered two skylights from Maxim in February and completed installing them in March (it was warmer then). I called Maxim with my measurements and ended up with their standard 17.25" x 25.25" and 22.25" x 22.25" skylights which fit fine. Good luck.
Thank you! Those are the dimensions I am planning to order.
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Old 05-02-2016, 02:07 PM   #302
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Well, glad I haven't ordered our Maxim skylights yet. Made a trip to measure the skylight curbs on our 2016 Classic over the weekend and found the approximate dimensions of the outsides of the curbs to be significantly larger than expected and larger than the skylight dimensions I had expected to order:

Front Skylight:
22.5" x 22.5" *

Rear Skylight:
26.0" x 17.5" *

* In both cases the curbs might actually be 1/16" larger in each dimension. It was hard to make precise measurements through the existing skylight and double sided tape that was used on the top of the curbs to attach the skylights to the trailer.

It sort of scares me how much larger these skylight curb dimensions are than anyone else has reported here, but I tripled checked the measurements, so I believe them to be correct. Airstream must have made quite a dimension change in recent years.

I will call David at Maxim with these dimensions and see what he recommends. I might expect order the new Maxim skylights at 1/8" to 1/4" larger than the above curb dimensions.
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Old 05-03-2016, 03:11 AM   #303
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He will say, take the old ones off and exactly measure what you have on the roof. Based on the non-square construction of the frame, I would make the unit about 1/16' larger as we had a corner that was not truly vertical as compared the relatively square top edge of the frame.
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Old 05-06-2016, 02:10 PM   #304
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Thanks for the 1/16" suggestion. Is that about what everyone else has done? I was thinking 1/16" or 1/8". Thanks in advance for any other feedback.

P.S. I went back to the trailer again and re-measured the curbs from the top and sides. They are definitely 22.5" x 22.5" and 26.0" x 17.5".
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Old 05-10-2016, 07:11 AM   #305
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this is in response to question about double sided tape for removal of skylights if needed..

so my question would be about using butyl tape under skylight frame or on top of installed curb on roof.

its the perfect width, you roll the butyl tape out on the existing skylight curb, set the skylight on top, press down and install SS screws with gaskets on sides and done. if you use proper length screw it goes into the roof curb not creating a leak spot. am i missing something with all the caulking, etc mentioned.

maybe put a strip of tape on front facing(leading edge) side of curb, push the assembly back to make sure leading edge of skylight is better sealed?




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David does not recommend tape.
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Old 05-10-2016, 08:47 AM   #306
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Sealant.

I finally got my new Maxim skylights ordered for my 2016 Classic a couple of weeks ago. I ordered a 18" X 26.5" and a 23" X 23". I asked about sealants and was told that they liked the "OSI" brand. So that is what I am going to use when I install mine.
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Old 05-10-2016, 09:25 AM   #307
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Quote:
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He will say, take the old ones off and exactly measure what you have on the roof. Based on the non-square construction of the frame, I would make the unit about 1/16' larger as we had a corner that was not truly vertical as compared the relatively square top edge of the frame.
No doubt that is teh best way but not too practical in the sense that the old skylight flange may well come off in many pieces, so once off, you'd have to close the opening with some sort of plywood panel or something unti you got your new skylight.

I did contemplate doing just that because I found that I could not really measure the curb accurately with the old skylight in place.

I did measure close enough to know that mine were similar in dimensions to those others had been ordering, and Maxim assured me that they knew what I needed.

Despite their assurance, because we live many miles from Dallas, I didn't want to risk finding that perhaps my curbs were slightly out of square ore maybe sloped so that the new skylight wouldn't fit.

And if it doesn't fit, it would not be an easy fix!

Looking at the design and the way the skylight is secured and seals I couldn't see any downside to ordering one to be made a little on the large side.

So I decided to add 1/4" to the suggested dimensions for the skylights I bought - worked out fine but still a pretty close fit to drop them on over the curb.

I'll never know if they would still have fitted if I went with their standard dimensions - it sure would have been close though!

Brian.
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Old 05-10-2016, 09:32 AM   #308
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Quote:
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I finally got my new Maxim skylights ordered for my 2016 Classic a couple of weeks ago. I ordered a 18" X 26.5" and a 23" X 23". I asked about sealants and was told that they liked the "OSI" brand. So that is what I am going to use when I install mine.
I was going to write you back when I finally got my order in. I am assuming your curbs were the same size as mine and you went a full half inch larger in each dimension. Is this correct?
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