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Post by rocketrod on Sept 25, 2016 13:39:06 GMT 10
Hi I have recently rebuilt my ambassador from the chassis up. Including new aluminium roof, and brand new exterior cladding. I want to reseal my windows, 4 seasons hatch, and door back. Now I have spoken to so many people about the best procedure it seems that everyone has a different opinion. I have pulled all the old windows etc out, they all had the original tape stuck to the rebate around the windows and the door. I am wondering if this would be the way to go, as I have a brand new canvas and want to do it right the first time. some say use the tape combined with Butyl Mastic bead around the tape, others say don't use Mastic use a silicone sealer. We all Have older style vans with log cabin profile cladding etc on this forum, I was wondering what all you guys have used and what would be the best? Thanks in advance |
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Post by Deleted on Sept 25, 2016 16:01:58 GMT 10
Hi I have recently rebuilt my ambassador from the chassis up. Including new aluminium roof, and brand new exterior cladding. I want to reseal my windows, 4 seasons hatch, and door back. Now I have spoken to so many people about the best procedure it seems that everyone has a different opinion. I have pulled all the old windows etc out, they all had the original tape stuck to the rebate around the windows and the door. I am wondering if this would be the way to go, as I have a brand new canvas and want to do it right the first time. some say use the tape combined with Butyl Mastic bead around the tape, others say don't use Mastic use a silicone sealer. We all Have older style vans with log cabin profile cladding etc on this forum, I was wondering what all you guys have used and what would be the best? Thanks in advance You have a new canvas as you say why stuff it up with silycone  at least either the tape or butyl mastic works! and in the future if need be the window can be removed without damage  silycone should not be allowed near any caravan IMHO nor should sikaflex unless you have no intention of keeping the caravan for a while and it is going to be sold quickly  |
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Post by tasmillard on Sept 25, 2016 17:52:01 GMT 10
Lots of info and opinons can be found in the Sealants thread... but I think most come down to:
1) Butyl Mastic - last only 5 - 10 years but can be pulled apart (non-adhesive)
2) Sikaflex - Will seal for many decades but is a strong adhesive so practically impossible to pull things apart with potential breakages
3) NO SILICONE
I have used sikaflex 291 on the Millard and it is water tight! However, I decided to go with butyl mastic on the viscount in case I need to remove items in future even tho the work will need to be redone.
For me the biggest issue has been cladding profile. With the viscount, its got a very shallow profile so much more likely to remain water tight. The millard on the other hand has gaps that are huge and I dont think the mastic would last long enough as a gap filler.
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Post by rocketrod on Sept 25, 2016 18:14:31 GMT 10
Absolutely agree with both u guys. I totally understand that using sikaflex or silicone is in for the long haul but basically a glue as such and to pull apart is nearly impossible without destroying my cladding. I have read about the mastic combined with the tape. Place the tape around the frame of the window and then apply mastic on top of the tape....Or do you guys recommend just mastic out of the cartridge without tape? Keep in mind I have the Log cabin profile 72 era. recommendations appreciated  I also have a 4 seasons roof, camec recommend using tape with a bead of non acetic silicone around the tape, I just realistically do not want to use silicone but I supose once the hatch is sealed on a flat roof it should not need attention for at least 10 years so am possibly sold on the tape and non acetic silicone for hatch. But defs not going to use sikaflex or silicone on windows. So in a nutshell do u guys recommend tape and mastic on windows or just mastic from cartridge gun? TIA |
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Post by tasmillard on Sept 25, 2016 18:21:43 GMT 10
There are a few members who have loads of experience with mastic, like Mustang. These guys will be able to provide the finer details |
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Post by rocketrod on Sept 25, 2016 18:39:32 GMT 10
Thanks buddy, hope to hear from them |
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Post by Deleted on Sept 25, 2016 18:46:36 GMT 10
Absolutely agree with both u guys. I totally understand that using sikaflex or silicone is in for the long haul but basically a glue as such and to pull apart is nearly impossible without destroying my cladding. I have read about the mastic combined with the tape. Place the tape around the frame of the window and then apply mastic on top of the tape....Or do you guys recommend just mastic out of the cartridge without tape? Keep in mind I have the Log cabin profile 72 era. recommendations appreciated I also have a 4 seasons roof, camec recommend using tape with a bead of non acetic silicone around the tape, I just realistically do not want to use silicone but I supose once the hatch is sealed on a flat roof it should not need attention for at least 10 years so am possibly sold on the tape and non acetic silicone for hatch. But defs not going to use sikaflex or silicone on windows. So in a nutshell do u guys recommend tape and mastic on windows or just mastic from cartridge gun? TIA Have a look here Mustang does great work He is the King of bling but under the shine is great stuff also  ditzygypsy.proboards.com/thread/3044/17-viscount-supreme-vincent?page=5 |
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Post by awbeattie381 on Sept 28, 2016 13:53:07 GMT 10
I am also in the midst of resealing windows...caulking tape is all I am using. I figured that if the original method can last 40 years without leaks and I can still remove it with minimal fuss, why not use the same method. I have only done 3 windows so far, but not sure if I have used too much. I expect when the weather warms up, the tape will soften and ooze out of the sides (which I will then trim). ditzygypsy.proboards.com/thread/2811/1974-viscount-valiant-47321v-first?page=3 |
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Post by doublechevron on Sept 29, 2016 13:25:58 GMT 10
Actually, I reckon silicon is brilliant stuff for anything you don't want to remove. The 30year old roof seems in my caravan were troweled with silicon. It's as sound as the day it was applied. I resealed all lights, vents and tru-molds with white roof and gutter. I wouldn't use anything else. Mastic is for doors and windows, that may need to come up. Have a look at the sealant threads. You can see how I did the windows and tru-molds on mine here: ditzygypsy.proboards.com/thread/3241/time-another-project?page=6eg:  mastic for doors and windows ... with foam to protect the mastic from the elements...  this leaves you seeing only the foam from outside...  but generates so much pressure to "squeeze out" the sealer you end up with the mastic squeezed all the ways through inside, filling every void, so there is no way it can leak. I did the same thing with the roof and gutter silicon  Your after the hydraulic pressure of "squeezing" the sealer out to fill any air pocket and ensure a 100% water tight seal.  I didn't work this out myself. I've just copied "Cabcar" the caravan builder and repairers advice from the caravaners forum. seeya shane L. |
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Post by tasmillard on Oct 1, 2016 9:31:32 GMT 10
As with Shane, I also do it this way. I use cartridges, apply loads until it oozes out, then scrape away excess. I have used sikaflex 291 and now butyl mastic. Both are very similar in consistency out of the tube, however cleaning the excess is much easier with butyl as you scrape way and clean edges with turps and a rag. For the sika it was a mess,,lots of rags and turps and mess all round.
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Post by rocketrod on Oct 1, 2016 17:20:24 GMT 10
Wow
Thank you heaps for all your advice I must say very well explained this is the way I have seen it done on a couple of videos also so this is definitely the way I am going. thanks again
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Post by Mustang on Oct 8, 2016 7:52:19 GMT 10
While it is general opinion, mastic will need re-doing,
I expect keeping the van under cover away from the elements will extend the life of the product.
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Post by Deleted on Oct 8, 2016 11:35:30 GMT 10
While it is general opinion, mastic will need re-doing, I expect keeping the van under cover away from the elements will extend the life of the product. I was concerned re the mastic in our old girl but it is still pliable not hard after 48 years but every day of those 48 she has been under cover even now she is in a shed again and only goes out for VV weekends so my caravan builder mate tells me leave it for a few years before doing anything no sense fixing something that is not broken |
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Post by rocketrod on Oct 8, 2016 12:33:42 GMT 10
Thanks John
Yeah im going with the mastic. Im just painting the new log profile cladding then ill set the windows in a week or 2 😊
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Post by Mustang on Oct 8, 2016 17:57:37 GMT 10
Thanks John Yeah im going with the mastic. Im just painting the new log profile cladding then ill set the windows in a week or 2 😊 One thing about mastic, if its not what you want , its easy to change. |
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Post by rocketrod on Oct 9, 2016 10:33:24 GMT 10
Absolutely, the more people I talk to recommend the Mastic Even the caravan joints. So ive ordered a few rolls of mastic. 😊
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Post by Mustang on Oct 9, 2016 14:42:49 GMT 10
Thanks John Yeah im going with the mastic. Im just painting the new log profile cladding then ill set the windows in a week or 2 😊 So the new cladding I expect was supplied by "Barnes", I assumed it would be supplied painted?? I don't feel so bad now spending $1000.00 on paint products. |
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Post by rocketrod on Oct 9, 2016 18:18:22 GMT 10
No it comes in beautiful gloss white. But I am spray painting the bottom half in Roman Red to match my 60 El Camino which will be towing it. But the cladding comes in a Brilliant Gloss White 😊
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Post by Mustang on Oct 9, 2016 18:21:47 GMT 10
No it comes in beautiful gloss white. But I am spray painting the bottom half in Roman Red to match my 60 El Camino which will be towing it. But the cladding comes in a Brilliant Gloss White 😊 That's not such a big job then? should look smick |
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Post by Deleted on Oct 9, 2016 18:27:06 GMT 10
No it comes in beautiful gloss white. But I am spray painting the bottom half in Roman Red to match my 60 El Camino which will be towing it. But the cladding comes in a Brilliant Gloss White 😊 That's not such a big job then? should look smick Come on Mustang there is a trend developing here which of yours is changing colour "Vincent" or the "Stang" colour co-ordination is a must   |
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Post by tasmillard on Oct 9, 2016 18:59:56 GMT 10
Mustang just should go with polished metal, for all of it |
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Post by rocketrod on Oct 9, 2016 20:13:29 GMT 10
Its looking awesome. I have sprayed the front in 2K and have my sides undercoated. I will hook into the rear next week trying to fit the 1960 El Camino tail lights is going to be a nightmare but I will get it 👍
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Post by rocketrod on Oct 22, 2016 19:23:10 GMT 10
Thank you all for your advice. I Resealed all my windows today with Mastic rolls. Might I say it was an awesome job to do very neat and tidy.so I am considering doing all my external trims J moulds etc with Mastic instead of sikaflex. Like it was done back in the day. I know most guys will use silicone for external trims, what are ur thiughts Mastic or sikaflex for external trims?
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at least either the tape or butyl mastic works! and in the future if need be the window can be removed without damage 
silycone should not be allowed near any caravan IMHO nor should sikaflex unless you have no intention of keeping the caravan for a while and it is going to be sold quickly 
I also have a 4 seasons roof, camec recommend using tape with a bead of non acetic silicone around the tape, I just realistically do not want to use silicone but I supose once the hatch is sealed on a flat roof it should not need attention for at least 10 years so am possibly sold on the tape and non acetic silicone for hatch. But defs not going to use sikaflex or silicone on windows. So in a nutshell do u guys recommend tape and mastic on windows or just mastic from cartridge gun? TIA 
