Oneball
CCCUK Member
Damming tape of the right width and height hopefully!
I did read an article with the specs on somewhere. Will have to find it again.....
Exciting day - rebuild of 78 coupe
- Thread starter johng
- Start date
Damming tape of the right width and height hopefully!
I did read an article with the specs on somewhere. Will have to find it again.....
johng
CCCUK Member
If you find that article, I have another couple of questions:-
Should the tape be self adhesive on both sides (like glazing tape), or just one?
Why stick it to the glass, not the windscreen surround?
Oh and any idea where you can get this tape from, if it's not just glazing tape?
Should the tape be self adhesive on both sides (like glazing tape), or just one?
Why stick it to the glass, not the windscreen surround?
Oh and any idea where you can get this tape from, if it's not just glazing tape?
Forrest Gump
CCCUK regional rep
I used a foam glazing tape when I refitted my screen a few years ago. I hadn’t ever seen it done that way before for a car windscreen but I used to work in the window industry and at one time glazing tape was used a lot to hold in double glazed units. Holding the glass away from the frame at the right height is critical or you’ll get a gap when the chrome goes back on. I think I used a 9.5mm thick double sided tape, closed cell (open is not waterproof). I stuck the tape to the frame then glazing sealant to the outer side of that. If you use double sided tape then you only get one go at dropping the screen into place, but I wanted to know the screen was going to be well held in.
johng
CCCUK Member
Hi Andy, I remember you telling me that's how you'd done it. Did you apply the sealant after putting the windscreen in place? I can't actually find anyone selling damming tape, Ecklers and the like sell a butyl adhesive strip instead. Presumably all I need is closed cell foam with single side adhesive in the right dimensions (whatever that is), but then I also need to know how much it will compress to get the height right. Think it would best if Tim gets a shift on and does it first 
Oneball
CCCUK Member
Just google windscreen damming tape.
www.crlaurence.co.uk
FC250R - CRL Single-Sided Adhesive Windshield Support Foam Tape - 1/4" x 16'
These CRL Foam Windshield Support Tapes have been used in the past as a support device when using medium viscosity urethanes, but is now a required item when replacing numerous windshields that need additional sound proofing in order to keep wind noise to a minimum
Forrest Gump
CCCUK regional rep
I gunned a fat bead of sealant next to the foam tape before dropping the screen in place. With screen in place I then smoothed the sealant into the gap and then gunned in a bit more if necessary to make it neat. Can’t do that along the lower edge obviously, but not critical there.Hi Andy, I remember you telling me that's how you'd done it. Did you apply the sealant after putting the windscreen in place? I can't actually find anyone selling damming tape, Ecklers and the like sell a butyl adhesive strip instead. Presumably all I need is closed cell foam with single side adhesive in the right dimensions (whatever that is), but then I also need to know how much it will compress to get the height right. Think it would best if Tim gets a shift on and does it first
The butyl tape is the Oem way I believe, I did actually order some of that from Zip to see what it looked like but they declined to ship it. I think possibly it was in a kit containing some solvent.
The screen‘s cover over the frame isn’t that much along the top and sides so the remaining bond “patch“ for the sealant is not very wide, hence why I went for a double sided tape as belt and braces fixing.
Ill see if I’ve made a note anywhere but fairly sure I used 9.5mm - 3/8 thick tape. It will stay at that height overall one installed but will adapt to undulations between frame and glass. My chrome went back on nicely with no gaps.
If you place the screen against the frame there probably will be a few high spot or gaps around between the two. Foam tape and sealant can accommodate that without putting a pressure point on the glass. Don’t know if butyl would be so forgiving or seal as well.
Forrest Gump
CCCUK regional rep
Tim, the added bonding of double sided tape might help the structural stiffness from the screen on your race car.
Forrest Gump
CCCUK regional rep
Definately, but if foam tape is used as a damming strip, there’s not actually much width left for sealant...not like the 1” wide patch on a modern car. I used double sided tape as opposed to single sided to get some extra adhesion from the taped area also, for what that’s worth!
johng
CCCUK Member
Not quite that easy, this site only wants to sell to businesses and they have a minimum order of 12 rolls. Of course if you'd like to buy the 12 and send me what you don't needJust google windscreen damming tape.
FC250R - CRL Single-Sided Adhesive Windshield Support Foam Tape - 1/4" x 16'
These CRL Foam Windshield Support Tapes have been used in the past as a support device when using medium viscosity urethanes, but is now a required item when replacing numerous windshields that need additional sound proofing in order to keep wind noise to a minimum
.Forgot about windscreens for this afternoon and fitted the remainder of the carpet, seat belt and drivers seat. Really looking like a car now. If it stops raining I might take it for a drive onto my driveway and give it a wash, the log burner does create a bit of dust in the garage!
Forrest Gump
CCCUK regional rep
Looking superb John
Shame you have to put up with traces of soot from the log burner in your warm and spacious workshop!
Shame you have to put up with traces of soot from the log burner in your warm and spacious workshop!
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johng
CCCUK Member
Thanks for the compliments guys. I'm very pleased with how it's turning out, but of course you are only seeing photos which do tend to hide the blemishes.
The seats are just recovered Steve, with some extra foam in them to pad them out a bit. They are a good example of something that looks pretty good to me, but are definitely not perfect.
The seats are just recovered Steve, with some extra foam in them to pad them out a bit. They are a good example of something that looks pretty good to me, but are definitely not perfect.
johng
CCCUK Member
The sealer turned up today, so I fitted the windscreen corner pieces and t top trim properly just to please Tim I also fitted my windscreen myself (the old cracked one that is) and Andy is right, there is going to be very little space for adhesive once the damming tape is in place, particularly across the top of the screen. Things didn't all go according to plan though, I realised I'd fitted one of the seat belt stalks the wrong way round, so had to remove the seat to fix this. When I put the seat back in, one of the weld nuts let go. It was fun getting this tightened up on my own (could do with 10ft long arms really!). I also fitted the B pillar weatherstrips, so hopefully tomorrow I can have another go at the window adjustment.
I also fitted my windscreen myself (the old cracked one that is) and Andy is right, there is going to be very little space for adhesive once the damming tape is in place, particularly across the top of the screen. Things didn't all go according to plan though, I realised I'd fitted one of the seat belt stalks the wrong way round, so had to remove the seat to fix this. When I put the seat back in, one of the weld nuts let go. It was fun getting this tightened up on my own (could do with 10ft long arms really!). I also fitted the B pillar weatherstrips, so hopefully tomorrow I can have another go at the window adjustment.