sylvaman Posted December 30, 2019 Share Posted December 30, 2019 On my last 7 type build , (Years ago) i painted/coated underneath the wings with a rubberised type of paint , to stop stones chipping the underside and give some surface protection. Plus added benefit of dulling that cringe making sound of stones hitting . Anyway...... i see that CBS do a modern equivalent called Wunderseal synthetic elastomer. Has anyone tried it ..... or considered it unneccessary as thickness /design of modern Caterham glassfibre doesn't require it. Link to comment Share on other sites More sharing options...
StevehS3 Posted December 30, 2019 Share Posted December 30, 2019 They certainly do still crack (star cracks) I'm afraid to say. Link to comment Share on other sites More sharing options...
Drumster Posted December 30, 2019 Share Posted December 30, 2019 I've always used Isoflex Liquid Rubber and had good results Link to comment Share on other sites More sharing options...
Bricol Posted December 31, 2019 Share Posted December 31, 2019 I used something called Carlife Rubbercoat when I built it in 2001 - no starcracks at all until an attacking people carrier rather overcome the protection of rubber inside.Used Isoflex liquid rubber on the replacements and so far, a few years later, no starcracks, and my back road commute home is rather ropey so it certainly gets tested!It even survived having a rear lower shock bolt snap, putting the tyre into contact with the inside of the wing at 40mph Link to comment Share on other sites More sharing options...
sylvaman Posted January 8, 2020 Author Share Posted January 8, 2020 All sounds excellent advice . Thank you. Been reading the adverts ; Did you need to prime before using the Isoflex product ? Or is that really just when using on flat roofs . Link to comment Share on other sites More sharing options...
Bricol Posted January 8, 2020 Share Posted January 8, 2020 I cleaned them well, wiped down with brake cleaner, allowed to dry and then started covering everywhere in black rubber . . .Mask the outside edges! And wear gloves.Withstood the tyre rubbing on it, so I'd say primer not required. Link to comment Share on other sites More sharing options...
Drumster Posted January 8, 2020 Share Posted January 8, 2020 What he said Link to comment Share on other sites More sharing options...
Area Representative Golf Juliet Tango Posted January 8, 2020 Area Representative Share Posted January 8, 2020 I found 750ml from Homebase at £20.Or 2.5l from Screwfix for £40I can not see that I will need 2.5 litres, or will I? Link to comment Share on other sites More sharing options...
7 wonders of the world Posted January 8, 2020 Share Posted January 8, 2020 A Fiver cheaper in B & Qhttps://www.diy.com/departments/isoflex-black-roofing-waterproofer-0-75l-tin/35462_BQ.prd?ds_rl=1272379&ds_rl=1272409&ds_rl=1272379&gclid=EAIaIQobChMIgdnm-pj15gIVC7TtCh2NGAzgEAQYASABEgLO3PD_BwE&gclsrc=aw.ds Link to comment Share on other sites More sharing options...
sylvaman Posted January 10, 2020 Author Share Posted January 10, 2020 Well ....I bought the Isoflex, (2.5l Screwfix ) and put one coat on rear wing this afternoon as a trial.It goes on quite thick , going to let dry overnight ...hopefully, and decide if it needs another coat. Probably because its not that warm out and i should have warmed the tin by bringing in house overnight . Which i have done now. At the rate the first coat went on , i am glad i bought the 2.5l tin. On the Instructions it does say minimum thickness 1mm, using two coats, but as this is intended for flat roof sealing/repairs , i am thinking one will probably be enough for our usage. Link to comment Share on other sites More sharing options...
Area Representative Golf Juliet Tango Posted January 11, 2020 Area Representative Share Posted January 11, 2020 Thank you both.Sylvaman, are you doing four wings of a Seven?I'm planning to do the front wing sections of the bonnet of my 21 (so a large(ish) area) Link to comment Share on other sites More sharing options...
7 wonders of the world Posted January 11, 2020 Share Posted January 11, 2020 Stephen,Not seen a 21 close up so this may be a non starter / bollox but would it be possible to create an arch liner along the lines of those used in most tin tops now....?Might offer better long term protection to the bodywork...? Link to comment Share on other sites More sharing options...
Area Representative Golf Juliet Tango Posted January 11, 2020 Area Representative Share Posted January 11, 2020 7WotW. That sounds like much harder work! I'm spending far more than a sane person would already... Link to comment Share on other sites More sharing options...
sylvaman Posted January 11, 2020 Author Share Posted January 11, 2020 Hi Stephen. All four under wings treated . 1 coat . Still have just over half the tin left. Link to comment Share on other sites More sharing options...
Area Representative Golf Juliet Tango Posted January 11, 2020 Area Representative Share Posted January 11, 2020 Thanks. In which case 750ml should do me well. Link to comment Share on other sites More sharing options...
BJH_360S Posted January 20 Share Posted January 20 For those of you who have used Isoflex liquid rubber, did you use a primer or is that unnecessary for use on the underside of the rear wings? Link to comment Share on other sites More sharing options...
Beagler Posted January 22 Share Posted January 22 Just got some flat roof rubber repair from B&Q but clean under the arches thoroughly and degrease with white spirit before painting it on. Link to comment Share on other sites More sharing options...
Alan Reeves Posted January 23 Share Posted January 23 ive used Flashband on two cars - no starring heat the tape up gentle and it sticks under the clean wing well adds a couple of pounds but works well, comes in various widths Link to comment Share on other sites More sharing options...
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