[quote author=larSTI8 link=topic=30408.msg453888#msg453888 date=1385417551]
[quote author=gerry link=topic=30408.msg453759#msg453759 date=1385331836]
how much is it to underseal the body .?
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not sure really, doing it my self , so basically just materials, I will be using a lift and stripping a bit for nice job.
Jamie I think done his type r, maybe he could share some light
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Sorry lads... just seen this now.
@ Gerry... depends on what level of strip-down you are willing to go. I'm not sure of many companies here in Ireland that do it to the same standard as the UK... but a basic underseal would involve power washing the underside and arches. Treating any rust... and then undersealing floor and arches and then spraying cavity wax in the inner sills and chassis legs. There are companies that do this in the UK and who have a guide to what they do...
http://www.jrclassics.co.uk/procedure
But they charge in the region of 420 pound sterling to do this on an Import car like an Impreza.
I haven't actually done my own yet, But as I'm doing such a major rebuild with my car the shell has now being fully stripped an will be getting an extensive job done on it now. I stripped the whole underside bare, ground back surface rust with Roloc Scotch brite pads on a grinder, treated the area with rust killer to be 100% sure... etch primed it... and then resprayed with whole underside with Barcaot Primer. Unfortunately I recently decided to fit a full cage and the new cage box section feet that need to welded in place will damage the lovely re-primed underside which will mean I have to respray it again.
Once that's done though you need to spray several coats of high-build primer on... followed by a good underseal. I'd recommend either Hidrotex or 3M's Sprayable sealer as the more commonly used Schultz and Waxoil tends to deteriorate with age and can lift from the surface and actually trap moisture between it and the panels.
Once you've undersealed it you can then spray your top coat.
The above is the pretty extreme way of doing and in hindsight I'd rather have put the car on a rotisserie and soda blasted the underside back to bare metal. In fairness the shell was very clean as it was low-mileage and had seen very little of Irish roads so it had very little rust to begin with and this probably would have just been over kill and added too much to already tedious long build.