Matthew Brown stain only at the front doesn't sound too threatening, much more important from a safety point of view is the area just forward of the 'B' pillar, where the seat belt attaches. Perhaps it will be sufficient in your case, to prevent further deterioration, to block the drain hole below the bottom of the 'A' pillar and temporarily fill the bottom with, say, thinned waxoyl. Capillary action should get it to the stained area. Also, coat inside the steel the full length of the sill with waxoyl (thinned by warming) using the pump and long tubes available for this sort of task. You'll need to drill a hole, say 20mm, into the sill as the two holes for the seat belt mount are too small.
John & Matthew Brown staining on the fibreglass on the inside below the doors is one sign but a look inside is also necessary because if the member is rotting from the inside you won't see any staining until it has perforated. A borescope will reveal all https://www.amazon.co.uk/Inspection-Depstech-Waterproof-Borescope-Smartphone-Black/dp/B01NBFTAHE/ref=sr_1_5?dchild=1&keywords=Borescope+Inspection+Camera&qid=1616832893&sr=8-5 Best regards Bill Bill Allison Borders Group of Advanced Motorists National Observer (Cars) 07702 739474 01750 22550 (before 21:00 please) www.bgam.org.uk and www.bgam.org.uk/ydi www.iamroadsmart.com www.facebook.com/BordersAdvancedMotorists The contents of this message, and any attachments, may include information that is private and confidential and should not be read by persons other than the intended addressee(s). IAM RoadSmart nor the sender accepts any responsibility for viruses and it is your responsibility to check the email and any attachments. If you have received this email in error, please inform the sender and delete the message from your computer. IAM RoadSmart is a trading name. IAM RoadSmart is a trademark. Charity number: 249002 (England and Wales) SC041201 (Scotland). Registered Address: 1 Albany Place, Hyde Way, Welwyn Garden City AL7 3BT. On Friday, 26 March 2021, 15:34:26 GMT, mgaskin via Quantum Owners Group <quantumowners@googlegroups.com> wrote: >Finally, check that no water has entered the sills. Poor fibreglass lay-up by >QSC at the front of the sill in front of the 'A' pillar led to me having to >replace the metal sill - it had rotted away to nothing near the seat belt >attachment! >(https://quantumforum.proboards.com/thread/522/quantum-saloon-full-rebuild?page=2) This sounds like a possible (and alarming) explanation for the brown patch under the gelcoat on my 2+2 below the door hinges in the sill. I've asked for a logon for the proboards to look at your link. Matthew -- -- You received this message because you are subscribed to the Google Groups "Quantum Owners Group" group. To post to this group, send email to quantumowners@googlegroups.com To unsubscribe from this group, send email to quantumowners-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/quantumowners?hl=en IMPORTANT NOTE: All information presented herewith is provided on an "As Is" basis, without warranty or the implication thereof. Neither the Quantum Owners Club nor the individuals associated with the Quantum Owners Club or in the preparation of the above information shall have any liability to any person or entity with respect to liability, loss, or damage caused or alleged to be caused directly or indirectly by the instructions contained within this or related message(s). --- You received this message because you are subscribed to the Google Groups "Quantum Owners Group" group. To unsubscribe from this group and stop receiving emails from it, send an email to quantumowners+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/quantumowners/00c101d72255%247f6fd900%247e4f8b00%24%40yahoo.com. -- -- You received this message because you are subscribed to the Google Groups "Quantum Owners Group" group. To post to this group, send email to quantumowners@googlegroups.com To unsubscribe from this group, send email to quantumowners-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/quantumowners?hl=en IMPORTANT NOTE: All information presented herewith is provided on an "As Is" basis, without warranty or the implication thereof. Neither the Quantum Owners Club nor the individuals associated with the Quantum Owners Club or in the preparation of the above information shall have any liability to any person or entity with respect to liability, loss, or damage caused or alleged to be caused directly or indirectly by the instructions contained within this or related message(s). --- You received this message because you are subscribed to the Google Groups "Quantum Owners Group" group. To unsubscribe from this group and stop receiving emails from it, send an email to quantumowners+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/quantumowners/2039551227.1399294.1616833243639%40mail.yahoo.com.