Oxford Method Research Programme

a) Joint opened up but otherwise sound. 

Example

• Thoroughly clean the surface of area to be restored using Stelmax cleaning fluid.
• Seal joint with a neat bandage 10mm wide x 3mm high minimum using Stelmax filler paste applied with a caulking gun.

b) PVC bubbled, joint opened up and peeling and steel sheet rusting 

.
Example

• Carefully peel back any defective PVC to a firm straight cut edge.
• Cut back all corroded metal to a firm edge with a reasonable thickness of metal remaining. Abrade to a clean bright surface and paint edges with Stelmax paint/paste mixture as before described one coat only.
• Prepare new Plastisol joint formed to shape and drilled at 150mm centres as edges only. Offer joint up to existing panel joint and mark holes and drill panel. Apply a continuous line of low modulus silicone sealing to the back of the new joint, press into position and pop-rivet. Clean off any protruding sealant and finish off with a neat bandage, Stelmax joint as previously described elsewhere. Fill in rivet heads with a neat blob of Stelmax paste.
  See Appendix F
• Seal all joints within the basic panel including those around the glazing frame with a neat fillet of Stelmax paste, minimum face width 8mm applied with a caulking gun.