Baxi Insulation Strip Set 17 Section S135638

A set of 17-section insulation strips manufactured by Baxi, supplied under part number S135638. The strips sit against the appliance casing and internal panels to hold heat inside the combustion and heat exchanger areas, cutting standing losses and keeping outer surfaces at a safe working temperature. They are a service item, so the material degrades over years of heat cycling and is normally renewed during a strip-down or major repair.

• Insulation is crumbling, flaking or shedding fibres when touched
• Strips have discoloured, hardened or blackened from prolonged heat exposure
• Visible gaps where strips have sagged, compressed or come away from the panel
• Outer casing or access panels running noticeably hotter than usual
• Strips break up or fall away during routine servicing or component access

• Confirm the appliance model against the compatibility list before purchase
• Check the part number on the existing insulation to make sure it matches S135638
• Cross-reference alternative number 1134524 if the old strip carries that marking
• Have the appliance isolated and cool before removing and refitting insulation