Procedure involved stripping existing felt. Replacing water damaged decking. Lowering the inlet that was ‘sitting proud’ in the box gutter. An extra 4th layer of felt was applied to re-enforce the lining of the box gutter. Felt was applied right into the upstands of the window sill to make fully water tight. Client was provided with a 10 year insurance-backed guarantee after final payment was received.

Method:

• Stripped out felt that was over
• Replaced water damaged decking
• Applied 1 layer of 2mm torch-on underlay
• An additional layer was torched onto the box gutter for additional re-enforcement and durability under wet conditions
• Apply 2nd layer of underlay
• Applied 3rd layer of torch-on cap-sheet
• Outlet was re-positioned lower down into decking layer due to sitting too high for sufficient drainage
• All felt was dressed up under lead capping to upstands
• Final layer of torch on felt was applied to underside of double glazing upstands