Café room extension, Palmers Garden Centre, Leicester

The challenge

Palmers Garden Centre needed the roof to a smart new café room extension waterproofed to a high standard, with glazed roof lanterns and a clean tie-in to the existing profiled-sheet roof alongside. The centre stayed open and trading throughout, so the work had to be carried out safely and tidily around customers and staff.

Our solution

We installed a fully bonded Icopal Monoplan PVC single ply membrane across the extension roof, around 500 m², dressed neatly around the roof lanterns and upstands. Where the new roof meets the existing sheeted roof, we used a liquid waterproofing system to form a seamless, watertight detail into the profiled cladding.

Scope of work

• Waterproofing the roof of a new café room extension, around 500 m²
• Icopal Monoplan PVC single ply membrane, fully bonded
• Membrane dressed around the glazed roof lanterns and upstands
• Liquid waterproofing to tie the new roof into the existing profiled-sheet roof
• Work carried out safely with the garden centre open and trading

Why this system

Icopal Monoplan is a PVC single ply membrane, so its seams are hot-air welded into one continuous waterproof sheet. Fully bonding it to the deck gives a neat, flat finish that suits a roof with glazed lanterns, where the membrane has to be dressed cleanly around every upstand. The junction with the existing profiled-sheet roof needed something different. A sheet membrane cannot follow the ribs of profiled sheeting neatly, so we used a liquid waterproofing system there: applied wet, it follows the profile and cures into a seamless detail that ties the old roof and the new one together.

The outcome

A clean, modern, fully watertight roof over the new café space, with the lanterns bringing in plenty of natural light, completed without disrupting the garden centre’s trading.