What this work involves
Assess existing layers, moisture, falls and roof edges. Select a system suited to the complete assembly and intended use.
- Roof build-up and material
- Drainage and overflow
- Edges, upstands and penetrations
Use the following design considerations when coordinating this service with a wider project. Agree which parts apply to your request.
Choose openings that remain usable in the second layout scenario.
What the drawing needs to explain
Draw two uses within the same floor plan. Mark walls, doors and connections that stay unchanged and identify the alteration actually needed later.
Allow for later maintenance
Keep drawings of unused provisions too. Distinguish items merely prepared from those already connected and assessed.
Which trade-off matters?
Preparing for every future possibility can unnecessarily increase the budget. Compare simple preparation, such as accessible routes and a considered layout, with provisions that might never be used.
Cost factors for this service
Costs depend on area, removal work, insulation and detailed junctions. Ask for the scope and selected specification to be described separately.
Bring this to the discussion
Photographs of the existing situation, available drawings and your requirements for flat roofs, bitumen & epdm. Identify the elements that should remain.
Questions about the work
What should I discuss before arranging flat roofs, bitumen & epdm?
An additional layer is only appropriate if the existing substrate is suitable. Assess moisture and the condition of underlying layers.
The design situations here illustrate choices; they are not completed projects or a diagnosis of your property.