What this work involves
Assess wall construction, moisture and suitability. Include window reveals, ventilation and adjacent building elements.
- Internal, external or cavity approach
- Window and floor junctions
- Facade appearance and internal space
Use the following design considerations when coordinating this service with a wider project. Agree which parts apply to your request.
Resolve drainage, fixings and replaceability of exterior finishes together.
What the drawing needs to explain
Detail the lower edge and the junction with another material. Show where water can drain and how an element can be replaced without opening the entire finish.
Allow for later maintenance
Create a maintenance record for each material, including access points and product information. Base the first inspection on the chosen system and actual exposure.
Which trade-off matters?
Uniform colour and low maintenance are not automatically the same choice. Compare a coated surface with a material allowed to change visibly, including access for future maintenance.
Cost factors for this service
Costs depend on wall build-up, access, investigation and final finishes. 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 external wall & cavity insulation. Identify the elements that should remain.
Questions about the work
What should I discuss before arranging external wall & cavity insulation?
A cavity is not automatically suitable for filling. Prior investigation determines an appropriate approach for the wall and surroundings.
The design situations here illustrate choices; they are not completed projects or a diagnosis of your property.

