Aluminium Windows for Renovations and Extensions Melbourne
Renovation and extension builders often need new aluminium windows and doors to coordinate with existing walls, finishes and openings. JL Windows & Doors can review architectural drawings and schedules for project-based supply quotations across Melbourne.
Renovation & Extension Windows: Existing Opening and Waterproofing Checklist
Replacing windows in an established Melbourne home is different from ordering windows for a new build. Builders should assess existing frame removal, opening condition, wall construction, flashings and interior/exterior finishes before confirming manufacturing sizes or the scope of work. The details below are project planning prompts, not a universal installation detail.
Existing Opening and Removal Scope
Record the existing window type, frame and reveal dimensions, wall material, structural opening and any signs of deterioration. Confirm whether the old frame is fully removed, retained in part or requires repair to surrounding brickwork, timber, plaster or cladding. The final site measure should be approved before manufacture.
Head Flashing, Sill Drainage and Wall Interfaces
Check the continuity of head flashing, sill support, drainage paths and the weather-resistive barrier. For cavity brick construction, existing damp-proof courses (DPC), cavity drainage and weep holes must not be blocked by replacement work. Detail the interface between new frames and existing masonry, cladding or extension walls to suit the building and applicable requirements.
Responsibility for Waterproofing and Making Good
Agree who supplies and installs flashings, sealants, packers and fixings, who repairs wall finishes and who verifies weatherproofing after installation. Installation requirements depend on the selected window system, substrate, exposure and relevant building standards. Where structural or water ingress issues are identified, obtain appropriate professional advice before proceeding.
New and Existing Windows on the Same Project
For extensions, mark new openings and replacement openings separately in the window schedule. Confirm colour consistency, frame setbacks, glazing performance, sill and threshold heights, and any changes required by the energy report. See the custom home builder package guide, supply-only responsibilities and south-east Melbourne window replacement.
Request a renovation quote: send the latest drawings, window schedule, existing opening photos, suburb and scope to [email protected] or submit a project enquiry.
Get a Window and Door Quote for Your Renovation
For Melbourne renovation and extension projects, email the latest plans, a schedule identifying new and replacement openings, existing frame photographs and any energy or glazing requirements. Please note site access, flashing interfaces and whether you need supply-only or an installation quote.
Replacing Existing Windows
Provide photographs, approximate opening dimensions, wall construction and any access restrictions. Confirm which existing frames will be removed and who is responsible for making good surrounding finishes. Review our Melbourne window replacement information.
Matching the New Extension
Discuss frame colours, sightlines, opening styles, glazing and thermal performance early in the design. Existing building conditions may require site verification before manufacturing dimensions are approved. Compare aluminium windows and sliding and stacker doors.
Quote Documents and Scope
Send the current drawing revision, window schedule, energy report, location and expected project programme. Distinguish existing-to-remain openings from replacement and new extension items. Ask for supply-only or installation scope to be identified separately.
Other Products for Renovation Projects
Explore replacement flyscreens, aluminium privacy screens and roof windows and skylights, subject to product availability.
Request a Renovation Builder Quote
Send project documents to [email protected] or use our contact page. For broader builder services, see JL builder supply.
