Who We Are
Window Aid Group® is a specialist partner for repair and restoration, serving public, commercial and residential asset owners across Hampshire, East Dorset and West Sussex.
Combining Expertise, Delivering Results
We are formed from the coming together of Window Aid and Frame Coat® — combining hands-on mechanical repair expertise with professional surface restoration to deliver a complete asset solution for windows and doors.
Our focus is straightforward: extend the serviceable life of assets, minimise unnecessary replacements, and protect long-term value.
Repair. Restore. Retain.
Repair
We prioritise repairs as the first course of action, ensuring assets are maintained in good working order and maximising their useful life before any replacement is considered.
Restore
Our focus on restoration goes beyond fixes. We return assets to their optimal condition, supporting longevity and reliable performance while safeguarding their value.
Retain
By retaining and sustaining assets, we protect investments and reinforce responsible stewardship. This principle guides our long-term approach to every portfolio.
How We Work
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Survey
Structured condition inspection across your estate or site
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Quote
Clear, prioritised recommendations with transparent pricing
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Schedule
Works planned around your occupancy, terms, or trading calendar
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Complete
Tidy, professional delivery with documentation and aftercare
The People Behind the Work
Mark Zimmer
Director, Engineering & Technical Delivery
Mark provides technical leadership and oversees engineering governance across window and door repair, refurbishment, façade systems, and lifecycle asset management. With a formal engineering background and extensive senior experience in regulated and high-specification construction environments, Mark has worked at both operational and strategic levels within the fenestration sector.
He holds a GQA Level 3 NVQ Diploma in Fenestration Installation (National Accreditation No. 501/1688/5), awarded by GQA Qualifications Ltd and regulated by Ofqual. His expertise covers major façade and curtain walling projects, as well as founding Window Aid and Frame Coat. Mark is responsible for technical standards, quality assurance, specification compliance, and whole-life asset strategies.
Rachel Zimmer
Director, Operations & Governance
Rachel leads operations, governance, and organisational control for Window Aid Group Ltd. Her career includes senior supervisory and management positions in retail and hospitality, where she held responsibility for staffing, procurement, compliance, and complex day-to-day operations.
Within the Group, Rachel oversees administration, scheduling, client liaison, documentation control, and process compliance — ensuring consistent service delivery, accurate record-keeping, and reliable operational performance.
Health & Safety
We operate with clear health and safety awareness across all sites. Our teams work with site-aware and occupant-aware practices, structured planning, and respect for safeguarding and access requirements. Full compliance documentation is available upon request.
View Trust & Compliance
Where We Work
Window Aid Group operates across Hampshire, East Dorset, and West Sussex, serving a broad range of public sector, commercial, and residential clients. Our local knowledge of these regions allows us to respond quickly, plan efficiently, and deliver consistently across estates of all sizes.
Work with a specialist team you can trust.
Get in touch to discuss your property, portfolio, or project.