Europe ยท Window Manufacturer
Munster Joinery โ Window Cleaning Guide
๐ฎ๐ช Ireland ยท Last reviewed by Justin Orloff
Quick Facts
Founded
1973
HQ
Ballydesmond, Co. Cork, Ireland
Employees
1,800+
Facility
960,000 sq ft
Materials
uPVC, aluminium
Specialty
Only Passive House certified window range in the Irish market
Market
Ireland and UK residential and commercial
Brand at a Glance
- Ireland's largest window and door manufacturer with 50+ years of production from Cork
- Only Passive House certified window range available in the Irish market
- 1,800+ employees across a 960,000 sq ft facility serving Ireland and the UK
Product Range
- uPVC casement, tilt-and-turn and sliding windows for residential and commercial
- Aluminium windows and doors for commercial and contemporary residential
- uPVC and aluminium entrance doors and patio door systems
- Passive House certified window systems for high airtightness specification
Why This System
Munster Joinery's Passive House certification sets them apart in the Irish market. Passive House windows are engineered to extremely tight tolerances for airtightness and thermal bridging - the sealing systems and hardware are more sophisticated than standard uPVC windows. This matters for cleaning: the multi-point locking hardware and compression seals need attention without over-lubrication that attracts dust.
Ireland's climate means north-facing Munster Joinery frames accumulate moss, algae and black mould at a rate that surprises property owners used to drier climates. Passive House frames have deeper profiles and more complex seal geometry than standard windows - grime builds up in the seal recesses. Atlantic coastal properties from Cork to Galway carry salt deposits on frames that accelerate rubber seal degradation if not removed regularly. Soft Irish water leaves less mineral scale but organic biofilm is the dominant challenge.
Step 1 of 2: Manufacturer Recommendations
Official Care Guidance
Step 2 of 2: The Orloffs Protocol
The Orloffs Protocol
This is how I clean Munster Joinery windows. The tools and technique below come from 25 years of daily professional work on the glass. Every step has been tested on real installations and adapted specifically for Munster Joinery systems.
Pro Tools
My daily tool list. This is what I carry to every job.
Follow these steps in order. Each one builds on the last. This is the same sequence I use on every Munster Joinery installation.
- 1
Preparation -- before any water touches the glass
Fill the bucket with at least 10 litres of water. Add soap for cleaning power -- enough to cut through environmental deposits, not so much you are fighting foam.
Before touching the glass, brush down the surface to remove loose dust, spiderwebs, and debris. Any grit left on the glass during the wash phase risks scratching during agitation.
Check the aluminium frame condition before you start. Confirm which cleaning product is safe for that surface before opening any bottle.
Cover anything below the windows that cannot be moved.
- 2
Agitation -- apply and work the solution
Dip the microfiber T-bar completely into the soap water, both sides. Remove excess water with your hand so it does not drip. Apply the solution across the entire glass surface with overlapping passes.
The goal is to fully dissolve and release every deposit from the glass surface. Anything not released during agitation gets transported across the glass by the squeegee as a smear.
For stubborn spots -- insect marks, salt residue, environmental deposits -- re-apply soap water and allow it to soak for a full minute before agitating again. Use more soap water, not more pressure.
For panels above arm reach: attach the T-bar to an extension pole. Work in sections -- top first, then middle, then bottom -- keeping each section wet until you squeegee it.
Rinse the T-bar cover regularly during the job. A dirty applicator causes microscopic scratches that accumulate over time.
- 3
Detail the frame edge before squeegeeing
Use your 100% cotton towelling rag, finger pressed into the fabric, to work into every junction and remove pooled soap water before the squeegee pass.
This prevents drips running down onto already-cleaned areas during squeegeeing and keeps soap water out of drainage channels.
On Munster Joinery aluminium frames, pay particular attention to the bottom edge where glass meets the frame sill -- water pooled here runs into drainage openings and leaves residue over time.
- 4
The squeegee
Tilt the squeegee at a slight angle so soap water spills from one side of the channel only -- not both. If the rubber is jumping or squeaking, either the rubber is not lubricated enough or the glass surface has warmed.
Cutting in: start with the rubber blade making first contact on a dry edge of the glass.
Side to side: horizontal passes across the panel. Works well on wide sections. Top to bottom: vertical passes down the panel. Works well on tall narrow sections.
The J tune: one smooth unbroken motion top to bottom, wrist rotating at each end to reverse without lifting the rubber. The most efficient method on larger panels -- but it requires training before applying it to premium glass.
Wipe the rubber dry after every pass. Overlap each stroke by 2-3 cm.
- 5
Final edge detailing
After squeegeeing, there is always a residual line of water along the bottom edge and at the panel sides. Take a dry cotton rag, fold to a clean corner, and detail these edges in one smooth pass.
On Munster Joinery frames, the bottom edge where glass meets the sill requires the most careful attention. Water left here runs into drainage and leaves residue that affects the next clean.
Rotate the rag to a clean section after every pass. If the rag picks up grit at any point, replace it immediately.
- 6
Frame wipe and hardware check
On Munster Joinery powder-coated aluminium frames: use pH-neutral cleaner only, never abrasive pads or steel wool. Dry immediately after wiping.
Check that all drainage openings are clear and unobstructed. Water must be able to flow freely -- a blocked channel leads to accumulation that affects seal performance over time.
Operate every opening window through its full range. Stiff handles or resistance at locking points indicate hardware that needs lubrication. Flag it to the owner rather than forcing it.
Pro Tips
- North and east-facing frames in Cork, Kerry and the west coast need biocide treatment at least once a year - moss re-establishes fast in Ireland's humidity.
- Passive House multi-point locking hardware should be wiped dry after cleaning - hardware exposed to standing moisture corrodes faster than standard single-point locks.
- On coastal properties, pay extra attention to the bottom frame rail and sill - salt deposits concentrate here from rain splash and prevailing Atlantic wind.
What NOT To Do
- Do not use pressure washers on Passive House window seals - the compression seal system is sensitive to direct high-pressure water that can force water past the airtight barrier.
- Do not use bleach directly on uPVC frames - discolours the profile and degrades the surface over time.
- Do not leave wet moss or algae on rubber seals - organic acids in biological growth degrade EPDM rubber seals and reduce their lifespan.
Bundle Kits and Tool Recommendations
Bundle Kit
Cleaning Frequency
Every 8 weeks for most Irish residential properties. Coastal properties and north-facing facades: every 6 weeks. Annual biocide treatment for persistent moss on sheltered north-facing frames.
Frequently Asked Questions
Field Notes
โBallydesmond itself sits in one of the wetter parts of Ireland - Munster Joinery designs their products knowing what Irish weather does. In practice, their Passive House frames hold up well to moisture but the seal geometry traps organic debris. On new builds, check that the post-installation protective film has been fully removed from frames - film left on for more than a few weeks bonds in Irish humidity and requires specialist removal.โ
Justin Orloff
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