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Understanding Glass Retrofits

Glass-only window retrofits are still relatively unfamiliar to many homeowners and building owners in Ireland. This section explains exactly what the service is, how it works, and why upgrading the glass — rather than replacing entire windows — is often the most effective way to restore warmth, comfort, and energy performance in existing buildings.

A glass-only window retrofit is a targeted energy-performance upgrade that replaces the sealed glazing units inside existing window frames while deliberately retaining the original frames, sashes, and surrounding structure. The focus of the retrofit is not the appearance of the window, but its thermal and functional behaviour.

To understand why this approach exists, it is important to separate how windows look from how they perform. In most homes, the majority of heat loss associated with windows occurs through the glazing itself rather than the frame. Glass is inherently a weak insulator compared to walls, and older glazing systems — particularly those installed before modern low-emissivity technology became standard — allow significant heat transfer.

A glass-only retrofit replaces those outdated sealed units with modern A-rated glazing that incorporates Low-E coatings, gas-filled cavities, and warm-edge spacers. These features work together to reduce heat loss through radiation, convection, and conduction. The result is a much warmer internal glass surface during winter conditions, which has a direct and noticeable effect on comfort.

Crucially, a proper glass-only retrofit does not stop at the glass. The surrounding window system is assessed and restored. Worn seals are replaced, hinges are adjusted, and locking points are checked to ensure the sash compresses correctly against the frame. Without this step, even high-performance glazing can underperform.

The end result is a window that behaves very differently thermally, despite looking almost unchanged. Rooms feel warmer, draught-like sensations near windows are reduced, and heating systems are no longer compensating for cold glass surfaces. The retrofit is designed to restore performance where it has actually been lost, rather than replace components that are still structurally sound.

The phrase “glass-only” is often misunderstood as implying minimal or superficial work. In reality, it refers to what is retained, not what is ignored.

In a glass-only retrofit, the following elements are intentionally kept in place:

  • The window frames (uPVC, timber, or aluminium)

  • The surrounding wall interfaces

  • Internal plaster, trims, and finishes

  • External render or cladding

These components are retained because, in many buildings, they remain structurally sound and capable of long-term service.

At the same time, the retrofit actively addresses:

  • Removal of the existing sealed glass units

  • Installation of modern, high-performance glazing

  • Replacement of degraded gaskets and seals

  • Mechanical realignment of opening sashes

  • Restoration of proper closing pressure and airtightness

In other words, “glass-only” does not mean “glass-only work”. It means that the primary intervention is delivered through the glazing, supported by whatever mechanical and sealing work is required to allow that glazing to perform as designed.

This distinction matters because many comfort problems are caused by a combination of cold glass surfaces and minor air leakage. Addressing only one of these factors often leads to disappointing results. A glass-only retrofit treats the window as a system and restores the weakest links within that system.

No — and the difference is more than semantic.

Replacing double glazing often refers to swapping a broken or misted sealed unit for another unit of similar specification. This restores clarity and weather protection but does little to improve thermal performance beyond what the window originally offered.

A glass-only retrofit, by contrast, is explicitly an upgrade. The replacement glazing is specified to modern performance standards, often far exceeding the capability of the original installation. Low-E coatings, argon gas fills, and warm-edge spacers are selected deliberately to reduce heat loss and improve comfort.

Just as importantly, a retrofit includes system-level work that basic glass replacement does not. Seals are replaced, hinges are adjusted, and the closing behaviour of the window is tested and corrected. Without this work, air leakage can negate a significant portion of the glazing upgrade.

Another key difference is intent. Basic double-glazing replacement is reactive — something has failed and is being restored. A glass-only retrofit is proactive — performance is being deliberately improved to address comfort, efficiency, and heat-loss issues that were never properly solved by the original glazing.

For this reason, the two should not be conflated. One is maintenance. The other is retrofit.

Comfort in a room is influenced less by air temperature than most people realise. It is heavily affected by surface temperatures, particularly large surfaces such as windows.

Older glazing typically has a low internal surface temperature in winter. This causes two problems. First, occupants lose heat by radiation to the cold glass surface, which creates discomfort even when the room air is warm. Second, air in contact with the cold glass cools, becomes denser, and sinks, creating convective currents that feel like draughts.

Modern glazing dramatically changes this behaviour. Low-E coatings reflect radiant heat back into the room, while gas-filled cavities slow heat transfer through the glass. As a result, the internal surface temperature of the window rises by several degrees under the same conditions.

That increase is often enough to eliminate cold downdraughts and reduce radiant heat loss from occupants. This is why people frequently report that rooms feel “calmer” or “more even” after a glass retrofit, even before any measurable change in energy consumption is observed.

Historically, there were three main barriers.

First, older glazing technologies offered relatively modest performance improvements, making glass upgrades less compelling compared to full replacement. Second, full window replacement has traditionally been easier to package, price, and certify, even when it was not technically necessary. Third, there has been limited public understanding of how dominant a role the glazing plays in window performance.

In Ireland specifically, a large portion of the housing stock was built or upgraded during periods when energy efficiency standards were lower and heating costs were less prominent. As energy prices rose and comfort expectations changed, the limitations of that glazing became more apparent — but the industry response remained focused on replacement rather than diagnosis.

Modern glazing technology has shifted that balance. The performance gap between legacy double glazing and modern A-rated units is now large enough that upgrading the glass alone can produce meaningful, immediate improvements. Glass-only retrofits have emerged in response to that technical reality.

Absolutely— but it exists in a space that is often overlooked by formal certification systems.

From a building-physics perspective, glass-only retrofits are entirely legitimate. They address the dominant heat-loss mechanisms associated with windows and can dramatically improve real-world comfort and heating demand.

However, regulatory and rating systems often lag behind practical performance improvements. Many frameworks are designed around full component replacement rather than partial but effective upgrades. This does not invalidate the retrofit; it simply means its benefits must be understood in terms of lived comfort and energy behaviour rather than administrative labels.

Glass Retrofits vs Full Window Replacement: Cost, Value & Performance

A glass retrofit and full window replacement aim to solve the same underlying problem — poor window performance — but they approach it very differently.

Full replacement involves removing the entire window assembly, including frames, sashes, fixings, trims, and often surrounding finishes. This allows every component to be renewed, but it also introduces significant cost, disruption, and material waste. Much of that cost is tied to labour, removal, reinstatement, and compliance rather than thermal performance alone.

A glass-only retrofit, by contrast, focuses on upgrading the components that contribute most to heat loss and discomfort: the glazing and the airtightness of the opening sash. Where existing frames are structurally sound and capable of sealing properly, this approach delivers a large proportion of the achievable performance improvement without replacing elements that are still functional.

In practical terms, the difference is one of performance targeting. Full replacement renews everything regardless of condition. A glass-only retrofit renews only what has degraded. The outcome is not identical in every scenario, but in many typical Irish homes — particularly those built in the 1990s and 2000s — the performance gap between the two approaches is much smaller than the cost gap.

Full window replacement delivers the highest possible window performance because both the glazing and the frame are new. Where frames are damaged, poorly installed, or unable to seal properly, replacement is the correct solution.

However, in many Irish homes the existing frames are structurally sound and capable of good airtightness once serviced. In these cases, the main limitation is the glazing itself. Older sealed units typically lack modern Low-E coatings, gas fills, and warm-edge spacers, and upgrading them captures the largest share of the available performance improvement.

Modern A-rated glazing can reduce heat loss through the window by more than half compared to legacy double glazing, while also improving internal glass temperatures and comfort near windows. When combined with seal replacement and hinge adjustment, a glass retrofit can deliver most of the real-world comfort and efficiency gains people associate with “better windows”.

Full replacement goes further, but where frames are already fit for purpose, the additional performance gain is often small relative to the additional cost and disruption. For that reason, glass retrofits are best understood as a proportionate, cost-effective upgrade — capturing most of the performance benefit while avoiding the diminishing returns that can arise when replacing components that are still serviceable.

The cost difference arises from what is not being paid for.

Full window replacement includes:

  • Removal and disposal of existing frames

  • Manufacture and transport of entirely new window units

  • Installation labour involving structural fixing

  • Internal making-good, plaster repair, and redecorating

  • External finishing and weatherproofing

  • Longer installation time and site setup

A glass-only retrofit avoids most of these costs. The existing frames remain in place, so there is no structural removal, no disturbance to internal finishes, and no need for reinstatement work. Installation focuses on removing and replacing sealed units, restoring seals, and adjusting hardware — a much more contained operation.

From a cost perspective, this means a higher proportion of the spend goes directly into performance-enhancing components (high-spec glazing) rather than into disruption-related labour and overheads. This is why glass-only retrofits are typically 40–60% cheaper than full replacement for the same set of windows.

Full replacement is generally more appropriate when:

  • Frames are structurally damaged or rotting

  • Original installation was fundamentally poor

  • Airtightness cannot be restored through servicing

  • Aesthetic or design changes are required

  • Regulatory or planning constraints demand full compliance upgrades

A responsible glass retrofit service should identify these cases during assessment and recommend replacement where appropriate. The existence of glass-only retrofits does not negate the role of full replacement — it simply provides a better option in the many cases where replacement is unnecessary.

Most people are not seeking “new windows” as an end in themselves. They are seeking warmer rooms, fewer draughts, lower heating demand, and a more comfortable living environment.

When those outcomes can be achieved without the cost, disruption, and waste of full replacement, glass-only retrofits become an attractive and rational choice. They align investment with actual performance needs, rather than defaulting to the most invasive solution.

The Glass Retrofit System: How Modern Glass Delivers Real Performance Gains

Modern glazing used in glass retrofits is not simply “newer glass”; it is a fundamentally different thermal system compared to legacy double glazing installed in Irish homes during the 1990s and early 2000s.

Older double glazing was typically air-filled, used aluminium spacer bars, and often had no low-emissivity coating at all. Its primary function was condensation control rather than thermal optimisation. As a result, heat loss through the glass remained high, and internal glass surface temperatures in winter were often only marginally better than single glazing.

By contrast, modern A-rated glazing is engineered to control heat transfer through three mechanisms simultaneously: radiation, conduction, and convection. Low-emissivity (Low-E) coatings reduce radiant heat loss by reflecting long-wave heat back into the room. Gas-filled cavities suppress convective heat movement between panes. Warm-edge spacers reduce conductive heat loss at the perimeter of the unit.

The combined effect is a step-change in performance, not an incremental improvement. Internal glass surface temperatures rise significantly under winter conditions, which directly improves comfort and reduces the cold-window effect that dominates how rooms feel.

This is why upgrading the glass alone can transform the behaviour of an existing window when the frame is sound.

Low-E coatings are microscopically thin metallic layers applied to the glass surface. They are designed to be transparent to visible light while reflective to long-wave infrared radiation — the type of heat emitted by radiators, underfloor heating, and occupants.

In practical terms, this means heat that would normally radiate out through the window is reflected back into the room. This has two important effects. First, it reduces overall heat loss. Second — and more importantly for comfort — it raises the internal surface temperature of the glass.

A warmer internal glass surface reduces radiant heat loss from occupants sitting near windows and prevents the formation of cold downdraughts as air cools against the glass. This is why people often describe the improvement as “the room feels warmer” rather than “the heating is on less”, even before energy savings are measured.

Low-E coatings are now standard in high-performance glazing, but many existing windows simply do not have them — which is why glass retrofits can deliver such noticeable gains.

Inside a sealed unit, heat can move by convection as well as conduction. In older air-filled units, warm air circulates freely between panes, carrying heat from the inner pane to the outer pane.

Modern glazing replaces air with argon (or similar gases), which are denser and less thermally conductive. This slows convective heat movement and stabilises the temperature profile across the unit. Over time, many legacy sealed units lose their original gas fill entirely, even without visible failure, further degrading performance.

Spacer bars also play a critical role. Traditional aluminium spacers act as thermal bridges around the perimeter of the glass, creating cold edges and condensation risk. Warm-edge spacers use low-conductivity materials that raise edge temperatures, improve comfort near the window frame, and extend seal life.

Together, gas filling and spacer design ensure that the upgraded glass performs consistently across its entire area, not just at the centre.

Modern glazing delivers its full benefit only when it is supported by proper airtightness and mechanical performance. This is why a glass retrofit is treated as a system upgrade, not a component replacement.

When new glazing is installed, seals are replaced to ensure airtight closure, and hinges and locking points are adjusted so the sash compresses evenly against the frame. This ensures that the improved thermal performance of the glass is not undermined by uncontrolled air leakage.

The result is a window that behaves as an integrated system: warm internal glass surfaces, minimal air movement, stable temperatures, and improved comfort across the room. This is why glass retrofits consistently outperform simple glass replacement and why they can capture most of the real-world performance gains people expect from “better windows”.

Thermal Comfort Explained: Why Rooms Feel Warmer After a Glass Retrofit

A glass retrofit improves comfort primarily by reducing heat loss from the room to the outside, rather than by changing how much heat is produced inside.

Older glazing allows heat to pass through the window relatively easily. Even when heating is on, a continuous stream of heat is lost through the glass to the colder outdoor environment. This forces the heating system to work harder and creates unstable conditions near windows, where heat is constantly being drawn out of the space.

Modern retrofit glazing significantly reduces this heat loss. Low-emissivity coatings reflect heat back into the room instead of allowing it to escape. Gas-filled cavities slow the rate at which heat moves through the glass, and warm-edge spacers reduce heat loss around the perimeter of the unit. Together, these features increase the thermal resistance of the window and slow the rate at which indoor heat is lost outdoors.

When less heat escapes, the room reaches a stable temperature more easily and maintains it for longer. Heating output is no longer being immediately lost through the window, so warmth spreads more evenly throughout the space instead of dissipating at the perimeter.

This is why rooms feel warmer and more consistent after a glass retrofit. The improvement comes from keeping heat inside the building envelope, not from increasing heat production. The window becomes a far weaker pathway for heat loss, allowing the heating system to work more efficiently and the room to behave more predictably in cold conditions.

Cold spots near windows are caused by localised heat loss, not by a lack of heating output. Older glazing allows heat to escape rapidly at the window perimeter, creating zones where the room loses warmth faster than it can be replenished.

Modern retrofit glazing reduces this local heat loss dramatically. By increasing the thermal resistance of the glass and improving edge performance with warm-edge spacers, the window becomes far less effective at drawing heat out of the room. As a result, temperatures near the window stabilise and align more closely with the rest of the space.

This is why areas that were previously uncomfortable — seating near windows, desks, beds — become usable again after a glass retrofit.

Heating systems distribute warmth into a room, but the final temperature pattern depends on where heat is lost. When windows are a dominant heat-loss pathway, heat is constantly pulled toward them and lost outside, creating uneven temperature gradients across the space.

By reducing heat loss through the glass, a retrofit removes this dominant sink. Heat supplied by radiators or underfloor systems remains in the room for longer and spreads more uniformly before escaping. This leads to a more even temperature profile, with fewer hot and cold zones.

The room behaves more like a single thermal space rather than a collection of competing microclimates.

Many draught sensations are not caused by air leakage but by convective air movement driven by cold surfaces. When air cools against a cold window, it becomes denser and sinks, setting up slow but continuous air currents within the room.

Modern glazing raises the internal surface temperature of the glass, reducing the cooling of adjacent air. This suppresses convective movement near the window and eliminates the sensation of a draught, even when the window was technically airtight beforehand.

This is why people often report draught reduction after a glass retrofit even when no obvious air leaks were present.

Heat retention is a function of how quickly energy escapes from the building envelope. Older glazing provides a relatively direct pathway for heat to leave the room, particularly during cold external conditions.

By upgrading the glass, that pathway becomes far more resistant. Heat loss slows, meaning the room cools more gradually when heating cycles off. This stabilises indoor temperatures and reduces the frequency with which heating systems need to activate.

The effect is especially noticeable overnight and in intermittently heated rooms, which maintain comfort for longer periods after a glass retrofit.

Comfort responds immediately to reduced heat loss and improved surface temperatures. Energy savings, by contrast, accumulate gradually and are influenced by weather, usage patterns, and heating behaviour.

This is why people often experience a glass retrofit first as a comfort upgrade rather than an immediate reduction in energy bills. Over time, as heating demand decreases and temperature stability improves, energy savings tend to follow.

Comfort is therefore the earliest and most reliable indicator that the retrofit is working as intended.

Outdated Double Glazing: Why Performance Degrades Even When Windows Look Fine

Double glazing is not a static system. Its thermal performance depends on the integrity of several components — the glass coatings, the gas fill, the edge seals, and the spacer system. Over time, these elements can degrade even when the window appears visually intact.

Older sealed units were often manufactured with basic air-filled cavities, aluminium spacer bars, and early or absent Low-E coatings. While these units may still be sealed against rain and wind, their ability to resist heat loss is significantly lower than modern standards. As materials age, microscopic seal degradation can also allow gas to escape slowly, reducing insulation performance without causing visible condensation or misting.

The result is a window that still “looks fine” but behaves very differently thermally, allowing heat to pass through far more easily than expected.

During that period, building regulations and energy expectations were very different. Double glazing was often specified as a minimum requirement rather than a performance-optimised system.

Common characteristics of glazing from that era include:

  • No Low-E coating or early-generation coatings

  • Air-filled cavities instead of gas fills

  • Aluminium spacer bars with high thermal conductivity

  • Limited focus on airtightness and compression

At the time, these systems represented an improvement over single glazing. However, compared to modern A-rated glazing, their thermal resistance is dramatically lower.

As energy costs have risen and comfort expectations have increased, the limitations of that glazing have become far more apparent.

Heat moves from warm to cold through radiation, conduction, and convection. Older glazing performs poorly across all three mechanisms.

Without effective Low-E coatings, radiant heat passes through the glass easily. Without gas fills, convective heat transfer inside the cavity is high. Aluminium spacers conduct heat rapidly at the perimeter, creating cold edges and increasing overall heat loss.

Combined, these factors make older double glazing a weak point in the building envelope, even if the rest of the structure is well insulated.

Increasing heating output raises air temperature, but it does not fix the underlying heat-loss pathway. As long as heat continues to escape rapidly through the glazing, the system remains unbalanced.

The heating system works harder, rooms fluctuate in temperature, and comfort near windows remains poor. This is why many homeowners feel they are “heating the outside” during winter.

Reducing heat loss at the window — rather than increasing heat input — is the more effective solution.

When glazing performance drops, heat loss becomes highly localised at the window opening. This creates cold zones, uneven temperatures, and discomfort near windows long before overall room temperatures appear problematic.

This is why people often describe the issue as “cold coming from the windows” rather than a general lack of heating.

A glass retrofit replaces outdated sealed units with modern glazing designed to resist heat loss across all mechanisms. Low-E coatings reflect heat back into the room, gas fills slow internal heat movement, and warm-edge spacers reduce perimeter losses.

By restoring the window’s thermal performance, the retrofit removes one of the most significant heat-loss pathways in the building envelope. This allows the room to behave more predictably, hold heat longer, and feel consistently comfortable.

This is why glass retrofits are particularly effective in homes where windows appear intact but comfort is poor — they address a problem that is real, widespread, and often invisible.

Outdated glazing is a performance problem, not a structural one. In most cases, the frame remains sound, but the sealed unit no longer does its job effectively.

Glass retrofits are designed precisely for this scenario: replacing the weakest thermal component while retaining what still works. This makes them especially effective for addressing widespread, invisible performance loss across large portions of the housing stock.

Why Glass Retrofits Are Particularly Relevant to Irish Homes and Buildings

A large proportion of Irish homes were built or upgraded during periods when glazing standards were significantly lower than today. In particular, housing constructed or refurbished from the mid-1990s through the early 2000s often features double glazing that was acceptable at the time but performs poorly by modern standards.

In many of these buildings, the window frames themselves remain structurally sound. uPVC, aluminium, and timber frames from this era were generally robust and well installed, but the glazing units typically lack modern Low-E coatings, gas fills, and warm-edge spacers. As a result, the frames outlast the thermal performance of the glass.

Glass retrofits are well suited to this scenario because they target the weakest part of the window system — the glazing — while retaining frames that are still fit for purpose. This allows performance to be restored without unnecessary replacement or disruption.

During the main housing expansion in Ireland, glazing was often specified to meet minimum requirements rather than long-term performance targets. Energy costs were lower, comfort expectations were different, and the industry focus was on speed and volume rather than optimisation.

As a result, many homes were fitted with basic double glazing that offered limited thermal resistance even when new. Over time, those limitations have become more apparent as heating costs increased and expectations around comfort rose.

The issue is not that these windows have “failed” in a traditional sense, but that they were never designed to perform to today’s standards. Glass retrofits address this legacy gap directly by upgrading the glass to modern performance levels without rewriting the entire window installation.

In Irish homes, the problem is often persistent, low-level heat loss rather than dramatic draughts or visible defects. Long heating seasons combined with moderate external temperatures mean that heat loss through windows is continuous rather than episodic.

Older glazing allows this steady heat loss to occur day and night during winter months. Over time, this creates cold zones near windows and makes rooms harder to stabilise, even when the heating system is functioning correctly.

Upgrading the glass reduces this continuous heat drain. Rooms retain warmth more effectively, temperature differences even out, and comfort improves without requiring higher heating output.

Most Irish homes are upgraded incrementally rather than all at once. Insulation, heating systems, draught reduction, and ventilation are often improved in stages over time.

Glass retrofits fit naturally into this pattern. They allow windows to be upgraded as part of a broader comfort and efficiency strategy without forcing a major renovation event. This makes them particularly suitable for owner-occupied homes where disruption, cost control, and timing matter.

As awareness grows around energy efficiency, comfort, and the true cost of full replacement, more homeowners and building owners are questioning whether replacing entire windows is always necessary.

Glass retrofits respond directly to this shift. They offer a technically sound way to address widespread underperforming glazing in Irish buildings, using a proportionate approach that aligns performance gains with cost and disruption.

For many properties, this makes glass retrofits not just an alternative, but the most logical first step.

Suitability & Assessment: When a Glass Retrofit Is — and Is Not — the Right Solution

A glass retrofit is suitable when the existing window frames are structurally sound and capable of achieving good airtightness once serviced. This applies to many uPVC, aluminium, and timber frames installed over the past 20–30 years.

Suitability is determined by assessing frame condition, sash alignment, seal integrity, and overall window operation. Cosmetic ageing alone does not rule a window out — what matters is whether the frame can securely support modern sealed units and close correctly against seals.

If the frame is stable, square, and free from structural damage, a glass retrofit is usually a viable option.

A glass retrofit may not be appropriate if the frame is:

  • Structurally warped or twisted

  • Severely degraded (e.g. advanced timber rot)

  • Poorly installed or inadequately fixed

  • Unable to achieve airtight closure even after adjustment

In these cases, upgrading the glass would not deliver its full benefit because the surrounding system cannot support proper performance. Where this applies, full window replacement is the correct recommendation.

Identifying these situations early is a key part of a responsible assessment.

An assessment focuses on how the window performs, not how it looks.

It typically includes:

  • Measuring existing glazing units

  • Checking frame condition and fixings

  • Inspecting seals and gasket performance

  • Assessing hinge alignment and closing compression

  • Identifying sources of heat loss or air leakage

The aim is to determine whether upgrading the glass and restoring airtightness will deliver a meaningful improvement, or whether replacement would be more appropriate.

Yes. A glass retrofit is not presented as a universal solution.

Where frames are beyond serviceable condition, or where performance cannot be restored reliably, full replacement is the correct course of action. Recommending otherwise would undermine long-term performance.

A credible glass retrofit service is defined as much by when it says no as when it says yes.

Service Area – Common Questions

Our glass retrofit service is primarily focused on South Dublin and Wicklow, where the majority of our assessment and installation work is carried out. These areas contain a high proportion of homes and buildings with older double glazing and sound existing frames, making them particularly well suited to glass-only retrofits.

By concentrating on South Dublin and Wicklow, we are able to offer efficient scheduling, consistent workmanship, and a service designed for occupied residential and commercial properties with minimal disruption.

In Wicklow, we cover Bray, Greystones, Delgany, Kilcoole, Wicklow Town, Ashford, Newtownmountkennedy, Roundwood, and Arklow, along with surrounding towns and commuter areas throughout the county.

This includes coastal, town, and rural properties. Wicklow forms a core part of our service area, with a large prportion of our work carried out across the county.

In Dublin, our service is focused on South Dublin and South Dublin City, including Dún Laoghaire–Rathdown, South Dublin County, and nearby surrounding suburbs.

This includes areas such as Dún Laoghaire, Blackrock, Stillorgan, Sandyford, Dundrum, Rathfarnham, Terenure, Churchtown, and adjacent areas, where housing stock and building types are particularly well suited to glass retrofits.

Our primary service area is South Dublin and Wicklow. In some cases, we may consider projects slightly outside these areas where the property type, scope of work, and logistics align with our service model. These are assessed individually rather than offered as standard coverage.

There are no additional call-out or assessment charges for properties located within our core service area of South Dublin and Wicklow. Pricing is based on the scope of work and window requirements, not on distance within these areas.

Focusing on a defined geographic area allows us to maintain a high standard of service, with reliable response times, consistent installation quality, and proper aftercare. It also reflects where glass retrofits are most relevant, particularly in homes and buildings with older glazing that can benefit significantly from targeted upgrades rather than full replacement.

If your property is near the boundary of South Dublin or Wicklow, or you are unsure whether it falls within our service area, a short enquiry will confirm suitability quickly before any further steps.

Request a Glass Retrofit Assessment

If you’re considering a glass-only upgrade or want to understand whether your existing windows are suitable, complete the form and our team will review your details. We’ll confirm suitability, answer any questions, and outline the next steps — with no obligation.

Tell us any details you think are helpful — number of windows, room type, or what you’re noticing. After we contact you, you’ll be able to send photos for a faster assessment.