Where Will Secondary Glazing Acrylic Options One Year From This Year?

· 5 min read
Where Will Secondary Glazing Acrylic Options One Year From This Year?

Improving Home Efficiency: A Comprehensive Guide to Secondary Glazing Acrylic Options

In a period where energy costs are increasing and ecological sustainability is a primary issue for property owners, the look for effective insulation options has intensified. While double glazing is often touted as the gold standard for window insulation, it is not always a feasible option due to high costs, structural constraints, or the limiting guidelines surrounding heritage and noted structures. This is where secondary glazing acts as a flexible and cost-effective alternative.

Specifically, acrylic secondary glazing has emerged as a frontrunner for those looking for a balance between performance, cost, and ease of setup. This post explores the different acrylic alternatives readily available, the benefits of picking this material, and how it compares to other glazing alternatives.


What is Acrylic Secondary Glazing?

Secondary glazing includes the installation of an additional pane of glass or plastic inside an existing window frame. Unlike full window replacement, this technique maintains the initial outside window while developing an insulating layer of air in between the 2 panes.

Acrylic, clinically referred to as PolyMethyl Methacrylate (PMMA), is a transparent thermoplastic typically utilized as a light-weight and shatter-resistant option to glass. It is frequently marketed under trademark name such as Perspex or Plexiglass.  secondary glazing fitters walthamstow  to the fact that it is highly adaptable and provides outstanding clearness, it has become the favored product for DIY secondary glazing jobs and professional retrofitting alike.

The Different Types of Acrylic Sheets for Glazing

When selecting acrylic for secondary glazing, it is very important to comprehend that not all sheets are made similarly. The choice of product effects the window's durability, clarity, and insulation residential or commercial properties.

  1. Extruded Acrylic: This is the most economical option. It is produced by pressing the plastic through a type. It has a lower melting point and is easier to laser-cut, making it perfect for standard domestic window sizes.
  2. Cast Acrylic: Known for its exceptional quality, cast acrylic is made by pouring liquid ingredients into a mold. It provides much better thermal stability and is less most likely to scratch or warp with time compared to extruded versions.
  3. UV-Resistant Acrylic: Standard acrylic already offers some UV protection, but specialized UV-resistant sheets are designed to block up to 99% of harmful rays, preventing the fading of interior carpets, furnishings, and art work.
  4. Abrasion-Resistant Acrylic: This type features a hard-coated surface area that secures the sheet from scratches and chemical damage, guaranteeing the glazing remains clear even after years of cleaning.

Comparing Glazing Materials

To understand why acrylic is a beneficial choice, it is useful to compare it versus other common products utilized in secondary glazing, such as polycarbonate and conventional glass.

FeatureAcrylic (PMMA)PolycarbonateStandard Glass
OpennessExceptional (92%)Good (88%)Excellent (90%)
Weight50% lighter than glass50% lighter than glassHeavy
Impact Resistance10x stronger than glass250x stronger than glassLow/ Fragile
Thermal InsulationHighHighModerate
CostEconomicalPremiumHigh (for retrofitting)
Scratch ResistanceModerateLowHigh
Ease of DIYHighHighLow

Key Benefits of Acrylic Secondary Glazing

The shift toward acrylic secondary glazing is driven by a number of functional advantages. For many homeowners, the decision is based upon three main elements: thermal performance, acoustic insulation, and expense.

1. Thermal Efficiency and Heat Retention

Acrylic is a naturally insulating product. When set up as secondary glazing, it produces a fixed air pocket that functions as a thermal barrier. This decreases "U-values" (the rate of heat transfer), implying the home stays warmer in the winter season and cooler in the summer season. This reduced dependence on heating and cooling systems leads to considerable reductions in yearly energy bills.

2. Acoustic Insulation (Noise Reduction)

For citizens living near busy roadways, airports, or railway, sound contamination is a significant concern. Acrylic is frequently denser than thin glass panes found in older windows. When a space of around 100mm to 150mm is maintained in between the primary window and the acrylic sheet, the system can reduce external noise levels by approximately 80%.

3. Security and Durability

Acrylic is essentially unbreakable. Unlike glass, which can get into hazardous shards upon impact, acrylic is highly resistant to force. This makes it a perfect option for homes with kids or animals. Furthermore, its light-weight nature puts less tension on existing window frames and makes the installation process much more secure for a single person to deal with.

4. Looks and Preservation

One of the biggest advantages for owners of historic or noted residential or commercial properties is that acrylic secondary glazing is "discreet and reversible." It does not change the external look of the structure, satisfying most regional preparation authorities. The high transparency of acrylic guarantees that the view remains unobstructed.


Setup Methods for Acrylic Glazing

One factor acrylic is so popular is the range of installation methods readily available, ranging from temporary seasonal repairs to irreversible fixtures.

  • Magnetic Strip Systems: This is the most common DIY approach. Magnetic tape is applied to the window frame and the edge of the acrylic sheet. This allows the pane to be easily removed for cleansing or during the summer season when ventilation is required.
  • Plastic Clips and Turnbuttons: Small clips are screwed into the window surround to hold the acrylic sheet securely in place. This is a safe and secure approach that still permits seasonal elimination.
  • Screw-in Frames: For a more long-term option, acrylic sheets can be installed within a slim aluminum or PVC frame that is then screwed into the window expose.
  • Adhesive Tape: While the most affordable alternative, utilizing high-bond double-sided tape is normally discouraged for long-lasting usage as it makes eliminating the sheet for window upkeep hard.

Upkeep and Care

To ensure the durability of acrylic secondary glazing, appropriate upkeep is essential. Acrylic is softer than glass and can be scratched if dealt with improperly.

  • Cleansing Agents: Never utilize window cleaners consisting of ammonia or alcohol (like Windex), as these can "fad" (create small fractures) or cloud the surface of the acrylic. Instead, utilize lukewarm water with a moderate dish soap.
  • Fabric Selection: Only use soft microfiber cloths. Paper towels or abrasive sponges can leave great scratches that dull the transparency in time.
  • Static Management: Acrylic can draw in dust due to static electrical power. Utilizing an anti-static cleaner specifically developed for plastics can assist keep the sheets cleaner for longer.

Frequently Asked Questions (FAQ)

Q: Does acrylic secondary glazing cause condensation?A: Secondary glazing is in fact developed to lower condensation on the primary window by keeping the inner surface warmer. However, if the seal isn't ideal, some moisture might get trapped. Consisting of a small sachet of desiccant or ensuring the room is well-ventilated can alleviate this.

Q: Is acrylic or polycarbonate better for windows?A: For secondary glazing, acrylic is typically much better because it is more UV-resistant and offers higher clarity. Polycarbonate is more powerful however is more susceptible to scratching and can yellow with time if not treated with expensive finishes.

Q: What density of acrylic should I use?A: For most residential windows, a density of 3mm or 4mm is sufficient. For huge windows or where maximum soundproofing is required, 5mm or 6mm might be better suited.

Q: Can I install this on listed structures?A: Generally, yes. Since secondary glazing is an internal addition and does not alter the fabric of the building's outside, it is generally allowed. However, it is constantly advised to consult your local planning office first.

Q: How much cash can I minimize energy expenses?A: While outcomes vary based upon the property, property owners can usually anticipate to see a 10% to 15% decrease in heat loss through windows, which correlates considerably to lower heating expenses.


Acrylic secondary glazing represents a high-performance, available, and visually pleasing option for modern-day home insulation needs. By offering the clearness of glass with the sturdiness and thermal properties of modern polymers, it allows house owners to upgrade their living environment without the expenditure or invasion of full window replacements. Whether the objective is to reduce energy expenses, shut out street noise, or protect a heritage home, acrylic choices offer a versatile course toward a more comfortable and effective home.