11 Ways To Completely Redesign Your Secondary Glazing Acrylic Options

· 5 min read
11 Ways To Completely Redesign Your Secondary Glazing Acrylic Options

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

In an age where energy expenses are increasing and environmental sustainability is a primary issue for house owners, the look for reliable insulation solutions has intensified. While double glazing is typically promoted as the gold requirement for window insulation, it is not constantly a practical option due to high expenses, structural constraints, or the restrictive guidelines surrounding heritage and noted buildings. This is where secondary glazing works as a versatile and cost-effective alternative.

Specifically, acrylic secondary glazing has emerged as a frontrunner for those seeking a balance in between efficiency, cost, and ease of setup. This post explores the numerous acrylic alternatives offered, the advantages of picking this product, and how it compares to other glazing alternatives.


What is Acrylic Secondary Glazing?

Secondary glazing involves the installation of an extra pane of glass or plastic inside an existing window frame. Unlike full window replacement, this approach preserves the original outside window while creating an insulating layer of air between the 2 panes.

Acrylic, clinically understood as PolyMethyl Methacrylate (PMMA), is a transparent thermoplastic often utilized as a light-weight and shatter-resistant option to glass. It is regularly marketed under brand such as Perspex or Plexiglass. Due to the fact that it is highly adaptable and offers excellent clearness, it has actually ended up being the favored material for DIY secondary glazing projects and professional retrofitting alike.

The Different Types of Acrylic Sheets for Glazing

When selecting acrylic for secondary glazing, it is necessary to comprehend that not all sheets are manufactured similarly. The choice of material impacts the window's longevity, clearness, and insulation residential or commercial properties.

  1. Extruded Acrylic: This is the most economical option. It is manufactured by pressing the plastic through a type. It has a lower melting point and is easier to laser-cut, making it ideal for standard domestic window sizes.
  2. Cast Acrylic: Known for its superior quality, cast acrylic is made by putting liquid active ingredients into a mold. It uses much better thermal stability and is less likely to scratch or warp over time compared to extruded versions.
  3. UV-Resistant Acrylic: Standard acrylic currently uses some UV defense, but specialized UV-resistant sheets are created to block up to 99% of harmful rays, preventing the fading of interior carpets, furniture, and artwork.
  4. Abrasion-Resistant Acrylic: This type includes a hard-coated surface that safeguards the sheet from scratches and chemical damage, guaranteeing the glazing remains clear even after years of cleansing.

Comparing Glazing Materials

To understand why acrylic is a favorable option, it is practical to compare it versus other typical products utilized in secondary glazing, such as polycarbonate and traditional glass.

FunctionAcrylic (PMMA)PolycarbonateRequirement Glass
OpennessOutstanding (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

Secret Benefits of Acrylic Secondary Glazing

The shift towards acrylic secondary glazing is driven by several functional advantages. For lots of house owners, the choice is based upon 3 main aspects: thermal performance, acoustic insulation, and expense.

1. Thermal Efficiency and Heat Retention

Acrylic is a naturally insulating product. When installed as secondary glazing, it develops a stationary air pocket that acts as a thermal barrier. This lowers "U-values" (the rate of heat transfer), meaning the home remains warmer in the winter season and cooler in the summer. This reduced reliance on heating and cooling systems causes considerable reductions in annual energy bills.

2. Acoustic Insulation (Noise Reduction)

For locals living near hectic roads, airports, or railway, sound contamination is a considerable issue. Acrylic is frequently denser than thin glass panes found in older windows. When a space of approximately 100mm to 150mm is maintained between the primary window and the acrylic sheet, the system can minimize external noise levels by approximately 80%.

3. Security and Durability

Acrylic is practically unbreakable. Unlike glass, which can break into dangerous shards upon impact, acrylic is highly resistant to force. This makes it a perfect choice for households with children or family pets. Additionally, its lightweight nature puts less stress on existing window frames and makes the installation process much safer for a single individual to handle.

4. Aesthetic appeals and Preservation

One of the best benefits for owners of historical or listed residential or commercial properties is that acrylic secondary glazing is "discreet and reversible." It does not change the external look of the structure, pleasing most local planning authorities. The high openness of acrylic ensures that the view stays unblocked.


Setup Methods for Acrylic Glazing

One factor acrylic is so popular is the variety of setup methods offered, varying from short-term seasonal fixes to long-term fixtures.

  • Magnetic Strip Systems: This is the most common DIY approach. Magnetic tape is used to the window frame and the edge of the acrylic sheet. This permits the pane to be easily removed for cleansing or throughout the summer season when ventilation is needed.
  • Plastic Clips and Turnbuttons: Small clips are screwed into the window surround to hold the acrylic sheet strongly in place. This is a safe method that still permits seasonal removal.
  • Screw-in Frames: For a more irreversible solution, acrylic sheets can be mounted within a slim aluminum or PVC frame that is then screwed into the window reveal.
  • Adhesive Tape: While the least expensive alternative, utilizing high-bond double-sided tape is generally discouraged for long-term usage as it makes removing the sheet for window upkeep difficult.

Upkeep and Care

To guarantee the longevity of acrylic secondary glazing, appropriate upkeep is vital. Acrylic is softer than glass and can be scratched if treated incorrectly.

  • Cleansing Agents: Never use window cleaners including ammonia or alcohol (like Windex), as these can "trend" (create tiny fractures) or cloud the surface of the acrylic. Instead, use lukewarm water with a moderate meal soap.
  • Cloth Selection: Only use soft microfiber fabrics. Paper towels or abrasive sponges can leave great scratches that dull the openness over time.
  • Static Management: Acrylic can bring in dust due to fixed electrical energy. Using  secondary double glazing near bow -static cleaner specifically developed for plastics can assist keep the sheets cleaner for longer.

Often Asked Questions (FAQ)

Q: Does acrylic secondary glazing cause condensation?A: Secondary glazing is really developed to decrease condensation on the main window by keeping the inner surface warmer. Nevertheless, if the seal isn't perfect, some wetness might get trapped. Including a small sachet of desiccant or making sure the room is well-ventilated can alleviate this.

Q: Is acrylic or polycarbonate much better for windows?A: For secondary glazing, acrylic is usually much better since it is more UV-resistant and provides higher clarity. Polycarbonate is stronger but is more vulnerable to scratching and can yellow over time if not treated with costly finishings.

Q: What thickness of acrylic should I use?A: For many property windows, a thickness of 3mm or 4mm suffices. For huge windows or where optimal soundproofing is needed, 5mm or 6mm might be better.

Q: Can I install this on listed buildings?A: Generally, yes. Due to the fact that secondary glazing is an internal addition and does not alter the material of the structure's outside, it is normally permitted. However, it is constantly advised to examine with your local preparation workplace first.

Q: How much cash can I minimize energy costs?A: While results differ based on the residential or commercial property, property owners can normally expect to see a 10% to 15% decrease in heat loss through windows, which correlates considerably to lower heating costs.


Acrylic secondary glazing represents a high-performance, available, and aesthetically pleasing option for contemporary home insulation requirements. By using the clearness of glass with the resilience and thermal properties of modern polymers, it permits property owners to upgrade their living environment without the expenditure or intrusion of full window replacements. Whether the objective is to lower energy expenses, shut out street noise, or secure a heritage residential or commercial property, acrylic alternatives supply a versatile course towards a more comfy and efficient home.