Best shims in 2026

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Finding the right shims is crucial for professional-looking DIY results, whether you are installing windows, leveling furniture, or fixing door frames. This curated list of the top 10 shims available in the UK market focuses on durability, precision, and value. We have evaluated options ranging from plastic glazing packers to heavy-duty wooden wedges, ensuring you find the perfect spacer for your specific home improvement project without wasting money on inferior materials.
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10
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5-16€
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Best Overall
Evoges 28mm x 100mm Flat Plastic Glazing Packers (1-6mm) Durable Shim Spacers for DIY, Home Improvement, Window, and Door Frame Installations (Mixed Pack of 42)

Evoges 28mm x 100mm Flat Plastic Glazing Packers (...

6.99GBP
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Best Choice
EVOGES - Evoges 28mm x 100mm Flat Plastic Glazing Packers (1-6mm) Durable Shim Spacers for DIY, Home Improvement, Window, and Door Frame Installations (Mixed Pack of 42)
#1
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40/100 Prime

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  • Versatile Thickness Options: Includes 42/90/200/1,000 glazing packers in a range of thicknesses from 1mm to 6mm, providing flexibility for precise leveling and alignment in various projects.
  • Durable Plastic Construction: Made from high-quality, robust plastic for long-lasting use in both indoor and outdoor installations, ensuring strength and reliability.
£6.99
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Broadfix - 200 MIXED Plastic Small U Shims/Packers/Pails/Horseshoe/Wedge - 55 x 43mm -//////35 of each 1mm/2mm/3mm/4mm/5mm and 25 of 6mm///////
#4
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  • For Easy Levelling, Packing, Spacing, and Shimming Dry Lining: Ensures smooth, level wall surfaces. Fitting Skirting and Architraves: Achieves precise fit and alignment. Fitting Kitchen and Bathroom Cabinetry: Provides level base for cabinets. Floor Levelling: Creates an even surface for flooring or tiling. Window and Door Installations: Ensures accurate spacing and alignment. Furniture Assembly: Maintains even spacing for a clean finish. Building and Renovation Projects: Versatile tool for various construction tasks. Plus Many More…: Ideal for any project requiring levelling, packing, or spacing.
£18.99
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Lumivra - 100pcs U Shaped Plastic Packers – Assorted Shims in 6 Sizes (1mm to 6mm) for Window and Door Installation, Flooring, Joinery, Furniture Leveling – Durable Plastic Wedges for Builders & DIY Projects
#5
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  • 100pcs Multi-Size U Shims – Includes 100 plastic packers in six thicknesses (1mm to 6mm), allowing precise spacing, leveling, and alignment in construction, installation, and renovation projects.
  • Durable & Pressure-Resistant – Made from reinforced plastic that withstands heavy loads without cracking or warping. Designed for long-lasting performance in a wide range of applications.
£5.89
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Eleechen - 72 Pcs Plastic Glazing Packers, 28mm x 100mm Colourful Spacers Window Packers, Assorted Flat Shim Spacers for DIY, Window/Door/Floor Installations (Mixed 1-6mm)
#7
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  • 【DIY DOOR & WINDOW FLAT PACKERS】Our plastic packers are ideal for levelling windows and doors and ensuring floor alignment. These flat packers provide precision and stability to your workspace, perfect for gifting to yourself or someone in need.
  • 【REUSABLE】Our plastic flat spacers are mainly made of high quality PP material, waterproof, strong and firm, not easy to wear, deform, break or fade, can be used for a long time and repeatedly. Stable function in any weather conditions.
€5.99
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Ouligay - Ouligay 16Pcs Furniture Plastic Wedges & Shims for Leveling - Easy to Snap Cut for Chair, Doors, Toilet
#8
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  • Durable Materials: plastic wedges are made of plastic material, safe, reliable, tasteless, can be applied with confidence; Perfect for professional and personal use, leveling, repairs and furniture renovation projects.
  • Never Rot Shims: The material of shim levelers are water-proof and durable. Unlike wood shims, plastic shims will not rot, warp, swell, or split, holding up to rain, show and other tough or extreme outdoor conditions.
£6.19
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HuangXinyu - 72 Pcs Plastic Packers and Shims, Flat Plastic Glazing Packers, Plastic Shims and Packers for Door and Window Glazing Glass Packers, Window and Door Spacers(100 mm x 28 mm x 1/2/3/4/5/6 mm)
#9
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  • Exquisite Materials: For packers and shims are made of high-quality PP material, well-made, thick edges, no burrs, scratch-resistant, corrosion-resistant, high load-bearing capacity, reusable, durable and stable
  • Slim Groove & Easy Identification: Plastic packers adopt a thin groove design, strong anti-slip, high stability, strong load-bearing capacity, ensure a firm fixation and prevent unnecessary sliding; each packer is marked with size labeling on the back, you can easily identify the thickness and improve work efficiency
£5.99
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Our Expert Verdict: shims

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This list highlights the most reliable shims for UK homeowners. Plastic mixed packs offer the best value for general use, while wooden options suit structural needs. Choose based on your specific gap size and material requirements.

Market Overview: shims

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The UK shim market is dominated by affordable plastic multi-packs for general DIY, with a steady demand for specialized wooden wedges in construction. Trends show a preference for mixed-size kits that offer flexibility for various gap sizes.

Buying Guide: shims

AI
When buying shims, prioritize material durability and thickness variety. Plastic offers moisture resistance and easy cutting, while wood provides superior grip. Ensure the pack includes multiple sizes for precise leveling adjustments in windows, doors, or furniture.

Selection Criteria

Products were selected based on customer ratings, material durability, value for money, and versatility for common UK DIY tasks like window installation and furniture leveling.

Budget Advice

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Entry-level plastic packs are very affordable, often under £10 for large quantities. Mid-range options offer better material quality or specialized shapes. Premium heavy-duty or specific wooden shims may cost slightly more but provide superior longevity.

Conclusion: shims

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Selecting the correct shim ensures stability and prevents rattles in your home installations. Review our detailed comparisons to find the best fit for your needs. Click through to read the full reviews and secure the highest-rated shims for your upcoming DIY tasks today.

Frequently Asked Questions

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Plastic shims are generally more durable, resistant to moisture, and easier to snap to size. Wooden shims offer higher friction and are better for heavy structural loads but can rot or warp if exposed to dampness over time.
Shims come in various thicknesses, typically from 1mm to 6mm. Choose thinner shims for fine adjustments and thicker ones for larger gaps. Many kits include assorted sizes to allow for gradual leveling adjustments.
Yes, most plastic glazing packers and wedges are designed to be easily cut or snapped with standard scissors or a utility knife, allowing you to customize the length for tight or irregular gaps.

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Why Trust This List?

Data-Driven Selection

Analysis of 0 verified customer reviews

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Last updated 3 тижні тому

Independent Analysis

Objective criteria: rating, price, popularity

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Evoges 28mm x 100mm Flat Plastic Glazing Packers (1-6mm) Durable Shim Spacers for DIY, Home Improvement, Window, and Door Frame Installations (Mixed Pack of 42)
🥇 #1

Evoges 28mm x 100mm Flat Plastic Glazing...

6.99 GBP
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