Best Polystyrene Insulation of 2025

Last updated on 19/10/2025

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Triplast Expanded Polystyrene Foam Sheets EPS 70 (12 Sheets, 1200 x 600 x 25mm Each) - BBA Certified Wall & Floor Insulation Board - Box Lining & Packaging Foam Board - White Blocks for DIY Projects

Triplast Expanded Polystyrene Foam Sheets EPS 70 (12 Sheets, 1200 x 600 x 25mm Each) - BBA Certified Wall & Floor Insulation Board - Box Lining & Packaging Foam Board - White Blocks for DIY Projects

Triplast

Why we love it

Energy-efficient and eco-friendly.
Shock-proof and lightweight.
Non-toxic and versatile.

Main Highlights

CONTENTS: 12 x Polystyrene Sheets | SIZE: Each square-edged sheet measures 1200mm (Length) x 600mm (Width) x 25mm (Height) | TYPE: EPS 70 | THERMAL CONDUCTIVITY: Low (0.038 - 0.030 W/mK) | BBA CERTIFIED for BS EN 13163:2012 | MADE in UK
USE #1 - INSULATION BOARD: Energy-efficient, damp-proof & odourless insulation foam for thermal insulation. Use for wall & floor insulation, shed insulation or as polystyrene ceiling tiles - these are BBA certified construction boards!
USE #2 - PROTECTIVE PACKAGING: Shock-proof, impact-resistant & lightweight packing foam sheet for cushioning fragile items, box lining or interleaving flat items (e.g. glass panels) - prevent damage & keep items in place during shipping & storage!
USE #3 - ARTS & CRAFT: Non-toxic & non-irritant, these white polystyrene sheet are perfect for 3D model making, sculpting, floral arrangements, diorama, DIY hobby & school projects - cut, carve, sand, glue & paint this foam block with ease!
AN ECO-CONSCIOUS CHOICE: Made with no HCF's, CFC's or HCFC's, these EPS foam sheets have a zero Global Warming Potential (GWP) & low O-Zone Depletion Potential (ODP) - go sustainable with our BRE Green Guide A+ Rating certified expanded foam boards!

9.7

Exceptional

9.7

Exceptional

Triplast

Triplast Expanded Polystyrene Foam Sheets EPS 70 (12 Sheets, 1200 x 600 x 25mm Each) - BBA Certified Wall & Floor Insulation Board - Box Lining & Packaging Foam Board - White Blocks for DIY Projects

Why we love it

Energy-efficient and eco-friendly.
Shock-proof and lightweight.
Non-toxic and versatile.

Main Highlights

CONTENTS: 12 x Polystyrene Sheets | SIZE: Each square-edged sheet measures 1200mm (Length) x 600mm (Width) x 25mm (Height) | TYPE: EPS 70 | THERMAL CONDUCTIVITY: Low (0.038 - 0.030 W/mK) | BBA CERTIFIED for BS EN 13163:2012 | MADE in UK
USE #1 - INSULATION BOARD: Energy-efficient, damp-proof & odourless insulation foam for thermal insulation. Use for wall & floor insulation, shed insulation or as polystyrene ceiling tiles - these are BBA certified construction boards!
USE #2 - PROTECTIVE PACKAGING: Shock-proof, impact-resistant & lightweight packing foam sheet for cushioning fragile items, box lining or interleaving flat items (e.g. glass panels) - prevent damage & keep items in place during shipping & storage!
USE #3 - ARTS & CRAFT: Non-toxic & non-irritant, these white polystyrene sheet are perfect for 3D model making, sculpting, floral arrangements, diorama, DIY hobby & school projects - cut, carve, sand, glue & paint this foam block with ease!
AN ECO-CONSCIOUS CHOICE: Made with no HCF's, CFC's or HCFC's, these EPS foam sheets have a zero Global Warming Potential (GWP) & low O-Zone Depletion Potential (ODP) - go sustainable with our BRE Green Guide A+ Rating certified expanded foam boards!

Value for Money

Protective White Rigid EPS70 SDN Expanded Polystyrene (EPS) Insulation Void Fill Protective Foam Sheets (20 Sheets, 1000 x 500 x 25mm)

Protective White Rigid EPS70 SDN Expanded Polystyrene (EPS) Insulation Void Fill Protective Foam Sheets (20 Sheets, 1000 x 500 x 25mm)

Pluto Packaging

Why we love it

Versatile foam sheet size options.
Excellent insulation and humidity resistance.
Easy to cut, no mess.

Main Highlights

Size/Dimensions: 600 x 400 x 10mm, 600 x 400 x 25mm, 1000 x 500 x 25mm & 1000 x 500 x 50mm (Measure: Length x Width x Thickness)
Our expanded white rigid EPS70 SDN large polystyrene foam sheets (EPS) are soft flexible sheets of foam used to cushion fragile items.
The sheets can also be used with in the building trade as insulation sheets.Our foam sheets have brilliant insulation properties and are unaffected by humidity or cold tempreatures.
White in colour and rectangular shaped foam sheets are designed to provide full coverage to items.
Very easy to cut down to any size these sheets create no excess mess when being used and offer a hygienic alternative to other packaging materials.

Protective White Rigid EPS70 SDN Expanded Polystyrene (EPS) Insulation Void Fill Protective Foam Sheets (20 Sheets, 1000 x 500 x 25mm)

Why we love it

Versatile foam sheet size options.
Excellent insulation and humidity resistance.
Easy to cut, no mess.

Main Highlights

Size/Dimensions: 600 x 400 x 10mm, 600 x 400 x 25mm, 1000 x 500 x 25mm & 1000 x 500 x 50mm (Measure: Length x Width x Thickness)
Our expanded white rigid EPS70 SDN large polystyrene foam sheets (EPS) are soft flexible sheets of foam used to cushion fragile items.
The sheets can also be used with in the building trade as insulation sheets.Our foam sheets have brilliant insulation properties and are unaffected by humidity or cold tempreatures.
White in colour and rectangular shaped foam sheets are designed to provide full coverage to items.
Very easy to cut down to any size these sheets create no excess mess when being used and offer a hygienic alternative to other packaging materials.

XPS Foam Insulation Boards 1200 x 600 x 10mm - Electric and Water Underfloor Heating Tile Laminate Underlay Thermal Extruded Polystyrene Insulation Sheets (10, 1200 x 600 x 10mm)

XPS Foam Insulation Boards 1200 x 600 x 10mm - Electric and Water Underfloor Heating Tile Laminate Underlay Thermal Extruded Polystyrene Insulation Sheets (10, 1200 x 600 x 10mm)

Cosyspace

Why we love it

Highly efficient insulation for underfloor heating.
Light, dense and cost-effective solution.
Water-resistant, anti-aging, compressible, and recyclable.

Main Highlights

Best Used With An Underfloor Heating Kit On Concrete Flooring a Low Cost Proxy To Tile Backer Board
High Density, Light Weight And Low Cost Make This Foam Board Ideal In A Poorly Insulated Property
XPS Boards Are An Extruded Polystyrene Insulation Board Made Through A Plastic Extrusion Process
Widely Used In Walls And Loft Insulation, Underfloor Heating, Roof, Wet Room, And Non Moisture Areas
Stable Performance, Anti-ageing, Resistant To Compression, Water Resistant, Lightweight, Recyclable

XPS Foam Insulation Boards 1200 x 600 x 10mm - Electric and Water Underfloor Heating Tile Laminate Underlay Thermal Extruded Polystyrene Insulation Sheets (10, 1200 x 600 x 10mm)

Why we love it

Highly efficient insulation for underfloor heating.
Light, dense and cost-effective solution.
Water-resistant, anti-aging, compressible, and recyclable.

Main Highlights

Best Used With An Underfloor Heating Kit On Concrete Flooring a Low Cost Proxy To Tile Backer Board
High Density, Light Weight And Low Cost Make This Foam Board Ideal In A Poorly Insulated Property
XPS Boards Are An Extruded Polystyrene Insulation Board Made Through A Plastic Extrusion Process
Widely Used In Walls And Loft Insulation, Underfloor Heating, Roof, Wet Room, And Non Moisture Areas
Stable Performance, Anti-ageing, Resistant To Compression, Water Resistant, Lightweight, Recyclable

YBS Essentials Loft Wrap Bubble Foil Insulation Roll | 400mm x 20m, 3.5mm Thickness | DIY 3-in-1 Thermal Reflective Insulation

YBS Essentials Loft Wrap Bubble Foil Insulation Roll | 400mm x 20m, 3.5mm Thickness | DIY 3-in-1 Thermal Reflective Insulation

YBS Insulation

Free Shipping

Why we love it

Quality British-made insulation.
Maintains warmth and coolness.
Controls moisture and condensation.

Main Highlights

🇬🇧 QUALITY INSULATION, BRITISH MADE: Insulation foil roll crafted with pride in the UK by the leading reflective insulation manufacturer YBS Insulation. Size: 400mm x 20m, 3.5mm Thickness
🌟 THERMAL REFLECTIVE INSULATION FOR THERMAL EFFICIENCY: Highly reflective material retains heat, offering warmth in winter and coolness in summer
💧VAPOUR CONTROL LAYER FOR MOISTURE CONTROL: Prevents moisture and reduces risk of condensation, making it ideal for loft insulation applications
🔄 BUBBLE INSULATION ROLL THAT IS VERSATILE & USER-FRIENDLY: A thin, flexible, and lightweight design simplifies installation
🛡️ YEAR-ROUND PROTECTION: Provides robust protection against cold, heat, and UV light while preventing penetrating damp

YBS Essentials Loft Wrap Bubble Foil Insulation Roll | 400mm x 20m, 3.5mm Thickness | DIY 3-in-1 Thermal Reflective Insulation

Free Shipping

Why we love it

Quality British-made insulation.
Maintains warmth and coolness.
Controls moisture and condensation.

Main Highlights

🇬🇧 QUALITY INSULATION, BRITISH MADE: Insulation foil roll crafted with pride in the UK by the leading reflective insulation manufacturer YBS Insulation. Size: 400mm x 20m, 3.5mm Thickness
🌟 THERMAL REFLECTIVE INSULATION FOR THERMAL EFFICIENCY: Highly reflective material retains heat, offering warmth in winter and coolness in summer
💧VAPOUR CONTROL LAYER FOR MOISTURE CONTROL: Prevents moisture and reduces risk of condensation, making it ideal for loft insulation applications
🔄 BUBBLE INSULATION ROLL THAT IS VERSATILE & USER-FRIENDLY: A thin, flexible, and lightweight design simplifies installation
🛡️ YEAR-ROUND PROTECTION: Provides robust protection against cold, heat, and UV light while preventing penetrating damp

50 x POLYSTYRENE EPS Foam Packing Sheets 600x400x10mm

Globe Packaging

Why we love it

Ideal for packing and dispatching.
Easily customizable to size.
Suitable for building trade.

Main Highlights

50 x Expanded 10mm Polystyrene Sheets 600mm x 400mm x 10mm
10mm Thick SDN Polystyrene Sheets - EPS70
The 600x400x10mm sheets are relatively small sheets and great for use with packing / dispatching items in the warehouse, as well as in the building trade. They can easily be cut down to size with a knife or a hot wire.

50 x POLYSTYRENE EPS Foam Packing Sheets 600x400x10mm

Why we love it

Ideal for packing and dispatching.
Easily customizable to size.
Suitable for building trade.

Main Highlights

50 x Expanded 10mm Polystyrene Sheets 600mm x 400mm x 10mm
10mm Thick SDN Polystyrene Sheets - EPS70
The 600x400x10mm sheets are relatively small sheets and great for use with packing / dispatching items in the warehouse, as well as in the building trade. They can easily be cut down to size with a knife or a hot wire.

White Expanded Polystyrene (EPS) Foam Sheets Rigid EPS70 SDN Insulation Sheeting Packing Void Loose Fill Protective Packaging Thick Sheets (600 x 400 x 25mm, 18 Sheets)

STORM TRADING GROUP

Why we love it

Protects fragile items effectively.
Adaptable with easy cutting.
Excellent insulation properties.

Main Highlights

LARGE EPS FOAM SHEETS: Expanded White Polystyrene Foam Sheets (EPS) White Rigid EPS70 SDN Floor Insulation Sheeting - Polystyrene foam sheets are soft and flexible sheets of foam used to cushion fragile items (e.g. glass and ceramics). Our sheets are also used in the building trade.
LARGE FOAM SHEETS: The sheets are white in colour, rectangular shaped and provide full coverage to items. The sheets are non-abrasive and will keep your items free from any unwanted scratches and marks during transit.
EASY TO CUT: All sheets are easy enough to be cut and can be shaped to accommodate different sizes with are tear and wear resistant properties.
GREAT INSULATION: These sheets create no excess mess when being used and offer a hygienic alternative to other packaging materials. They also have brilliant insulation properties and are unaffected by humidity or cold temperatures.
SIZE DIMENSIONS: All sizes listed in MM, you can select: 600 x 400 x 10mm, 600 x 400 x 25mm, 1000 x 500 x 25mm & 1000 x 500 x 50mm (Measure: Length x Width x Thickness)

White Expanded Polystyrene (EPS) Foam Sheets Rigid EPS70 SDN Insulation Sheeting Packing Void Loose Fill Protective Packaging Thick Sheets (600 x 400 x 25mm, 18 Sheets)

Why we love it

Protects fragile items effectively.
Adaptable with easy cutting.
Excellent insulation properties.

Main Highlights

LARGE EPS FOAM SHEETS: Expanded White Polystyrene Foam Sheets (EPS) White Rigid EPS70 SDN Floor Insulation Sheeting - Polystyrene foam sheets are soft and flexible sheets of foam used to cushion fragile items (e.g. glass and ceramics). Our sheets are also used in the building trade.
LARGE FOAM SHEETS: The sheets are white in colour, rectangular shaped and provide full coverage to items. The sheets are non-abrasive and will keep your items free from any unwanted scratches and marks during transit.
EASY TO CUT: All sheets are easy enough to be cut and can be shaped to accommodate different sizes with are tear and wear resistant properties.
GREAT INSULATION: These sheets create no excess mess when being used and offer a hygienic alternative to other packaging materials. They also have brilliant insulation properties and are unaffected by humidity or cold temperatures.
SIZE DIMENSIONS: All sizes listed in MM, you can select: 600 x 400 x 10mm, 600 x 400 x 25mm, 1000 x 500 x 25mm & 1000 x 500 x 50mm (Measure: Length x Width x Thickness)

4 x Erfurt Heatsaver Wall Underliner Wall Insulation Polystyrene Lining 2mmx10M

Erfurt

3% Off

Why we love it

Promotes quick, easy heat saving.
Resists damp and mould formation.
Supports strong, solvent-free adhesive.

Main Highlights

4 x Erfurt Heatsaver Wall Underliner Wall Insulation Polystyrene Lining 2mmx10M
product type: INSULATION
brand: Erfurt

4 x Erfurt Heatsaver Wall Underliner Wall Insulation Polystyrene Lining 2mmx10M

3% Off

Why we love it

Promotes quick, easy heat saving.
Resists damp and mould formation.
Supports strong, solvent-free adhesive.

Main Highlights

4 x Erfurt Heatsaver Wall Underliner Wall Insulation Polystyrene Lining 2mmx10M
product type: INSULATION
brand: Erfurt

Expanded Polystyrene EPS 70 Sheets (600 x 400 x 25mm) - Wall & Floor Insulation Board (BBA Certified) - Box Lining & Packaging - Arts & Craft Foam Blocks HTUK (25)

Expanded Polystyrene EPS 70 Sheets (600 x 400 x 25mm) - Wall & Floor Insulation Board (BBA Certified) - Box Lining & Packaging - Arts & Craft Foam Blocks HTUK (25)

HTUK

Why we love it

Energy-efficient, damp-proof material.
Shock-proof and impact-resistant.
Excellent for various artistic endeavors.

Main Highlights

HTUK Expanded Polystyrene Foam Sheets EPS 70 600 x 400 x 25mm
Pack of 5, 10 Or 25 sheets, please select the quantity you require.
Size: 600mm x 400mm x 25mm (each)
Thermal conductivity: Low (0.038 - 0.030 W/mK)
BBA certified for BS EN 13163:2012 standards
Insulation Board Application: These foam sheets serve as energy-efficient, damp-proof, and odorless insulation material, suitable for thermal insulation purposes. They can be utilized for insulating walls, floors, sheds, or as polystyrene ceiling tiles, meeting BBA certification standards for construction boards.
Protective Packaging Usage: Employed as shock-proof, impact-resistant, and lightweight packing foam, these sheets provide cushioning for delicate items during shipping and storage. They effectively line boxes or separate flat items, such as glass panels, preventing damage and ensuring items remain securely in place.
Arts & Crafts Application: Designed as non-toxic and non-irritant white polystyrene sheets, they are excellent for various artistic endeavors. Whether for 3D model making, sculpting, floral arrangements, dioramas, or school projects, these foam blocks offer easy cutting, carving, sanding, gluing, and painting capabilities.

Expanded Polystyrene EPS 70 Sheets (600 x 400 x 25mm) - Wall & Floor Insulation Board (BBA Certified) - Box Lining & Packaging - Arts & Craft Foam Blocks HTUK (25)

Why we love it

Energy-efficient, damp-proof material.
Shock-proof and impact-resistant.
Excellent for various artistic endeavors.

Main Highlights

HTUK Expanded Polystyrene Foam Sheets EPS 70 600 x 400 x 25mm
Pack of 5, 10 Or 25 sheets, please select the quantity you require.
Size: 600mm x 400mm x 25mm (each)
Thermal conductivity: Low (0.038 - 0.030 W/mK)
BBA certified for BS EN 13163:2012 standards
Insulation Board Application: These foam sheets serve as energy-efficient, damp-proof, and odorless insulation material, suitable for thermal insulation purposes. They can be utilized for insulating walls, floors, sheds, or as polystyrene ceiling tiles, meeting BBA certification standards for construction boards.
Protective Packaging Usage: Employed as shock-proof, impact-resistant, and lightweight packing foam, these sheets provide cushioning for delicate items during shipping and storage. They effectively line boxes or separate flat items, such as glass panels, preventing damage and ensuring items remain securely in place.
Arts & Crafts Application: Designed as non-toxic and non-irritant white polystyrene sheets, they are excellent for various artistic endeavors. Whether for 3D model making, sculpting, floral arrangements, dioramas, or school projects, these foam blocks offer easy cutting, carving, sanding, gluing, and painting capabilities.

10 x White Rigid Polystyrene Foam Sheets 600mm Long x 400mm Wide x 25mm Boards Slabs Thick EPS70 SDN Floor Insulation Sheeting Packing Void Filler

10 x White Rigid Polystyrene Foam Sheets 600mm Long x 400mm Wide x 25mm Boards Slabs Thick EPS70 SDN Floor Insulation Sheeting Packing Void Filler

STORM TRADING GROUP

Why we love it

Strong resilient EPS foam sheets.
Cuts easily for different sizes.
Excellent insulation, unaffected by humidity.

Main Highlights

STRONG EPS FOAM SHEETS: Expanded White Polystyrene Foam Sheets (EPS) White Rigid EPS70 SDN Floor Insulation Sheeting - Polystyrene foam sheets are soft and flexible sheets of foam used to cushion fragile items (e.g. glass and ceramics). Our sheets are also used in the building trade.
CUTS EASILY: All sheets are easy enough to be cut and can be shaped to accommodate different sizes with are tear and wear resistant properties.
GREAT INSULATION: These sheets create no excess mess when being used and offer a hygienic alternative to other packaging materials. They also have brilliant insulation properties and are unaffected by humidity or cold temperatures.
SIZE DIMENSIONS: All sizes listed in MM: 600mm x 400mm x 25mm you will receive 10 polystyrene foam sheets.

10 x White Rigid Polystyrene Foam Sheets 600mm Long x 400mm Wide x 25mm Boards Slabs Thick EPS70 SDN Floor Insulation Sheeting Packing Void Filler

Why we love it

Strong resilient EPS foam sheets.
Cuts easily for different sizes.
Excellent insulation, unaffected by humidity.

Main Highlights

STRONG EPS FOAM SHEETS: Expanded White Polystyrene Foam Sheets (EPS) White Rigid EPS70 SDN Floor Insulation Sheeting - Polystyrene foam sheets are soft and flexible sheets of foam used to cushion fragile items (e.g. glass and ceramics). Our sheets are also used in the building trade.
CUTS EASILY: All sheets are easy enough to be cut and can be shaped to accommodate different sizes with are tear and wear resistant properties.
GREAT INSULATION: These sheets create no excess mess when being used and offer a hygienic alternative to other packaging materials. They also have brilliant insulation properties and are unaffected by humidity or cold temperatures.
SIZE DIMENSIONS: All sizes listed in MM: 600mm x 400mm x 25mm you will receive 10 polystyrene foam sheets.

Triplast Expanded Polystyrene Foam Sheets EPS 70 (10 Sheets, 600 x 400 x 25mm Each) - BBA Certified Wall & Floor Insulation Board - Box Lining & Packaging Foam Board - White Blocks for DIY Projects

Triplast Expanded Polystyrene Foam Sheets EPS 70 (10 Sheets, 600 x 400 x 25mm Each) - BBA Certified Wall & Floor Insulation Board - Box Lining & Packaging Foam Board - White Blocks for DIY Projects

Triplast

Why we love it

Energy-efficient and versatile insulation.
Shock-proof protective packaging material.
Ideal for arts and crafts.

Main Highlights

CONTENTS: 10 x Polystyrene Sheets | SIZE: Each square-edged sheet measures 600mm (Length) x 400mm (Width) x 25mm (Height) | TYPE: EPS 70 | THERMAL CONDUCTIVITY: Low (0.038 - 0.030 W/mK) | BBA CERTIFIED for BS EN 13163:2012 | MADE in UK
USE #1 - INSULATION BOARD: Energy-efficient, damp-proof & odourless insulation foam for thermal insulation. Use for wall & floor insulation, shed insulation or as polystyrene ceiling tiles - these are BBA certified construction boards!
USE #2 - PROTECTIVE PACKAGING: Shock-proof, impact-resistant & lightweight packing foam sheet for cushioning fragile items, box lining or interleaving flat items (e.g. glass panels) - prevent damage & keep items in place during shipping & storage!
USE #3 - ARTS & CRAFT: Non-toxic & non-irritant, these white polystyrene sheet are perfect for 3D model making, sculpting, floral arrangements, diorama, DIY hobby & school projects - cut, carve, sand, glue & paint this foam block with ease!
AN ECO-CONSCIOUS CHOICE: Made with no HCF's, CFC's or HCFC's, these EPS foam sheets have a zero Global Warming Potential (GWP) & low O-Zone Depletion Potential (ODP) - go sustainable with our BRE Green Guide A+ Rating certified expanded foam boards!

Triplast Expanded Polystyrene Foam Sheets EPS 70 (10 Sheets, 600 x 400 x 25mm Each) - BBA Certified Wall & Floor Insulation Board - Box Lining & Packaging Foam Board - White Blocks for DIY Projects

Why we love it

Energy-efficient and versatile insulation.
Shock-proof protective packaging material.
Ideal for arts and crafts.

Main Highlights

CONTENTS: 10 x Polystyrene Sheets | SIZE: Each square-edged sheet measures 600mm (Length) x 400mm (Width) x 25mm (Height) | TYPE: EPS 70 | THERMAL CONDUCTIVITY: Low (0.038 - 0.030 W/mK) | BBA CERTIFIED for BS EN 13163:2012 | MADE in UK
USE #1 - INSULATION BOARD: Energy-efficient, damp-proof & odourless insulation foam for thermal insulation. Use for wall & floor insulation, shed insulation or as polystyrene ceiling tiles - these are BBA certified construction boards!
USE #2 - PROTECTIVE PACKAGING: Shock-proof, impact-resistant & lightweight packing foam sheet for cushioning fragile items, box lining or interleaving flat items (e.g. glass panels) - prevent damage & keep items in place during shipping & storage!
USE #3 - ARTS & CRAFT: Non-toxic & non-irritant, these white polystyrene sheet are perfect for 3D model making, sculpting, floral arrangements, diorama, DIY hobby & school projects - cut, carve, sand, glue & paint this foam block with ease!
AN ECO-CONSCIOUS CHOICE: Made with no HCF's, CFC's or HCFC's, these EPS foam sheets have a zero Global Warming Potential (GWP) & low O-Zone Depletion Potential (ODP) - go sustainable with our BRE Green Guide A+ Rating certified expanded foam boards!

We scanned 1323 products

We reviewed these offers relevant to the Polystyrene Insulation within online retailers such as Amazon, eBay and other local retailers, ensuring we covered all major brands and models. The products we selected come from trusted brands like Triplast, Pluto Packaging, Cosyspace, YBS Insulation, Globe Packaging, STORM TRADING GROUP, Erfurt, HTUK, all of which have a reputation for consistently delivering high-quality products that users love and innovative approaches for function & design.

For the best Polystyrene Insulation in the market, we considered we took a deep dive into 6616 online reviews , focusing on elements like user satisfaction, performance in real-world conditions, and long-term reliability. Our ranking also evaluates each review’s relevancy, authenticity, up-to-dateness and depth so that the comparison is more sound.

We concluded that:

The clear winner of our analysis is Triplast Expanded Polystyrene Foam Sheets EPS 70 (12 Sheets, 1200 x 600 x 25mm Each) - BBA Certified Wall & Floor Insulation Board - Box Lining & Packaging Foam Board - White Blocks for DIY Projects. We love many things about this product by Triplast. What sets it apart from the competition is Energy-efficient and eco-friendly, Shock-proof and lightweight, Non-toxic and versatile.
The best value product for most shoppers and where user satisfaction is continuously the highest is Protective White Rigid EPS70 SDN Expanded Polystyrene (EPS) Insulation Void Fill Protective Foam Sheets (20 Sheets, 1000 x 500 x 25mm) by Pluto Packaging based on online reviews by bloggers, experts and online shoppers.
The biggest bargain at the moment for Polystyrene Insulation and the best cost-to-value ratio is 4 x Erfurt Heatsaver Wall Underliner Wall Insulation Polystyrene Lining 2mmx10Mat Erfurt with a 3% discount.
Our list of the best Polystyrene Insulation is updated regularly to reflect new releases and changes in product availability, so be sure to check back often for the latest rankings and discounts.