i want to use this polystyrene for damp walls in my garage.What adhesive do you use?

There are plenty of glues specifically designed for polystyrene (just put polystyrene glue into Amazon search) but if you have big areas which you sound as if you have then a standard PVA is probably the best solution and relatively cheap. This does not dissolve the polystyrene

Is there a SDS to go with these or can amyone tell me the thermal conductivity of these?

As I understand it the thermal conductivity is zero, which is of course why I purchased them in the first place.

Is this product completely white in colour or does it have darker/ black speckles through it?

Had 24 sheets, 3 or 4 had black bits but only a few on 1 side.

how many of these panels would I need for an average detached house?

Cannot really help. I bought 12 sheets to insulate my concrete garage measuring 22ftX12.5ft and had 2 sheets left over. No idea what your house would need. Sorry!

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12 x EXPANDED 2" POLYSTYRENE Foam Sheets 2400x1200x50mm

Product ID: 55133789

Details

Brand
Globe
Item thickness
50.8
Material
Polystyrene
Product dimensions
2.4L x 1.2W
Recommended uses for product
thermal sound

📏2.4m x 1.2m large sheets

🧱50mm thick high-density EPS70 foam

❄️Superior thermal & sound insulation

€ 945.99

Duties & taxes included

In stock

Sold byAmazon NetherlandsDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

❄️ Insulate smarter, live cooler — don’t let your space miss out!

TRUSTED QUALITY - Made in the UK with 4.7-star customer satisfaction and proven performance
SPACIOUS COVERAGE - Each sheet covers 2.88m² for fast, seamless installation
VERSATILE PROTECTION - Ideal for floor, joist, concrete slab insulation & secure packaging
DURABLE LIGHTWEIGHT - High-density EPS70 foam offers robust strength without the bulk
MAXIMIZE ENERGY EFFICIENCY - Thick 50mm polystyrene sheets lock in temperature and cut energy costs

This pack of 12 expanded polystyrene foam sheets measures 2400x1200x50mm each, crafted from high-density EPS70 material. Designed for thermal, sound, and moisture insulation, these lightweight yet durable sheets provide 2.88 square meters of coverage per panel, perfect for floor joists, concrete slabs, and protective packaging. Manufactured in the UK, they combine proven quality with versatile applications, backed by excellent customer reviews.

Specifications

ASIN	B007BFG69G
Best Sellers Rank	458,113 in Stationery & Office Supplies ( See Top 100 in Stationery & Office Supplies ) 403 in Foam Boards
Brand	Globe Packaging
Country of Origin	United Kingdom
Coverage	2.88 square meters
Customer Reviews	4.7 4.7 out of 5 stars (66)
Item Dimensions L x W	2.4L x 1.2W metres
Item Thickness	50.8 Millimetres
Manufacturer	Globe Packaging
Material	Polystyrene
Number of Items	12
Number of Packs	1
Recommended Uses For Product	thermal insulation, sound insulation, moisture protection
Unit Count	12.0 count

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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TrustScore 4.5 | 7,300+ reviews

Anjali K.

The product quality is outstanding. Exactly what I needed for my work.

1 month ago

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Great price for an authentic product. Fast international shipping too!

3 weeks ago

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