SKU: 59203662731

Celotex CW4000 Cavity Wall Insulation Board

$636.98 $707.75
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USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 24 - Jul 29

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Description

Celotex CW4000 Cavity Wall Insulation BoardCelotex CW4000 Cavity Wall Insulation Board Celotex CW4000 Cavity Wall Insulation Board is a great choice when it comes to insulating and heating your building project. As insulation is a core feature of any new build, Celotex CW4000 Cavity Wall Insulation Board offers an affordable choice when looking for insulation to reduce heat loss in buildings. BSO offers Celotex CW4000 Cavity Wall Insulation Board in three different sizes; 50mm thickness, 75mm

Celotex CW4000 Cavity Wall Insulation Board

Celotex CW4000 Cavity Wall Insulation Board is a great choice when it comes to insulating and heating your building project. As insulation is a core feature of any new build, Celotex CW4000 Cavity Wall Insulation Board offers an affordable choice when looking for insulation to reduce heat loss in buildings.

BSO offers Celotex CW4000 Cavity Wall Insulation Board in three different sizes; 50mm thickness, 75mm thickness, and 100mm thickness meaning that you can find the right sized product to fit into your build. By using the cavity wall insulation board, you can significantly reduce the cost of heating the space within the building, meaning it will provide long term energy savings when considering the maintenance of the building.

Our Celotex CW4000 Cavity Wall Insulation Board is a great choice of product, with good quality and conveniently sized boards, so installation of the product is easily achieved.

Celotex CW4000 cavity wall insulation has the following features

  • Is easy to fit between wall ties using cavity tie clips for retention
  • Board size 1200mm X 450mm
  • Comes in thicknesses ranging from 25mm-100mm
  • Features a good reaction to fire performance when measured in accordance with new European standards
  • Comes in conveniently sized boards for installation between cavity wall ties
  • Includes low emissivity foil facings giving improved thermal insulation with cavity air spaces
  • Has excellent dimensional stability
  • Provides reliable long term energy savings for buildings

Where can it be used?

Celotex CW4000 is used in partial fill cavity walls.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 59203662731

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4.8 ★★★★★
Based on 29 reviews
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Johanna Duska
Whiting, US
★★★★★ 5
Perfect Lightweight Sheets for Sensitive Hot sleepers
Color: Cream, Size: Queen
These sheets are soft, thin, and absolutely perfect for me. I have advanced CRPS and erythromelalgia, so I deal with severe nerve burning and heat sensitivity and cannot tolerate being overheated at all. I keep our AC between 56–64 degrees constantly, and since our studio is small, it usually stays around 61–63. These sheets have been a lifesaver for sleep. They are lightweight, breathable, and don’t trap heat, which helps me avoid extreme flare-ups and the intense burning pain I deal with. I'm bedridden so I need to be comfortable. They feel comfortable against my skin and don’t worsen my symptoms when I’m already in a lot of pain and look nice, wash nicely. For the price, they are also a great value. I’m genuinely grateful to have found something that helps me rest more comfortably. Will be buying more for us and gifts.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 24, 2026
Y
Verified Purchase
Yudelkys del Toro
Battle Creek, US
★★★★★ 5
Sheet set
Color: Burgundy, Size: Queen
This lightweight microfiber sheet set stands out for its softness, comfort, and elegant design. Its fabric feels cool to the touch, withstands daily use, and is easy to wash, retaining its vibrant color wash after wash. It is an excellent choice for adding a cozy and sophisticated touch to the bedroom at an affordable price.
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Reviewed in the United States on May 22, 2026
A
Verified Purchase
ashlee
Lexington, US
★★★★★ 5
Great set of sheets
Color: Blue Pinstripe, Size: Twin
These microfiber sheets are incredibly soft and comfortable, especially for the price. I purchased the blue and white set for my daughter’s bed, and she loves them. The colors are bright and exactly as pictured. They fit the mattress well, don’t slip off the corners, and wash up nicely without pilling or fading. The brushed microfiber feels cozy and lightweight, making them great for year-round use. Overall, a great value and I would definitely buy another set.
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Reviewed in the United States on May 29, 2026
C
Verified Purchase
Chansis Crpz
Bozeman, US
★★★★★ 5
Bold Colors, Great Quality, and an Amazing Price - Perfect Everyday Sheets
Color: Black, Size: Full
The Amazon Basics lightweight bed sheets have been such a great buy for my boys’ bedrooms. They come in a wide variety of colors, which made it easy to match each room’s style — and the colors stay bold and vibrant even after multiple washes, which honestly surprised me. The quality is excellent for the price. The fabric stays soft, doesn’t pill, and holds up well to frequent washing (a must in kids’ rooms!). Each set includes a fitted sheet, flat sheet, and two pillow shams, which makes the value even better — most sets at this price point don’t include that many pieces. Overall, these sheets are affordable, durable, colorful, and comfortable. I loved them enough to buy them in multiple colors, and they’ve held up beautifully. A fantastic budget-friendly choice for any household.
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Reviewed in the United States on May 31, 2026
Y
Verified Purchase
Yamilet Suárez
Carnegie, US
★★★★★ 5
Soft and Comfortable Sheets for Everyday Use
Color: Frosted Lavender, Size: Twin, Color: Frosted Lavender, Size: Twin
I really like these sheets. They are soft, lightweight, and fit my twin mattress perfectly. The lavender color looks beautiful in person and they feel comfortable to sleep on. After washing, they still looked nice and didn’t wrinkle much. Great quality for the price!
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Reviewed in the United States on May 21, 2026

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