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50mm Celotex CW4050 Cavity Wall Insulation 1200x450mm (Pack of 11) (5.94m2)
Price: Per Pack
Product code: 05022
Celotex CW4050 is a cavity wall PIR board for use within a partial fill cavity wall, they have a thermal conductivity of 0.022 W/mK. The boards have a low emissivity foil facing on both sides giving improved thermal insulation performance in a sealed cavity air space.

Standard Delivery
3-5 Days
Celotex CW4050 is a cavity wall PIR board for use within a partial fill cavity wall, they have a thermal conductivity of 0.022 W/mK. The boards have a low emissivity foil facing on both sides giving improved thermal insulation performance in a sealed cavity air space.

Standard Delivery
3-5 Days
| Celotex CW4050 is a cavity wall PIR board for use within a partial fill cavity wall, they have a thermal conductivity of 0.022 W/mK. The boards have a low emissivity foil facing on both sides giving improved thermal insulation performance in a sealed cavity air space. Suitable for new builds and extensions. Celotex CW cavity boards have a superior thermal value when compared to standard glass mineral wool slabs. The boards conveniently fit between cavity wall ties and retaining discs are used to offer retention. Manufactured from a rigid polyisocyanurate (PIR) that uses a blowing agent with a low global warming potential (GWP) and zero ozone depletion potential (zero ODP). Achieves and A rating when compared to the BRE Green Guide. Installation of Celotex insulation boards provide reliable long-term energy savings for buildings. Celotex was founded in the early 1920’s and today is one of the global leaders in insulation products. Celotex are part of the Saint-Gobain group which have a manufacturing presence in 72 countries worldwide. Applications of 50mm Celotex CW4050 Cavity Wall Insulation 1200x450mm
Features & Benefits: 50mm Celotex CW4050 Cavity Wall Insulation 1200x450mm
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| Standards & Certifications BBA Approved (Cert no 16/5343) for partial fill cavity walls, when installed, used and maintained as set out in the certification. Please visit insulation-uk.com/BBA to read the full certification for details and restrictions. CE Marked (18.DOPCW4000-01) to BS EN 13165. Please note: Depending on the delivery area, we may offer a like-for-like substitute PIR Insulation Board. This may be one of the following:
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Delivery Information & Instructions
Delivery charges are included in the final shopping basket and apply to mainland UK, excluding the Islands, Scottish Highlands, and specific postcodes: AB, BT, DD, GY, HS, IM, IV, JE, KA, KW, LD, LL, PA, PH, PL, PO, SA, SY, TR, ZE. Additional charges may apply for these areas. Please contact us before placing your order if your delivery postcode falls in these areas.
To ensure smooth deliveries, please provide detailed information about your site when placing your order. This will help us plan delivery routes effectively.
Key Points to Note:
- Road Access:Inform us of any restrictions (narrow roads, low bridges, weight limits) that might prevent a 26-tonne lorry from entering.
- Moffett Requirements:If a Moffett is needed for offloading, let us know in advance so we can make the necessary arrangements.
- Site Obstacles or Restrictions:Notify us of any on-site obstacles (height restrictions, overhead wires, tight turning spaces) to aid our drivers in planning their approach.
Delivery Time and Order Confirmation
At Insulation Point, we strive to keep you informed throughout the order and delivery process. Here’s what you can expect:
- Order Confirmation: After placing an order, you’ll receive a confirmation email with details of your purchase. Review this to ensure accuracy.
- Processing Time: Orders are processed within 1-2 working days, depending on product availability and other factors.
- Delivery Email: You’ll receive an email confirming delivery detail within 1-2 working days after processing, including an estimated delivery date.
- Lead Time: Deliveries to mainland UK typically take 3-5 working days. Kingspan products may take 5-7 working days.
- Manufacturer Availability: Delivery schedules may vary. If changes or delays occur, we’ll notify you via email or phone.
- Product Availability and Alternatives: If a product is unavailable, we’ll inform you and suggest suitable alternatives.
- Delivery Time Window: Specific delivery times cannot be provided, but we’ll aim to deliver on the scheduled date.
- Delivery Tracking: Tracking is not available, but you’ll receive email updates on your order status.
- Failed Deliveries and Re-delivery Charges: Ensure someone is available to receive the delivery. Re-delivery charges may apply if delivery fails due to unavailability or inaccurate details.
- Booking Tradespersons/Builders: Schedule tradespersons/builders only after your items have arrived to avoid conflicts or charges.
- Email Communication: Check your junk/spam folders if you don’t see our emails. Contact our team for any assistance.
For more in-depth delivery information, please refer to our delivery policy page.








Miriam Schwartz –
“Good thermal effect.”
Tariq Hassan –
“Definitely recommend.”
Paola Ricci –
“Boards are straight, very clean cut.”
Lucy Brown –
“Warm in winter, cool in summer.”
Tiago Silva –
“Very happy, makes house warmer.”
Ingrid Svensson –
“Boards arrived well, good foil finish.”
Javier Morales –
“Warm walls, no condensation issues.”
Laura Hill –
“Good insulation and boards are firm.”
Oliver Brown –
“Value pack, performance is excellent.”
Lian Chen –
“Boards arrived intact, no warpage.”
Denise Lee –
“Good coverage, good resistance to cold walls.”
Jorge González –
“Foil facing looks quality, delivers.”
Heather Mills –
“Warmth noticeable within hours.”
Jack O’Brien –
“Good firm boards, solid insulation.”
Isla Wilson –
“No gaps, good fit, very pleased.”
Zhen Huang –
“Substantial difference once installed.”
Mia Clarke –
“Quality boards and foil facing feels solid.”
Noah Adams –
“Great cavity board, good coverage per pack.”